A5063130397- Metal-Organic Frameworks: Synthesis and Applications
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Nanocluster Synthesis and Applications
- Advanced Nanomaterials in Catalysis
- Covalent Organic Framework Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Luminescence Properties of Advanced Materials
- Radioactive element chemistry and processing
- Magnetism in coordination complexes
- Crystallography and molecular interactions
- Insect Resistance and Genetics
- Pharmacological Effects and Toxicity Studies
- Lanthanide and Transition Metal Complexes
- Gas Sensing Nanomaterials and Sensors
- Insect-Plant Interactions and Control
- Remote Sensing and Land Use
- Advanced Photocatalysis Techniques
- Zeolite Catalysis and Synthesis
- Insect Pest Control Strategies
- Membrane Separation and Gas Transport
- Image Enhancement Techniques
- Bacterial Genetics and Biotechnology
- Boron and Carbon Nanomaterials Research
- Alzheimer's disease research and treatments
Sichuan University
2012-2025
Nanjing Agricultural University
2021-2024
Sun Yat-sen University
2024
Jiangsu Normal University
2024
Shandong University
2023-2024
Xihua University
2024
Yangtze University
2024
Northwest Normal University
2023
Chinese Academy of Fishery Sciences
2018-2023
University of Pittsburgh
2012-2022
Understanding how gold nanoclusters nucleate from Au(I)SR complexes necessitates the structural elucidation of with decreasing size. Toward this effort, we herein report crystal structure an ultrasmall nanocluster formulated as Au20(TBBT)16 (TBBT = SPh-t-Bu). The features a vertex-sharing bitetrahedral Au7 kernel and unprecedented "ring" motif-Au8(SR)8. This large ring protects through strong Auring-Aukernel bonding but does not involve S-Aukernel bonding, in contrast to common "staple"...
Understanding the isomerism phenomenon at nanoscale is a challenging task because of prerequisites precise composition and structural information on nanoparticles. Herein, we report ligand-induced, thermally reversible isomerization between two thiolate-protected 28-gold-atom nanoclusters, i.e. Au28(S-c-C6H11)20 (where -c-C6H11 = cyclohexyl) Au28(SPh-(t)Bu)20 -Ph-(t)Bu 4-tert-butylphenyl). The intriguing ligand effect in dictating stability Au28(SR)20 structures further investigated via...
We report the structure determination of a large gold nanocluster formulated as Au130(p-MBT)50, where p-MBT is 4-methylbenzenethiolate. The constructed in four-shell manner, with 55 atoms assembled into two-shell Ino decahedron. surface protected exclusively by -S-Au-S- staple motifs, which self-organize five ripple-like stripes on barrel-shaped Au105 kernel. Au130(p-MBT)50 can be viewed an elongated version Au102(SR)44. Comparison recently discovered icosahedral Au133(p-TBBT)52 (where...
Structures of gold clusters resemble the benzene and DNA molecules reveal a “supermolecule” origin magic-sized clusters.
Abstract Unravelling the atomic structures of small gold clusters is key to understanding origin metallic bonds and nucleation from organometallic precursors. Herein we report X‐ray crystal structure a charge‐neutral [Au 18 (SC 6 H 11 ) 14 ] cluster. This exhibits an unprecedented bi‐octahedral (or hexagonal close packing) Au 9 kernel protected by staple‐like motifs including one tetramer, dimer, three monomers. Until present, cluster smallest crystallographically characterized thiolates...
To explore the electronic and catalytic properties of nanoclusters, here we report an aromatic-thiolate-protected gold nanocluster, [Au25(SNap)18]− [TOA]+, where SNap = 1-naphthalenethiolate TOA tetraoctylammonium. It exhibits distinct differences in comparison with previously reported [Au25(SCH2CH2Ph)18]−, albeit their skeletons (i.e., Au25S18 framework) are similar. A red shift by ∼10 nm HOMO–LUMO absorption peak wavelength is observed for which attributed to its dilated Au13 kernel. The...
The [Au37(PPh3)10(SR)10X2]+ nanocluster (where SR = thiolate and X Cl/Br) was theoretically predicted in 2007, but since then, there has been no experimental success the synthesis structure determination. Herein, we report a kinetically controlled, selective of [Au37(PPh3)10(SC2H4Ph)10X2]+ (counterion: Cl– or Br–) with its crystal characterized by X-ray crystallography. This shows rod-like assembled from three icosahedral Au13 units linear fashion, consistent earlier prediction. optical...
Gossypol (Gsp), a natural toxin concentrated in cottonseeds, poses great risks to the safe consumption of cottonseed products, which are used extensively throughout food industry. In this work, we report first luminescence "turn-on" sensors for Gsp using near-infrared emitting lanthanide (Ln3+) materials, including Ln3+ MOFs and salts. We demonstrate that Yb3+ photoluminescence MOF, Yb-NH2-TPDC, can be employed selectively detect with limit detection 25 μg/mL via response from completely...
We report the synthesis and crystal structure determination of a gold nanocluster with 103 atoms protected by 2 sulfidos 41 thiolates (i.e., 2-naphthalenethiolates, S-Nap), denoted as Au103S2(S-Nap)41. The crystallographic analysis reveals that thiolate ligands on form local tetramers intracluster interactions C–H···π π···π stacking. herringbone pattern formation via intercluster is also observed, which leads to linearly connected zigzag in single crystal. kernel Marks decahedron Au79, same...
Abstract We report the X‐ray structure of a gold nanocluster with 30 atoms protected by 18 1‐adamantanethiolate ligands (formulated as Au (S‐Adm) ). This exhibits threefold rotationally symmetrical, hexagonal‐close‐packed (HCP) kernel six dimeric 2 (SR) 3 staple motifs. new is distinctly different from previously reported S(S‐ t Bu) tert ‐butylthiolate and one sulfido ligand face‐centered cubic (FCC) 22 kernel. The has an anomalous solubility (it only soluble in benzene but not other common...
Unveiling the ligand binding mode on crystalline surfaces is important for deciphering long-standing structural enigma in self-assembled monolayers (SAMs). Here, and patterning structures of thiolates (SR) Au(100) facet are revealed basis atomic structure a highly regular, single Au92(SR)44 nanocrystal. The six exposed facets this tetragonal nanocrystal give rise to pieces "nanoSAMs". We found that bind planar (100) via simple bridge-like assembled into an overlayer with c(2 × 2) symmetry....
Chiral nanoparticle assemblies are an interesting class of materials whose chiroptical properties make them attractive for a variety applications. Here, C18-(PEPAuM-ox)2 (PEPAuM-ox = AYSSGAPPMoxPPF) is shown to direct the assembly single-helical gold superstructures that exhibit exceptionally strong activity at plasmon frequency with absolute g-factor values up 0.04. Transmission electron microscopy (TEM) and cryogenic tomography (cryo-ET) results indicate single helices have periodic pitch...
Strain-promoted "click" chemistry is used to post-synthetically modify the pore walls of azide-functionalized mesoporous bio-MOF-100 (N3-bio-MOF-100). The reactions proceed in high yield and produce no byproduct. This new method was introduce various functional groups into MOF mesopores, including succinimidyl ester bioconjugation moieties that allow for straightforward coupling biomolecules walls.
Crystalline 3-D materials bearing interlinked domains of differential porosity and functionality offer the potential for organizing shuttling molecular nanoscale matter to specific locations within space. Here, we present methods creating prototype MOF that have such structural features. Specifically, process pore expansion via ligand exchange was studied an isoreticular series mesoporous MOFs based on bMOF-100. It found occurs incrementally in small steps it proceeds gradually "outside→in"...
The Td point group symmetry of rare earth (RE3+) metal clusters RE4(μ3-OH)4(COO)62+ makes them attractive building blocks for creating metal–organic frameworks (MOFs) with controllable topologies. Herein, we describe the design and synthesis a series isoreticular MOFs featuring pcu topology [MOF-1114(RE) MOF-1115(RE)] variable ions (RE3+ = Y3+, Sm3+, Eu3+, Gd3+, Tb3+, Dy3+, Ho3+, Er3+, Tm3+, Yb3+) linear amino-functionalized dicarboxylate linkers different lengths. In total, report 22 that...
A sequential postsynthetic ligand exchange process was used to prepare a series of mono-, di-, and trifunctionalized mesoporous metal-organic frameworks (MOFs). Using this process, orthogonal functional groups were installed thereafter postsynthetically modified with dye quencher molecules. Microspectrophotometry studies determine the distribution two within MOF crystals.
We introduce the concept of domain building blocks (DBBs) as an effective approach to increasing diversity and complexity metal–organic frameworks (MOFs). DBBs are defined distinct structural or compositional regions within a MOF material. Using DBB approach, we illustrate how immense number multivariate materials can be prepared from small collection molecular comprising domains. The nature MOFs is determined by sequence MOF. then apply this construction rich library UiO-67 stratified...
Thiolato-protected gold nanoclusters have acquired wide applications; however, on the fundamental science end there is still a lack of deep understanding their high stability. Recent success in transforming highly robust biicosahedral Au38(SCH2CH2Ph)24 nanocluster into an extremely stable tetrahedral Au36(SPh-(t)Bu)24 raises important question: Is transformation due to bulkiness effect SPh-(t)Bu or electronic conjugation aromatic ligand as opposed nonaromatic SCH2CH2Ph? Toward this goal, we...
It has long been a challenge to dope metal nanoparticles with specific number of heterometal atoms at positions. This becomes even more challenging if the belongs same group as host because high tendency forming distribution alloy different numbers dopants due similarities metals in outmost electron configuration. Herein we report new strategy for shuttling single Ag or Cu atom into centrally hollow, rod-shaped Au24 nanoparticle, AgAu24 and CuAu24 highly controllable manner. Through combined...
Ultrasmall nanoclusters (e.g., Au15(SR)13) are crucial in not only real applications such as bioapplication but also understanding the structure transition from gold complexes to nanoclusters. However, determination of these transition-sized has long been a major challenge. In this work, two new regime, including thus far smallest thiolated alloy nanocluster Cd1Au14(StBu)12 and homogold Au16(S-Adm)12, obtained their atomic structures fully determined by single crystal X-ray diffraction....
Using diverse building blocks, such as different heterometallic clusters, in metal-organic framework (MOF) syntheses greatly increases MOF complexity and leads to emergent synergistic properties. However, applying reticular chemistry involving more than two molecular blocks is challenging there limited progress this area. We are therefore motivated develop a strategy for achieving systematic differential control over the coordination of multiple metals MOFs. Herein, we report design...
Abstract The mariculture industry is planning to move offshore due the decline of China's inshore fishery resources, deterioration water environment, inefficient industrial structure and other influencing factors. This article first analyses imbalance between supply demand aquatic products, development space aquaculture supporting policies, thereby concluding that China has significant potential develop aquaculture. Subsequently, status in examined. research progress facilities, marine...