List of Edited Articles

@article{nokey,

title = {Photo-induced stress relaxation in reconfigurable disulfide-crosslinked supramolecular films visualized by dynamic wrinkling},

author = {Shuzhen Yan and Kaiming Hu and Shuai Chen and Tiantian Li and Wenming Zhang and Jie Yin and Xuesong Jiang },

url = {https://www.nature.com/articles/s41467-022-35271-9.pdf},

doi = {10.1038/s41467-022-35271-9},

year  = {2022},

date = {2022-12-02},

journal = {Nature Communications},

volume = {13},

number = {7434},

abstract = {Stress relaxation in reconfigurable supramolecular polymer networks is strongly related to intermolecular behavior. However, the relationship between molecular motion and macroscopic mechanics is usually vague, and the visualization of internal stress reflecting precise regulation of molecules remains challenging. Here, we present a strategy for visualizing photo-driven stress relaxation induced by infinitesimal perturbations in the intermolecular exchange reaction via reprogrammable wrinkle patterns. The supramolecular films exhibit visible changes in microscopic wrinkle topography through ultraviolet (UV)-induced dynamic disulfide exchange reaction. In accordance with the trans-scale theoretical models, which quantitatively evaluate the chemical-dependent mechanical stresses in the supramolecular network, the unexposed disordered wrinkles evolved into highly oriented patterns and underwent subsequent mutations after thermal treatment. The stress-sensitive wrinkle macro-patterns can be repetitively written/erased through network topology rearrangement using different stimuli. This strategy provides an approach for visualizing and understanding the molecular behavior from dynamic chemistry to mechanical changes, and directly programming wrinkle patterns with regulated structures.},

note = {The mechanics of reconfigurable supramolecular polymer networks are governed by their dynamic crosslinking chemistry and the resulting stress relaxations. Here, the authors use reversible wrinkling patterns to visualize localized stress relaxations, due to molecular network rearrangements.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Chiral nanocrystals grown from MoS2 nanosheets enable photothermally modulated enantioselective release of antimicrobial drugs},

author = {Bang Lin Li and Jun Jiang Luo and Hao Lin Zou and Qing-Meng Zhang and Liu-Bin Zhao and Hang Qian and Hong Qun Luo and David Tai Leong and Nian Bing Li },

url = {https://www.nature.com/articles/s41467-022-35016-8.pdf},

doi = {10.1038/s41467-022-35016-8},

year  = {2022},

date = {2022-11-26},

journal = {Nature Communications},

volume = {13},

number = {7289},

abstract = {The transfer of the concept of chirality from molecules to synthesized nanomaterials has attracted attention amongst multidisciplinary teams. Here we demonstrate heterogeneous nucleation and anisotropic accumulation of Au nanoparticles on multilayer MoS2 planes to form chiroptically functional nanomaterials. Thiol amino acids with chiral conformations modulate asymmetric growth of gold nanoarchitectures on seeds of highly faceted Au/MoS2 heterostructures. Consequently, dendritic plasmonic nanocrystals with partial chiral morphologies are synthesized. The chirality of dendritic nanocrystals inherited from cysteine molecules refers to the structural characteristics and includes specific recognition of enantiomeric molecules. With integration of the intrinsic photothermal properties and inherited enantioselective characteristics, dendritic Au/MoS2 heterostructures exhibit chirality-dependent release of antimicrobial drugs from hydrogel substrates when activated by exogenous infrared irradiation. A three-in-one strategy involving synthesis of chiral dendritic heterostructures, enantioselective recognition, and controlled drug release system is presented, which improves nanomaterial synthetic technology and enhances our understanding of crucial chirality information.},

note = {Chirality transfer from molecules to nanomaterials enables advanced optical functionalities. Here, the authors use exfoliated MoS2 nanosheets to seed the growth of chiral Au nanoparticles to form Au/MoS2 heterostructures for enantioselective drug release.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Arginine-modified black phosphorus quantum dots with dual excited states for enhanced electrochemiluminescence in bioanalysis},

author = {Siqi Yu and Yu Du and Xianghong Niu and Guangming Li and Da Zhu and Qian Yu and Guizheng Zou and Huangxian Ju},

url = {https://www.nature.com/articles/s41467-022-35015-9.pdf},

doi = {10.1038/s41467-022-35015-9},

year  = {2022},

date = {2022-11-26},

journal = {Nature Communications},

volume = {13},

number = {7302},

abstract = {The electrochemiluminescence (ECL) is generally emitted via radiative transition of singlet or triplet excited state (S1 or T1). Herein, an ECL mechanism with the transitions of both S1 and T1 of black phosphorus quantum dots (BPQDs) is found, and an arginine (Arg) modification strategy is proposed to passivate the surface oxidation defects of BPQDs, which could modulate the excited states for enhancing the ECL efficiency of BPQDs. The Arg modification leads to greater spatial overlap of highest and lowest occupied molecular orbitals, and spectral shift of radiative transitions, and improves the stability of anion radical of BPQDs. To verify the application of the proposed mechanism, it is used to construct a sensitive method for conveniently evaluating the inhibiting efficiency of cyclo-arginine-glycine-aspartic acid-d-tyrosine-lysine to cell surface integrin by using Arg containing peptide modified BPQDs as signal tag. The dual excited states mediated ECL emitters provide a paradigm for adjustable ECL generation and extend the application of ECL analysis.},

note = {Electrochemiluminescence is emitted via the radiative transition of a singlet or triplet excited state. Here, the authors propose an arginine modification of black phosphorus quantum dots that exhibits enhanced emission based on dual excited states.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {A charged diatomic triple-bonded U≡N species trapped in C82 fullerene cages},

author = {Qingyu Meng and Laura Abella and Yang-Rong Yao and Dumitru-Claudiu Sergentu and Wei Yang and Xinye Liu and Jiaxin Zhuang and Luis Echegoyen and Jochen Autschbach and Ning Chen },

url = {https://www.nature.com/articles/s41467-022-34651-5.pdf},

doi = {10.1038/s41467-022-34651-5},

year  = {2022},

date = {2022-11-23},

journal = {Nature Communications},

volume = {13},

number = {7192},

abstract = {Actinide diatomic molecules are ideal models to study elusive actinide multiple bonds, but most of these diatomic molecules have so far only been studied in solid inert gas matrices. Herein, we report a charged U≡N diatomic species captured in fullerene cages and stabilized by the U-fullerene coordination interaction. Two diatomic clusterfullerenes, viz. UN@Cs(6)-C82 and UN@C2(5)-C82, were successfully synthesized and characterized. Crystallographic analysis reveals U-N bond lengths of 1.760(7) and 1.760(20) Å in UN@Cs(6)-C82 and UN@C2(5)-C82. Moreover, U≡N was found to be immobilized and coordinated to the fullerene cages at 100 K but it rotates inside the cage at 273 K. Quantum-chemical calculations show a (UN)2+@(C82)2− electronic structure with formal +5 oxidation state (f1) of U and unambiguously demonstrate the presence of a U≡N bond in the clusterfullerenes. This study constitutes an approach to stabilize fundamentally important actinide multiply bonded species.},

note = {Diatomic actinide molecules are ideal models for studying rare multiple-bond motifs. Here, the authors report host-guest structures of metastable charged U≡N diatoms confined in fullerene cages and stabilized by coordinative electron transfer.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Covalent transfer of chemical gradients onto a graphenic surface with 2D and 3D control},

author = {Yuanzhi Xia and Semih Sevim and João Pedro Vale and Johannes Seibel and David Rodríguez-San-Miguel and Donghoon Kim and Salvador Pané and Tiago Sotto Mayor and Steven De Feyter and Josep Puigmartí-Luis },

url = {https://www.nature.com/articles/s41467-022-34684-w.pdf},

doi = {10.1038/s41467-022-34684-w},

year  = {2022},

date = {2022-11-16},

journal = {Nature Communications},

volume = {13},

number = {7006},

abstract = {Control over the functionalization of graphenic materials is key to enable their full application in electronic and optical technologies. Covalent functionalization strategies have been proposed as an approach to tailor the interfaces’ structure and properties. However, to date, none of the proposed methods allow for a covalent functionalization with control over the grafting density, layer thickness and/or morphology, which are key aspects for fine-tuning the processability and performance of graphenic materials. Here, we show that the no-slip boundary condition at the walls of a continuous flow microfluidic device offers a way to generate controlled chemical gradients onto a graphenic material with 2D and 3D control, a possibility that will allow the sophisticated functionalization of these technologically-relevant materials.},

note = {Covalent modification is an essential chemical method for altering the physicochemical properties of material interfaces. Here, the authors show that the no-slip conditions in microfluidic devices grant spatiotemporal control over molecular grafting.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Electrically responsive photonic crystals with bistable states for low-power electrophoretic color displays},

author = {Qianqian Fu and Wenyuan Yu and Guangyang Bao and Jianping Ge },

url = {https://www.nature.com/articles/s41467-022-34745-0.pdf},

doi = {10.1038/s41467-022-34745-0},

year  = {2022},

date = {2022-11-16},

urldate = {2022-11-16},

journal = {Nature Communications},

volume = {13},

number = {7007},

abstract = {Electrically responsive photonic crystals are promising materials for electrophoretic color displays with better brightness and color saturation. However, electric field must always be applied to maintain the specific colors, which brings concerns about the power consumption and signal stability and reversibility. Here, we show an electrically responsive photonic crystal with two stable states at 0 V, which are the colored state or the colorless state with ordered or disordered particle arrangement. The color state can be reversibly switched by applying a short-time electrical field, just like in the case of commercial electrophoretic ink. With optimized recipe and electric field, the photonic crystals encapsulated in the prototype display panel are proved to have potentials in high resolution, multi-color, and greyscale display, which lays down a firm basis for reflective displays with low power consumption and good visibility.},

note = {Conventional electrophoretic color displays require a permanent electric field, increasing power consumption. Here, the authors report an electrically responsive photonic crystal with switchable bistable states by particle rearrangement for low power consumption displays.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Symmetry-breaking in patch formation on triangular gold nanoparticles by asymmetric polymer grafting},

author = {Ahyoung Kim and Thi Vo and Hyosung An and Progna Banerjee and Lehan Yao and Shan Zhou and Chansong Kim and Delia J. Milliron and Sharon C. Glotzer and Qian Chen },

url = {https://www.nature.com/articles/s41467-022-34246-0.pdf},

doi = {10.1038/s41467-022-34246-0},

year  = {2022},

date = {2022-11-09},

journal = {Nature Communications},

volume = {13},

number = {6774},

abstract = {Synthesizing patchy particles with predictive control over patch size, shape, placement and number has been highly sought-after for nanoparticle assembly research, but is fraught with challenges. Here we show that polymers can be designed to selectively adsorb onto nanoparticle surfaces already partially coated by other chains to drive the formation of patchy nanoparticles with broken symmetry. In our model system of triangular gold nanoparticles and polystyrene-b-polyacrylic acid patch, single- and double-patch nanoparticles are produced at high yield. These asymmetric single-patch nanoparticles are shown to assemble into self-limited patch‒patch connected bowties exhibiting intriguing plasmonic properties. To unveil the mechanism of symmetry-breaking patch formation, we develop a theory that accurately predicts our experimental observations at all scales—from patch patterning on nanoparticles, to the size/shape of the patches, to the particle assemblies driven by patch‒patch interactions. Both the experimental strategy and theoretical prediction extend to nanoparticles of other shapes such as octahedra and bipyramids. Our work provides an approach to leverage polymer interactions with nanoscale curved surfaces for asymmetric grafting in nanomaterials engineering.},

note = {Patchy nanoparticles are desirable building blocks for the guided assembly of functional superstructures. Here, the authors demonstrate quantitative control over asymmetric polymer grafting on triangular Au nanoprisms based on polymer scaling theory.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Direct in situ photolithography of perovskite quantum dots based on photocatalysis of lead bromide complexes},

author = {Pingping Zhang and Gaoling Yang and Fei Li and Jianbing Shi and Haizheng Zhong },

url = {https://www.nature.com/articles/s41467-022-34453-9.pdf},

doi = {10.1038/s41467-022-34453-9},

year  = {2022},

date = {2022-11-07},

journal = {Nature Communications},

volume = {13},

number = {6713},

abstract = {Photolithography has shown great potential in patterning solution-processed nanomaterials for integration into advanced optoelectronic devices. However, photolithography of perovskite quantum dots (PQDs) has so far been hindered by the incompatibility of perovskite with traditional optical lithography processes where lots of solvents and high-energy ultraviolet (UV) light exposure are required. Herein, we report a direct in situ photolithography technique to pattern PQDs based on the photopolymerization catalyzed by lead bromide complexes. By combining direct photolithography with in situ fabrication of PQDs, this method allows to directly photolithograph perovskite precursors, avoiding the complicated lift-off processes and the destruction of PQDs by solvents or high-energy UV light, as PQDs are produced after lithography exposure. We further demonstrate that the thiol-ene free-radical photopolymerization is catalyzed by lead bromide complexes in the perovskite precursor solution, while no external initiators or catalysts are needed. Using direct in situ photolithography, PQD patterns with high resolution up to 2450 pixels per inch (PPI), excellent fluorescence uniformity, and good stability, are successfully demonstrated. This work opens an avenue for non-destructive direct photolithography of high-efficiency light-emitting PQDs, and potentially expands their application in various integrated optoelectronic devices.},

note = {Perovskite nanomaterials may suffer degradation during conventional photolithography. Here, the authors report a non-destructive method for patterning perovskite quantum dots based on direct photopolymerization catalyzed by lead bromide complexes.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Atomically precise control of rotational dynamics in charged rare-earth complexes on a metal surface},

author = {Tolulope Michael Ajayi and Vijay Singh and Kyaw Zin Latt and Sanjoy Sarkar and Xinyue Cheng and Sineth Premarathna and Naveen K. Dandu and Shaoze Wang and Fahimeh Movahedifar and Sarah Wieghold and Nozomi Shirato and Volker Rose and Larry A. Curtiss and Anh T. Ngo and Eric Masson and Saw Wai Hla },

url = {https://www.nature.com/articles/s41467-022-33897-3.pdf},

doi = {10.1038/s41467-022-33897-3},

year  = {2022},

date = {2022-10-22},

journal = {Nature Communications},

volume = {13},

number = {6305},

abstract = {Complexes containing rare-earth ions attract great attention for their technological applications ranging from spintronic devices to quantum information science. While charged rare-earth coordination complexes are ubiquitous in solution, they are challenging to form on materials surfaces that would allow investigations for potential solid-state applications. Here we report formation and atomically precise manipulation of rare-earth complexes on a gold surface. Although they are composed of multiple units held together by electrostatic interactions, the entire complex rotates as a single unit when electrical energy is supplied from a scanning tunneling microscope tip. Despite the hexagonal symmetry of the gold surface, a counterion at the side of the complex guides precise three-fold rotations and 100% control of their rotational directions is achieved using a negative electric field from the scanning probe tip. This work demonstrates that counterions can be used to control dynamics of rare-earth complexes on materials surfaces for quantum and nanomechanical applications.},

note = {Rare-earth elements are vital to advanced technological applications ranging from spintronic devices to quantum information science. Here, the authors formed charged rare-earth complexes on a material surface and demonstrated atomically precise control on their rotational dynamics.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Remodeling nanodroplets into hierarchical mesoporous silica nanoreactors with multiple chambers},

author = {Yuzhu Ma and Hongjin Zhang and Runfeng Lin and Yan Ai and Kun Lan and Linlin Duan and Wenyao Chen and Xuezhi Duan and Bing Ma and Changyao Wang and Xiaomin Li and Dongyuan Zhao },

url = {https://www.nature.com/articles/s41467-022-33856-y.pdf},

doi = {10.1038/s41467-022-33856-y},

year  = {2022},

date = {2022-10-17},

urldate = {2022-10-17},

journal = {Nature Communications},

volume = {13},

number = {6136},

abstract = {Multi-chambered architectures have attracted much attention due to the ability to establish multifunctional partitions in different chambers, but manipulating the chamber numbers and coupling multi-functionality within the multi-chambered mesoporous nanoparticle remains a challenge. Herein, we propose a nanodroplet remodeling strategy for the synthesis of hierarchical multi-chambered mesoporous silica nanoparticles with tunable architectures. Typically, the dual-chambered nanoparticles with a high surface area of ~469 m2 g−1 present two interconnected cavities like a calabash. Furthermore, based on this nanodroplet remodeling strategy, multiple species (magnetic, catalytic, optic, etc.) can be separately anchored in different chamber without obvious mutual-crosstalk. We design a dual-chambered mesoporous nanoreactors with spatial isolation of Au and Pd active-sites for the cascade synthesis of 2-phenylindole from 1-nitro-2-(phenylethynyl)benzene. Due to the efficient mass transfer of reactants and intermediates in the dual-chambered structure, the selectivity of the target product reaches to ~76.5%, far exceeding that of single-chambered nanoreactors (~41.3%).},

note = {Multi-chambered structures have attracted great attention due to their ability to create multifunctional partitions in different chambers. Here, the authors prepared mesoporous silica nanoreactors with hierarchical chambers for catalytic cascades.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Selective activation of four quasi-equivalent C–H bonds yields N-doped graphene nanoribbons with partial corannulene motifs},

author = {Yixuan Gao and Li Huang and Yun Cao and Marcus Richter and Jing Qi and Qi Zheng and Huan Yang and Ji Ma and Xiao Chang and Xiaoshuai Fu and Carlos-Andres Palma and Hongliang Lu and Yu-Yang Zhang and Zhihai Cheng and Xiao Lin and Min Ouyang and Xinliang Feng and Shixuan Du and Hong-Jun Gao },

url = {https://www.nature.com/articles/s41467-022-33898-2.pdf},

doi = {10.1038/s41467-022-33898-2},

year  = {2022},

date = {2022-10-17},

urldate = {2022-10-17},

journal = {Nature Communications},

volume = {13},

number = {6146},

abstract = {Selective C–H bond activation is one of the most challenging topics for organic reactions. The difficulties arise not only from the high C–H bond dissociation enthalpies but also the existence of multiple equivalent/quasi-equivalent reaction sites in organic molecules. Here, we successfully achieve the selective activation of four quasi-equivalent C–H bonds in a specially designed nitrogen-containing polycyclic hydrocarbon (N-PH). Density functional theory calculations reveal that the adsorption of N-PH on Ag(100) differentiates the activity of the four ortho C(sp3) atoms in the N-heterocycles into two groups, suggesting a selective dehydrogenation, which is demonstrated by sequential-annealing experiments of N-PH/Ag(100). Further annealing leads to the formation of N-doped graphene nanoribbons with partial corannulene motifs, realized by the C–H bond activation process. Our work provides a route of designing precursor molecules with ortho C(sp3) atom in an N-heterocycle to realize surface-induced selective dehydrogenation in quasi-equivalent sites.},

note = {Selective activation of C–H bonds is a key challenge in organic reactions. Here, the authors achieve the selective activation of four quasi-equivalent C–H bonds, leading to the formation of N-doped graphene nanoribbons with partial corannulene motifs.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Coemissive luminescent nanoparticles combining aggregation-induced emission and quenching dyes prepared in continuous flow},

author = {Chong Li and Qi Liu and Shengyang Tao },

url = {https://www.nature.com/articles/s41467-022-33857-x.pdf},

doi = {10.1038/s41467-022-33857-x},

year  = {2022},

date = {2022-10-13},

urldate = {2022-10-13},

journal = {Nature Communications},

volume = {13},

number = {6034},

abstract = {Achieving an ideal light-harvesting system at a low cost remains a challenge. Herein, we report the synthesis of a hybrid dye system based on tetraphenylene (TPE) encapsulated organic dyes in a continuous flow microreactor. The composite dye nanoparticles (NPs) are synthesized based on supramolecular self-assembly to achieve the co-emission of aggregation-induced emission dyes and aggregation-caused quenching dyes (CEAA). Numerical simulations and molecular spectroscopy were used to investigate the synthesis mechanism of the CEAA dyes. Nanoparticles of CEAA dyes provide a platform for efficient cascade Förster resonance energy transfer (FRET). Composite dye nanoparticles of TPE and Nile red (NiR) are synthesized for an ideal light-harvesting system using coumarin 6 (C-6) as an energy intermediate. The light-harvesting system has a considerable red-shift distance (~126 nm), high energy-transfer efficiency (ΦET) of 99.37%, and an antenna effect of 26.23. Finally, the versatility of the preparation method and the diversity of CEAA dyes are demonstrated.},

note = {Developing efficient light harvesting systems at low cost is a challenge. Here, the authors synthesized coemissive dyes in a continuous flow microreactor featuring a controlled cascade FRET process combining aggregation-induced emission and quenching.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Evidence of exciton-libron coupling in chirally adsorbed single molecules},

author = {Jiří Doležal and Sofia Canola and Prokop Hapala and Rodrigo Cezar de Campos Ferreira and Pablo Merino and Martin Švec },

url = {https://www.nature.com/articles/s41467-022-33653-7.pdf},

doi = {10.1038/s41467-022-33653-7},

year  = {2022},

date = {2022-10-12},

urldate = {2022-10-12},

journal = {Nature Communications},

volume = {13},

number = {6008},

abstract = {Interplay between motion of nuclei and excitations has an important role in molecular photophysics of natural and artificial structures. Here we provide a detailed analysis of coupling between quantized librational modes (librons) and charged excited states (trions) on single phthalocyanine dyes adsorbed on a surface. By means of tip-induced electroluminescence performed with a scanning probe microscope, we identify libronic signatures in spectra of chirally adsorbed phthalocyanines and find that these signatures are absent from spectra of symmetrically adsorbed species. We create a model of the libronic coupling based on the Franck-Condon principle to simulate the spectral features. Experimentally measured librational spectra match very well the theoretically calculated librational eigenenergies and peak intensities (Franck-Condon factors). Moreover, the comparison reveals an unexpected depopulation channel for the zero libron of the excited state that can be effectively controlled by tuning the size of the nanocavity. Our results showcase the possibility of characterizing the dynamics of molecules by their low-energy molecular modes using µeV-resolved tip-enhanced spectroscopy.},

note = {Vibronic coupling in molecules plays an essential role in photophysics. Here, the authors observe optical fingerprints of the coupling between librational states and charged excited states in a single phthalocyanine molecule chirally absorbed on a surface.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Plasmonic high-entropy carbides},

author = {Arrigo Calzolari and Corey Oses and Cormac Toher and Marco Esters and Xiomara Campilongo and Sergei P. Stepanoff and Douglas E. Wolfe and Stefano Curtarolo },

url = {https://www.nature.com/articles/s41467-022-33497-1.pdf},

doi = {10.1038/s41467-022-33497-1},

year  = {2022},

date = {2022-10-11},

urldate = {2022-10-12},

journal = {Nature Communications},

volume = {13},

number = {5993},

abstract = {Discovering multifunctional materials with tunable plasmonic properties, capable of surviving harsh environments is critical for advanced optical and telecommunication applications. We chose high-entropy transition-metal carbides because of their exceptional thermal, chemical stability, and mechanical properties. By integrating computational thermodynamic disorder modeling and time-dependent density functional theory characterization, we discovered a crossover energy in the infrared and visible range, corresponding to a metal-to-dielectric transition, exploitable for plasmonics. It was also found that the optical response of high-entropy carbides can be largely tuned from the near-IR to visible when changing the transition metal components and their concentration. By monitoring the electronic structures, we suggest rules for optimizing optical properties and designing tailored high-entropy ceramics. Experiments performed on the archetype carbide HfTa4C5 yielded plasmonic properties from room temperature to 1500K. Here we propose plasmonic transition-metal high-entropy carbides as a class of multifunctional materials. Their combination of plasmonic activity, high-hardness, and extraordinary thermal stability will result in yet unexplored applications.},

note = {Tunable plasmonic materials capable of surviving harsh environments are critical for advanced applications. Here, the authors report that some high-entropy transition-metal carbides can satisfy the requirements.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Direct strain correlations at the single-atom level in three-dimensional core-shell interface structures},

author = {Hyesung Jo and Dae Han Wi and Taegu Lee and Yongmin Kwon and Chaehwa Jeong and Juhyeok Lee and Hionsuck Baik and Alexander J. Pattison and Wolfgang Theis and Colin Ophus and Peter Ercius, Yea-Lee Lee and Seunghwa Ryu and Sang Woo Han and Yongsoo Yang },

url = {https://www.nature.com/articles/s41467-022-33236-6.pdf},

doi = {10.1038/s41467-022-33236-6},

year  = {2022},

date = {2022-10-10},

journal = {Nature Communications},

volume = {13},

number = {5957},

abstract = {Nanomaterials with core-shell architectures are prominent examples of strain-engineered materials. The lattice mismatch between the core and shell materials can cause strong interface strain, which affects the surface structures. Therefore, surface functional properties such as catalytic activities can be designed by fine-tuning the misfit strain at the interface. To precisely control the core-shell effect, it is essential to understand how the surface and interface strains are related at the atomic scale. Here, we elucidate the surface-interface strain relations by determining the full 3D atomic structure of Pd@Pt core-shell nanoparticles at the single-atom level via atomic electron tomography. Full 3D displacement fields and strain profiles of core-shell nanoparticles were obtained, which revealed a direct correlation between the surface and interface strain. The strain distributions show a strong shape-dependent anisotropy, whose nature was further corroborated by molecular statics simulations. From the observed surface strains, the surface oxygen reduction reaction activities were predicted. These findings give a deep understanding of structure-property relationships in strain-engineerable core-shell systems, which can lead to direct control over the resulting catalytic properties.},

note = {Understanding 3D interfacial strain at the atomic level has been a long-sought challenge in the field of core-shell nanomaterials. Here, the authors address this challenge by revealing the full 3D atomic structures of Pd@Pt core-shell nanoparticles.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Assembly-induced spin transfer and distance-dependent spin coupling in atomically precise AgCu nanoclusters},

author = {Nan Xia and Jianpei Xing and Di Peng and Shiyu Ji and Jun Zha and Nan Yan and Yan Su and Xue Jiang and Zhi Zeng and Jijun Zhao and Zhikun Wu 

},

url = {https://www.nature.com/articles/s41467-022-33651-9.pdf},

doi = {10.1038/s41467-022-33651-9},

year  = {2022},

date = {2022-10-08},

journal = {Nature Communications},

volume = {13},

number = {5934},

abstract = {Nanoparticle assembly paves the way for unanticipated properties and applications from the nanoscale to the macroscopic world. However, the study of such material systems is greatly inhibited due to the obscure compositions and structures of nanoparticles (especially the surface structures). The assembly of atomically precise nanoparticles is challenging, and such an assembly of nanoparticles with metal core sizes strictly larger than 1 nm has not been achieved yet. Here, we introduced an on-site synthesis-and-assembly strategy, and successfully obtained a straight-chain assembly structure consisting of Ag77Cu22(CHT)48 (CHT: cyclohexanethiolate) nanoparticles with two nanoparticles separated by one S atom, as revealed by mass spectrometry and single crystal X-ray crystallography. Although Ag77Cu22(CHT)48 bears one unpaired shell-closing electron, the magnetic moment is found to be mainly localized at the S linker with magnetic isotropy, and the sulfur radicals were experimentally verified and found to be unstable after disassembly, demonstrating assembly-induced spin transfer. Besides, spin nanoparticles are found to couple and lose their paramagnetism at sufficiently short inter-nanoparticle distance, namely, the spin coupling depends on the inter-nanoparticle distance. However, it is not found that the spin coupling leads to the nanoparticle growth.},

note = {The assembly of atomically precise clusters into ordered superstructures enables new functional material designs. Here, the authors propose a strategy for linear arrangements of AgCu clusters and explore the consequent transfer and coupling of magnetic spins.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Chiral superstructures of inorganic nanorods by macroscopic mechanical grinding},

author = {Zhiwei Yang and Yanze Wei and Jingjing Wei and Zhijie Yang },

url = {https://www.nature.com/articles/s41467-022-33638-6.pdf},

doi = {10.1038/s41467-022-33638-6},

year  = {2022},

date = {2022-10-04},

urldate = {2022-10-04},

journal = {Nature Communications},

volume = {13},

number = {5844},

abstract = {The development of mechanochemistry substantially expands the traditional synthetic realm at the molecular level. Here, we extend the concept of mechanochemistry from atomic/molecular solids to the nanoparticle solids, and show how the macroscopic grinding is being capable of generating chirality in self-assembled nanorod (NR) assemblies. Specifically, the weak van der Waals interaction is dominated in self-assembled NR assemblies when their surface is coated with aliphatic chains, which can be overwhelmed by a press-and-rotate mechanic force macroscopically. The chiral sign of the NR assemblies can be well-controlled by the rotating directions, where the clockwise and counter-clockwise rotation leads to the positive and negative Cotton effect in circular dichroism and circularly polarized luminescence spectra, respectively. Importantly, we show that the present approach can be applied to NRs of diverse inorganic materials, including CdSe, CdSe/CdS, and TiO2. Equally important, the as-prepared chiral NR assemblies could be served as porous yet robust chiral substrates, which enable to host other molecular materials and induce the chirality transfer from substrate to the molecular system.},

note = {Chiroptic materials made of self-assembled nanomaterials are essential for advanced optical applications. Here, the authors show that macroscopic grinding can break the symmetry in achiral superlattices of inorganic nanorods, generating chiral superstructures.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Evolution of Br⋯Br contacts in enantioselective molecular recognition during chiral 2D crystallization},

author = {Zhen-Yu Yi and Xue-Qing Yang and Jun-Jie Duan and Xiong Zhou and Ting Chen and Dong Wang and Li-Jun Wan },

url = {https://www.nature.com/articles/s41467-022-33446-y.pdf},

doi = {10.1038/s41467-022-33446-y},

year  = {2022},

date = {2022-10-04},

urldate = {2022-10-04},

journal = {Nature Communications},

volume = {13},

number = {5850},

abstract = {Halogen-mediated interactions play an important role in molecular recognition and crystallization in many chemical and biological systems, whereas their effect on homochiral versus heterochiral recognition and crystallization has rarely been explored. Here we demonstrate the evolution of Br⋯Br contacts in chiral recognition during 2D crystallization. On Ag(100), type I contacts prevail at low coverage and lead to homochiral recognition and the formation of 2D conglomerates; whereas type II contacts mediating heterochiral recognition are suppressed at medium coverage and appear in the racemates induced by structural transitions at high coverage. On Ag(111), type I contacts dominate the 2D crystallization and generate 2D conglomerates exclusively. DFT calculations suggest that the energy difference between type I and type II contacts is reversed upon adsorption due to the substrate induced mismatch energy penalty. This result provides fundamental understanding of halogen-mediated interactions in molecular recognition and crystallization on surface.},

note = {Halogen-mediated interactions control molecular recognition in many chemical and biological systems. Here, the authors demonstrate two types of Br⋯Br contacts and their importance in chiral on-surface crystallization.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Chiral molecular imprinting-based SERS detection strategy for absolute enantiomeric discrimination},

author = {Maryam Arabi and Abbas Ostovan and Yunqing Wang and Rongchao Mei and Longwen Fu and Jinhua Li and Xiaoyan Wang and Lingxin Chen},

url = {https://www.nature.com/articles/s41467-022-33448-w.pdf},

doi = {10.1038/s41467-022-33448-w},

year  = {2022},

date = {2022-10-01},

urldate = {2022-09-30},

journal = {Nature Communications},

volume = {13},

number = {5757},

abstract = {Chiral discrimination is critical in environmental and life sciences. However, an ideal chiral discrimination strategy has not yet been developed because of the inevitable nonspecific binding entity of wrong enantiomers or insufficient intrinsic optical activities of chiral molecules. Here, we propose an “inspector” recognition mechanism (IRM), which is implemented on a chiral imprinted polydopamine (PDA) layer coated on surface-enhanced Raman scattering (SERS) tag layer. The IRM works based on the permeability change of the imprinted PDA after the chiral recognition and scrutiny of the permeability by an inspector molecule. Good enantiomer can specifically recognize and fully fill the chiral imprinted cavities, whereas the wrong cannot. Then a linear shape aminothiol molecule, as an inspector of the recognition status is introduced, which can only percolate through the vacant and nonspecifically occupied cavities, inducing the SERS signal to decrease. Accordingly, chirality information exclusively stems from good enantiomer specific binding, while nonspecific recognition of wrong enantiomer is curbed. The IRM benefits from sensitivity and versatility, enabling absolute discrimination of a wide variety of chiral molecules regardless of size, functional groups, polarities, optical activities, Raman scattering, and the number of chiral centers.},

note = {Absolute chiral discrimination in chiral imprinted systems is complicated by the nonspecific binding of enantiomers. Here, the authors report a SERS “inspector” recognition mechanism to distinguish between specifically and nonspecifically bound enantiomers, even in seawater and urine.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Manipulation of time-dependent multicolour evolution of X-ray excited afterglow in lanthanide-doped fluoride nanoparticlesamplification of time dependent multicolour evolution of X-ray excited afterglow in lanthanide doped fluoride nanoparticles},

author = {Lei Lei and Yubin Wang and Weixin Xu and Renguang Ye and Youjie Hua and Degang Deng and Liang Chen and Paras N. Prasad and Shiqing Xu },

url = {https://www.nature.com/articles/s41467-022-33489-1.pdf},

doi = {10.1038/s41467-022-33489-1},

year  = {2022},

date = {2022-09-30},

urldate = {2022-09-29},

journal = {Nature Communications},

volume = {13},

number = {5739},

abstract = {External manipulation of emission colour is of significance for scientific research and applications, however, the general stimulus-responsive colour modulation method requires both stringent control of microstructures and continously adjustment of particular stimuli conditions. Here, we introduce pathways to manipulate the kinetics of time evolution of both intensity and spectral characteristics of X-ray excited afterglow (XEA) by regioselective doping of lanthanide activators in core-shell nanostructures. Our work reported here reveals the following phenomena: 1. The XEA intensities of multiple lanthanide activators are significantly enhanced via incorporating interstitial Na+ ions inside the nanocrystal structure. 2. The XEA intensities of activators exhibit diverse decay rates in the core and the shell and can largely be tuned separately, which enables us to realize a series of core@shell NPs featuring distinct time-dependent afterglow colour evolution. 3. A core/multi-shell NP structure can be designed to simultaneously generate afterglow, upconversion and downshifting to realize multimode time-dependent multicolour evolutions. These findings can promote the development of superior XEA and plentiful spectral manipulation, opening up a broad range of applications ranging from multiplexed biosensing, to high-capacity information encryption, to multidimensional displays and to multifunctional optoelectronic devices.},

note = {X-ray activated afterglow nanomaterials are desirable components for advanced optoelectronic applications. Here, the authors present pathways to modulate the stimulus-responsive color emissions in lanthanide-doped fluoride core-shell nanoparticles.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Synchronous quantitative analysis of chiral mesostructured inorganic crystals by 3D electron diffraction tomography},

author = {Jing Ai and Xueliang Zhang and Te Bai and Qing Shen and Peter Oleynikov and Yingying Duan and Osamu Terasaki and Shunai Che and Lu Han},

url = {https://www.nature.com/articles/s41467-022-33443-1.pdf},

doi = {10.1038/s41467-022-33443-1},

year  = {2022},

date = {2022-09-29},

urldate = {2022-09-29},

journal = {Nature Communications},

volume = {13},

number = {5718},

abstract = {Chiral mesostructures exhibit distinctive twisting and helical hierarchical stacking ranging from atomic to micrometre scales with fascinating structural-chiral anisotropy properties. However, the detailed determination of their multilevel chirality remains challenging due to the limited information from spectroscopy, diffraction techniques, scanning electron microscopy and the two-dimensional projections in transmission electron microscopy. Herein, we report a general approach to determine chiral hierarchical mesostructures based on three-dimensional electron diffraction tomography (3D EDT), by which the structure can be solved synchronously according to the quantitative measurement of diffraction spot deformations and their arrangement in reciprocal space. This method was verified on two samples—chiral mesostructured nickel molybdate and chiral mesostructured tin dioxide—revealing hierarchical chiral structures that cannot be determined by conventional techniques. This approach provides more precise and comprehensive identification of the hierarchical mesostructures, which is expected to advance our understanding of structural–chiral anisotropy at the fundamental level.

},

note = {Chiral mesostructured inorganic crystals exhibit distinctive twisting and helical hierarchical stacking. Here, the authors report a general approach for the synchronous quantitative analysis of rotation axis, torsion angle, pitch length, and arrangement modes.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Double-crowned 2D semiconductor nanoplatelets with bicolor power-tunable emission},

author = {Corentin Dabard and Victor Guilloux and Charlie Gréboval and Hong Po and Lina Makke and Ningyuan Fu and Xiang Zhen Xu and Mathieu G. Silly and Gilles Patriarche and Emmanuel Lhuillier and Thierry Barisien and Juan I. Climente and Benjamin T. Diroll and Sandrine Ithurria},

url = {https://www.nature.com/articles/s41467-022-32713-2.pdf},

doi = {10.1038/s41467-022-32713-2},

year  = {2022},

date = {2022-08-30},

urldate = {2022-08-30},

journal = {Nature Communications},

volume = {13},

number = {5094},

abstract = {Nanocrystals (NCs) are now established building blocks for optoelectronics and their use as down converters for large gamut displays has been their first mass market. NC integration relies on a combination of green and red NCs into a blend, which rises post-growth formulation issues. A careful engineering of the NCs may enable dual emissions from a single NC population which violates Kasha’s rule, which stipulates that emission should occur at the band edge. Thus, in addition to an attentive control of band alignment to obtain green and red signals, non-radiative decay paths also have to be carefully slowed down to enable emission away from the ground state. Here, we demonstrate that core/crown/crown 2D nanoplatelets (NPLs), made of CdSe/CdTe/CdSe, can combine a large volume and a type-II band alignment enabling simultaneously red and narrow green emissions. Moreover, we demonstrate that the ratio of the two emissions can be tuned by the incident power, which results in a saturation of the red emission due to non-radiative Auger recombination that affects this emission much stronger than the green one. Finally, we also show that dual-color, power tunable, emission can be obtained through an electrical excitation.},

note = {Nanocrystals are desirable light sources for advanced display technologies. Here, the authors report on double-crowned 2D semiconductor nanoplatelets as light downconverters that offer both green and red emissions to achieve a wide color gamut.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Imaging Cu2O nanocube hollowing in solution by quantitative in-situ X-ray ptychography},

author = {Lukas Grote and Martin Seyrich and Ralph Döhrmann and Sani Harouna-Mayer and Federica Mancini and Emilis Kaziukenas and Irene Fernandez-Cuesta and Cecilia Zito and Olga Vasylieva and Felix Wittwer and Michal Odstrcil and Natnael Mogos and Mirko Landmann and Christian Schroer and Dorota Koziej},

url = {https://www.nature.com/articles/s41467-022-32373-2.pdf},

doi = {10.1038/s41467-022-32373-2},

year  = {2022},

date = {2022-08-29},

urldate = {2022-08-29},

journal = {Nature Communications},

volume = {13},

number = {4971},

abstract = {Understanding morphological changes of nanoparticles in solution is essential to tailor the functionality of devices used in energy generation and storage. However, we lack experimental methods that can visualize these processes in solution, or in electrolyte, and provide three-dimensional information. Here, we show how X-ray ptychography enables in situ nano-imaging of the formation and hollowing of nanoparticles in solution at 155°C. We simultaneously image the growth of about 100 nanocubes with a spatial resolution of 66 nm. The quantitative phase images give access to the third dimension, allowing to additionally study particle thickness. We reveal that the substrate hinders their out-of-plane growth, thus the nanocubes are in fact nanocuboids. Moreover, we observe that the reduction of Cu2O to Cu triggers the hollowing of the nanocuboids. We critically assess the interaction of X-rays with the liquid sample. Our method enables detailed in-solution imaging for a wide range of reaction conditions.},

note = {Observing morphological changes of nanoparticles in solution requires advanced in-situ imaging methods. Here, the authors use X-ray ptychography to image the growth and hollowing of Cu2O nanocubes in 3D.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Three-dimensional nanoframes with dual rims as nanoprobes for biosensing},

author = {Hajir Hilal and Qiang Zhao and Jeongwon Kim and Sungwoo Lee and MohammadNavid Haddadnezhad and Sungjae Yoo and Soohyun Lee and Woongkyu Park and Woocheol Park and Jaewon Lee and Joong Wook Lee and Insub Jung and Sungho Park },

url = {https://www.nature.com/articles/s41467-022-32549-w.pdf},

doi = {10.1038/s41467-022-32549-w},

year  = {2022},

date = {2022-08-16},

journal = {Nature Communications},

volume = {13},

number = {4813},

abstract = {Three-dimensional (3D) nanoframe structures are very appealing because their inner voids and ridges interact efficiently with light and analytes, allowing for effective optical-based sensing. However, the realization of complex nanoframe architecture with high yield is challenging because the systematic design of such a complicated nanostructure lacks an appropriate synthesis protocol. Here, we show the synthesis method for complex 3D nanoframes wherein two-dimensional (2D) dual-rim nanostructures are engraved on each facet of octahedral nanoframes. The synthetic scheme proceeds through multiple executable on-demand steps. With Au octahedral nanoparticles as a sacrificial template, sequential processes of edge-selective Pt deposition and inner Au etching lead to Pt octahedral mono-rim nanoframes. Then, adlayers of Au are grown on Pt skeletons via the Frank-van der Merwe mode, forming sharp and well-developed edges. Next, Pt selective deposition on both the inner and outer boundaries leads to tunable geometric patterning on Au. Finally, after the selective etching of Au, Pt octahedral dual-rim nanoframes with highly homogeneous size and shape are achieved. In order to endow plasmonic features, Au is coated around Pt frames while retaining their geometric shape. The resultant plasmonic dual-rim engraved nanoframes possess strong light entrapping capability verified by single-particle surface-enhanced Raman scattering (SERS) and show the potential of nanoprobes for biosensing through SERS-based immunoassay.},

note = {

Most SERS-active nanostructures suffer from low robustness against misalignment to field polarization. Here, the authors demonstrate three-dimensional nanoframes of octahedral geometry, with two rims engraved on each facet, as polarization-independent SERS nanoprobes.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Precise electrical gating of the single-molecule Mizoroki-Heck reaction},

author = {Lei Zhang and Chen Yang and Chenxi Lu and Xingxing Li and Yilin Guo and Jianning Zhang and Jinglong Lin and Zhizhou Li and Chuancheng Jia and Jinlong Yang and K. N. Houk and Fanyang Mo and Xuefeng Guo },

url = {https://www.nature.com/articles/s41467-022-32351-8.pdf},

doi = {10.1038/s41467-022-32351-8},

year  = {2022},

date = {2022-08-05},

urldate = {2022-08-05},

journal = {Nature Communications},

volume = {13},

number = {4552 },

abstract = {Precise tuning of chemical reactions with predictable and controllable manners, an ultimate goal chemists desire to achieve, is valuable in the scientific community. This tunability is necessary to understand and regulate chemical transformations at both macroscopic and single-molecule levels to meet demands in potential application scenarios. Herein, we realise accurate tuning of a single-molecule Mizoroki-Heck reaction via applying gate voltages as well as complete deciphering of its detailed intrinsic mechanism by employing an in-situ electrical single-molecule detection, which possesses the capability of single-event tracking. The Mizoroki-Heck reaction can be regulated in different dimensions with a constant catalyst molecule, including the molecular orbital gating of Pd(0) catalyst, the on/off switching of the Mizoroki-Heck reaction, the promotion of its turnover frequency, and the regulation of each elementary reaction within the Mizoroki-Heck catalytic cycle. These results extend the tuning scope of chemical reactions from the macroscopic view to the single-molecule approach, inspiring new insights into designing different strategies or devices to unveil reaction mechanisms and discover novel phenomena.},

note = {Guiding chemical reactions in a predictable and controllable manner is an ultimate goal of chemistry. Here, the authors show tuning of the single-molecule Mizoroki-Heck catalytic cycle through electrical gating and direct in-situ detection.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Nesting of multiple polyhedral plasmonic nanoframes into a single entity},

author = {Sungjae Yoo and Jaewon Lee and Hajir Hilal and Insub Jung and Woongkyu Park and Joong Wook Lee and Soobong Choi and Sungho Park},

editor = {Christian Kuttner (Ed.)},

url = {https://www.nature.com/articles/s41467-022-32261-9.pdf},

doi = {10.1038/s41467-022-32261-9},

year  = {2022},

date = {2022-08-04},

urldate = {2022-08-04},

journal = {Nature Communications},

volume = {13},

number = {4544 },

abstract = {The development of plasmonic nanostructures with intricate nanoframe morphologies has attracted considerable interest for improving catalytic and optical properties. However, arranging multiple nanoframes in one nanostructure especially, in a solution phase remains a great challenge. Herein, we show complex nanoparticles by embedding various shapes of three-dimensional polyhedral nanoframes within a single entity through rationally designed synthetic pathways. This synthetic strategy is based on the selective deposition of platinum atoms on high surface energy facets and subsequent growth into solid platonic nanoparticles, followed by the etching of inner Au domains, leaving complex nanoframes. Our synthetic routes are rationally designed and executable on-demand with a high structural controllability. Diverse Au solid nanostructures (octahedra, truncated octahedra, cuboctahedra, and cubes) evolved into complex multi-layered nanoframes with different numbers/shapes/sizes of internal nanoframes. After coating the surface of the nanoframes with plasmonically active metal (like Ag), the materials exhibited highly enhanced electromagnetic near-field focusing embedded within the internal complicated rim architecture.},

note = {The spatial configuration of nanostructure building blocks determines the physical and optical properties of their superstructures. Here, the authors report on complex nanoparticles in which different geometric forms of nanoframes are nested into a single entity by multistep chemical reactions.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Kang2022,

title = {Conformational heterogeneity of molecules physisorbed on a gold surface at room temperature},

author = {Mingu Kang and Hyun Woo Kim and Elham Oleiki and Yeonjeong Koo and Hyeongwoo Lee and Huitae Joo and Jinseong Choi and Taeyong Eom and Geunsik Lee and Yung Doug Suh and Kyoung-Duck Park},

editor = {Christian Kuttner (Ed.)},

url = {https://www.nature.com/articles/s41467-022-31576-x.pdf},

doi = {10.1038/s41467-022-31576-x},

year  = {2022},

date = {2022-07-15},

urldate = {2022-07-15},

journal = {Nature Communications},

volume = {13},

number = {4133},

abstract = {A quantitative single-molecule tip-enhanced Raman spectroscopy (TERS) study at room temperature remained a challenge due to the rapid structural dynamics of molecules exposed to air. Here, we demonstrate the hyperspectral TERS imaging of single or a few brilliant cresyl blue (BCB) molecules at room temperature, along with quantitative spectral analyses. Robust chemical imaging is enabled by the freeze-frame approach using a thin Al2O3 capping layer, which suppresses spectral diffusions and inhibits chemical reactions and contamination in air. For the molecules resolved spatially in the TERS image, a clear Raman peak variation up to 7.5 cm−1 is observed, which cannot be found in molecular ensembles. From density functional theory-based quantitative analyses of the varied TERS peaks, we reveal the conformational heterogeneity at the single-molecule level. This work provides a facile way to investigate the single-molecule properties in interacting media, expanding the scope of single-molecule vibrational spectroscopy studies.},

note = {Tip-enhanced vibrational spectroscopy at room temperature is complicated by molecular conformational dynamics, photobleaching, contaminations, and chemical reactions in air. This study demonstrates that a sub-nm protective layer of Al2O3 provides robust conditions for probing single-molecule conformations.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Adenine oligomer directed synthesis of chiral gold nanoparticles},

author = {Nam Heon Cho and Young Bi Kim and Yoon Young Lee and Sang Won Im and Ryeong Myeong Kim and Jeong Won Kim and Seok Daniel Namgung and Hye-Eun Lee and Hyeohn Kim and Jeong Hyun Han and Hye Won Chung and Yoon Ho Lee and Jeong Woo Han and Ki Tae Nam },

editor = {Christian Kuttner (Ed.)},

url = {https://www.nature.com/articles/s41467-022-31513-y.pdf},

doi = {10.1038/s41467-022-31513-y},

year  = {2022},

date = {2022-07-02},

urldate = {2022-07-02},

journal = {Nature Communications},

volume = {13},

number = {3831},

abstract = {Precise control of morphology and optical response of 3-dimensional chiral nanoparticles remain as a significant challenge. This work demonstrates chiral gold nanoparticle synthesis using single-stranded oligonucleotide as a chiral shape modifier. The homo-oligonucleotide composed of Adenine nucleobase specifically show a distinct chirality development with a dissymmetric factor up to g ~ 0.04 at visible wavelength, whereas other nucleobases show no development of chirality. The synthesized nanoparticle shows a counter-clockwise rotation of generated chiral arms with approximately 200 nm edge length. The molecular dynamics and density functional theory simulations reveal that Adenine shows the highest enantioselective interaction with Au(321)R/S facet in terms of binding orientation and affinity. This is attributed to the formation of sequence-specific intra-strand hydrogen bonding between nucleobases. We also found that different sequence programming of Adenine-and Cytosine-based oligomers result in chiral gold nanoparticles’ morphological and optical change. These results extend our understanding of the biomolecule-directed synthesis of chiral gold nanoparticles to sequence programmable deoxyribonucleic acid and provides a foundation for programmable synthesis of chiral gold nanoparticles.},

note = {Chiral plasmonic nanoparticles are of great interest in nanotechnology. Here, the authors demonstrate chiral shape guidance by single-stranded oligonucleotides during particle growth based on sequence-specific hydrogen bonding within the strand.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Biomimetic non-classical crystallization drives hierarchical structuring of efficient circularly polarized phosphors},

author = {Li-Zhe Feng and Jing-Jing Wang and Tao Ma and Yi-Chen Yin and Kuang-Hui Song and Zi-Du Li and Man-Man Zhou and Shan Jin and Taotao Zhuang and Fengjia Fan and Manzhou Zhu and Hong-Bin Yao},

editor = {Christian Kuttner (Ed.)},

url = {https://www.nature.com/articles/s41467-022-30989-y.pdf},

doi = {10.1038/s41467-022-30989-y},

year  = {2022},

date = {2022-06-09},

urldate = {2022-06-09},

journal = {Nature Communications},

volume = {13},

number = {3339},

abstract = {Hierarchically structured chiral luminescent materials hold promise for achieving efficient circularly polarized luminescence. However, a feasible chemical route to fabricate hierarchically structured chiral luminescent polycrystals is still elusive because of their complex structures and complicated formation process. We here report a biomimetic non-classical crystallization (BNCC) strategy for preparing efficient hierarchically structured chiral luminescent polycrystals using well-designed highly luminescent homochiral copper(I)-iodide hybrid clusters as basic units for non-classical crystallization. By monitoring the crystallization process, we unravel the BNCC mechanism, which involves crystal nucleation, nanoparticles aggregation, oriented attachment, and mesoscopic transformation processes. We finally obtain the circularly polarized phosphors with both high luminescent efficiency of 32% and high luminescent dissymmetry factor of 1.5 × 10^−2, achieving the demonstration of a circularly polarized phosphor converted light emitting diode with a polarization degree of 1.84% at room temperature. Our designed BNCC strategy provides a simple, reliable, and large-scale synthetic route for preparing bright circularly polarized phosphors.},

note = {Chiral emitters with high photoluminescence quantum yield are desirable for use in circularly polarized LEDs. The authors demonstrate the transfer of chirality from nanoscale copper iodide clusters to microscale chiral luminescent polycrystals by non-classical crystallization.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}