A5073824709- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Nanocluster Synthesis and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Nanomaterials in Catalysis
- Crystallography and molecular interactions
- Quantum Dots Synthesis And Properties
- Bacterial Identification and Susceptibility Testing
- Spectroscopy Techniques in Biomedical and Chemical Research
- Nanoparticle-Based Drug Delivery
- Nanoplatforms for cancer theranostics
- Random Matrices and Applications
- Protein Interaction Studies and Fluorescence Analysis
- Nanomaterials for catalytic reactions
- Catalytic Processes in Materials Science
- Advanced Photocatalysis Techniques
- Protein Structure and Dynamics
- Copper-based nanomaterials and applications
- Advanced biosensing and bioanalysis techniques
- Luminescence and Fluorescent Materials
- Calcium Carbonate Crystallization and Inhibition
- Metabolomics and Mass Spectrometry Studies
- Polymer Surface Interaction Studies
- Enzyme Structure and Function
- Carbon and Quantum Dots Applications
Henan Normal University
2009-2025
Shenzhen University
2023-2025
Shenzhen Technology University
2025
Shanghai University
2023-2024
Ningbo University
2020-2023
Shanghai Institute of Applied Physics
2023
University of Geneva
2022
Shenzhen University Health Science Center
2022
Huazhong Agricultural University
2020
Green Chemistry
2019
Abstract Determining the structures of nanoparticles at atomic resolution is vital to understand their structure–property correlations. Large metal with core diameter beyond 2 nm have, date, eluded characterization by single-crystal X-ray analysis. Here we report chemical syntheses and two giant thiolated Ag containing 136 374 atoms (that is, up 3 diameter). As largest crystallographically determined so far, these enter truly metallic regime emergence surface plasmon resonance. miniatures...
A yellow luminescent thiolate-protected Ag(14)(SC(6)H(3)F(2))(12)(PPh(3))(8) cluster was synthesized and structurally characterized by single-crystal X-ray analysis. The contains an octahedral Ag(6)(4+) unit encapsulated eight cubically arranged [Ag(+)(SC(6)H(3)F(2)(-))(2)PPh(3)] tetrahedra that share one corner (i.e. SC(6)H(3)F(2)(-)) between them.
With the incorporation of Pd or Pt atoms, thiolated Ag-rich 25-metal-atom nanoclusters were successfully prepared and structurally characterized for first time. a composition [PdAg24(SR)18](2-) [PtAg24(SR)18](2-), obtained have metal framework structure similar to that widely investigated Au25(SR)18. In both clusters, M@Ag12 (M = Pd, Pt) core is capped by six distorted dimeric -RS-Ag-SR-Ag-SR- units. However, silver-thiolate overlayer gives rise geometric chirality at variance The effect...
In this work, a facile ion-pairing strategy for asymmetric synthesis of optically active negatively charged chiral metal nanoparticles using ammonium cations is demonstrated. A new thiolated three-concentric-shell cluster, [Ag28Cu12(SR)24]4–, was first synthesized as racemic mixture and characterized by single-crystal X-ray structure determination. Mass spectrometric measurements revealed relatively strong interactions between the anionic nanocluster cations. Inspired observation,...
Three novel bimetallic Au-Cu nanoclusters stabilized by a mixed layer of thiolate and phosphine ligands bearing pyridyl groups are synthesized fully characterized X-ray single crystal analysis density functional theory computations. The three clusters have an icosahedral Au13 core face-capped two, four, eight Cu atoms, respectively. All face-capping atoms in the triply coordinated or groups. surface control exposure Au sites clusters. In case Au13Cu8 cluster, presence 12 2-pyridylthiolate...
The combined use of thiolate and diphosphine as surface ligands helps to stabilize subnanometer Ag(0) nanoclusters, resulting in the successful crystallization two Ag(0)-containing nanoclusters (Ag16 Ag32) for X-ray single crystal analysis. Both clusters have core–shell structures with Ag86+ Ag2212+ their cores, which are not simply either fragments face-centered cubic metals or five-fold twinned counterparts. display UV-Vis absorption spectra consisting molecule-like optical transitions.
A series of all-thiol stabilized bimetallic Au-Cu nanoclusters, [Au(12+n)Cu32(SR)(30+n)](4-) (n = 0, 2, 4, 6 and SR SPhCF3), are successfully synthesized characterized by X-ray single-crystal analysis density functional theory (DFT) calculations. Each cluster consists a Keplerate two-shell Au12@Cu20 core protected (6 - n) units Cu2(SR)5 n Cu2Au(SR)6 6) motifs on its surface. The size structural evolution the clusters is atomically controlled Au precursors countercations used in syntheses....
Demonstrated herein are the preparation and crystallographic characterization of family fcc silver nanoclusters from Nichol's cube to Rubik's beyond via ligand-control (thiolates phosphines in this case). The basic building block is our previously reported cluster [Ag14(SPhF2)12(PPh3)8] (1). metal frameworks [Ag38(SPhF2)26(PR'3)8] (22) [Ag63(SPhF2)36(PR'3)8]+ (23), where HSPhF2 = 3,4-difluorothiophenol R' alkyl/aryl, composed 2 × 4 8 cubes 1, respectively. All serial clusters share similar...
A general strategy, using mixed ligands, is utilized to synthesize atomically precise, intrinsically chiral nanocluster [Ag78(DPPP)6(SR)42] (Ag78) where DPPP the achiral 1,3-bis(diphenyphosphino)propane and SR = SPhCF3. Ag78 crystallizes as racemates in a centric space group. Using diphosphines BDPP 2,4-bis(diphenylphosphino)pentane, enantiomeric pair [Ag78(R/S-BDPP)6(SR)42] can be prepared with 100% optical purity. The gives rise to, separately, two asymmetric surface coordination motifs...
The second near-infrared window (NIR-II, wavelength of 1.0–1.4 μm) is optimal for the bioimaging live animals due to their low albedo and endogenous autofluorescence. Herein, we report a facile one-pot biomimetic synthesis approach prepare water-dispersible NIR-II-emitting ultrasmall Ag2S quantum dots (QDs). Photoluminescence spectra showed that emission peaks could be tuned from 1294 1050 nm as size QDs varied 6.8 1.6 nm. x-ray diffraction patterns photoelectron confirmed products were...
Simple shape control: Ultrathin Pd nanosheets are readily fabricated by simply mixing [Pd2(μ-CO)2Cl4]2− with H2O at ambient temperature. The as-prepared surface clean and serve as an excellent platform to evaluate the effect of organic capping agents on catalytic electrocatalytic properties nanocrystals.
Abstract In nature, protein subunits on the capsids of many icosahedral viruses form rotational patterns, and mathematicians also incorporate asymmetric patterns into faces polyhedra. Chemists have constructed molecular polyhedra with vacant or highly symmetric faces, but very little is known about constructing faces. Here we report a strategy to embellish C 3h truxene unit an octahedron, forming chiral octahedra that exhibit largest molar ellipticity ever reported, best our knowledge. The...
A green gold-cluster, Au30S(StBu)18, was successfully prepared in high yield and crystallographically characterized. Each cluster consists of an Au22 core capped by a mixed layer staple Au-thiolate units, bridging thiolates μ3-S(2-).
A facile method has been developed for face-to-face assembly of two-dimensional surfactant-free Pd nanosheets into one-dimensional superlattice nanowires. The length the nanowires can be well controlled by introducing cations different concentration and charge density. Our studies reveal that with higher density have stronger charge-screening ability, their introduction leads to more positive zeta-potential decreased electrostatic repulsion between negatively charged nanosheets. Moreover,...
The Fourier transform infrared (FT-IR) signals obtained from bacterial samples are specific and reproducible, making FT-IR an efficient tool for typing at a subspecies level. However, the accuracy could be affected by many factors, including sample preparation spectral acquisition. Here, we present unified protocol based on spectroscopy. We describe culture spectrum collection. then detail preprocessing multivariate analysis of data typing.
The prevalence of drug-resistant bacteria is a major challenge throughout the world, especially with respect to Gram-negative bacteria, such as Acinetobacter baumannii, which are regarded greatest bacterial threat human health by World Health Organization (WHO). In this work, 1,3,4-thiadiazole was introduced into main skeleton classical peptidomimetic peptide deformylase (PDF) inhibitor in pursuit highly efficient and broad-spectrum bacteriostatic drugs. Upon detailed structure–activity...
<title>Abstract</title> In the realm of nanomaterials science, precise and controllable synthesis nanoclusters remains a formidable challenge. This study focuses on silver sulfide via halide ion template method, with an in - depth exploration underlying mechanism. By meticulously regulating halogen concentration, reaction solvent, other parameters, diverse array distinct structures has been successfully fabricated characterized at atomic precision level using X-ray single crystal...