A5101556123- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Metal-Organic Frameworks: Synthesis and Applications
- Crystallography and molecular interactions
- Magnetism in coordination complexes
- Supramolecular Chemistry and Complexes
- Covalent Organic Framework Applications
- Lanthanide and Transition Metal Complexes
- Supramolecular Self-Assembly in Materials
- Polyoxometalates: Synthesis and Applications
- Molecular Sensors and Ion Detection
- Organic and Molecular Conductors Research
- Phosphorus and nutrient management
- Metal complexes synthesis and properties
- Advanced NMR Techniques and Applications
- Adsorption and biosorption for pollutant removal
- Enhanced Oil Recovery Techniques
- Nanocluster Synthesis and Applications
- Layered Double Hydroxides Synthesis and Applications
- Machine Learning in Materials Science
- Crystal structures of chemical compounds
- Advanced Battery Materials and Technologies
- Carbon dioxide utilization in catalysis
- Porphyrin and Phthalocyanine Chemistry
- Fullerene Chemistry and Applications
Chinese Academy of Sciences
2007-2025
Xiamen Institute of Rare-earth Materials
2017-2025
Fujian Institute of Research on the Structure of Matter
2006-2024
Fuzhou University
2024
University of Chinese Academy of Sciences
2024
Tan Kah Kee Innovation Laboratory
2022-2023
Fujian Normal University
2023
Kyushu University
2015-2017
National Institute for Materials Science
2016-2017
Georgia Institute of Technology
2010-2014
Metal–organic frameworks (MOFs) with the Zr6O4(OH)4 secondary building unit (SBU) have been of particular interest for potential commercial and industrial uses because they can be easily tailored are reported to chemically thermally stable. However, we show that there significant changes in chemical thermal stability MOFs incorporation different organic linkers. As number aromatic rings is increased from one two 1,4-benzene dicarboxylate (UiO-66, ZrMOF–BDC) 4,4′-biphenyl (UiO-67,...
The practical use of metal-organic frameworks (MOFs) in applications ranging from adsorption separations to controlled storage and release hinges on their stability humid or aqueous environments. sensitivity certain MOFs under conditions is well-known, but systematic studies water properties are lacking. This information critical for developing design criteria directing future synthesis efforts. goal this work understand the influence extent Zn-O bond shielding relative stabilities belonging...
The rational design of metal-organic frameworks (MOFs) with structural stability in the presence humid conditions is critical to commercialization this class materials. However, systematic water studies required develop criteria for construction water-stable MOFs are still scarce. In work, we show that by varying functional groups on 1,4-benzenedicarboxylic acid (BDC) linker DMOF [Zn(BDC)(DABCO)(0.5)], can systematically tune kinetic isostructural, pillared family MOFs. To illustrate...
A series of new lanthanide hybrids [Ln3(μ-OH)4 (2,5-pydc)(2,5-Hpydc)3(H2O)4]n (Ln = Gd (1), Dy (2), Er (3), Eu (4), Sm (5), Yb (6), Y (7); 2,5-pydc=pyridine-2,5-dicarboxylate), as clustered oxide ring tunnels with helical dodecahedral chains and fully 3D Ln−O−Ln connectivity, has been hydrothermally synthesized characterized. The inorganic skeleton the hybrid can be specified by Schläfli symbol (6210)2 (64102) a single (3,4)-connected net. luminescence properties have studied, results showed...
Constructing supramolecular cages with multiple subunits via weak intermolecular interactions is a long-standing challenge in chemistry. So far, π-stacked still remain unexplored. Here, we report series of cage based hierarchical self-assemblies. The (π-MX-cage) assembled from 16 [MXL]+ ions (M = Mn2+, Co2+; X Br–, SCN–, Cl–; and L tris(2-benzimidazolylmethyl)amine) 18 π-stacking interactions. tetrahedral cage, consisting four as the vertexes six pairs edges, features 48 exterior N–H...
Abstract Four types of cobalt–lanthanide heterometallic compounds based on metalloligand Co(2,5‐pydc) 3 3− (2,5‐H 2 pydc=pyridine‐2,5‐dicarboxylate acid), [Ln Co (2,5‐pydc) 6 (H O) 4 ] n ⋅ H O ( 1 ) (Ln=Tb, Dy for a , b respectively), [Tb ), 9 and [LaCo(2,5‐pydc) have been synthesized. Compound has layer structure with well‐isolated carboxylate‐bridged Ln 3+ chains, compound is three‐dimensional (3D) porous network Tb chains that are also well isolated carboxylate bridged, dinuclear units,...
Abstract Harnessing molecular motion to reversibly control macroscopic properties, such as shape and size, is a fascinating challenging subject in materials science. Here we design crystalline cobalt(II) complex with an n -butyl group on its ligands, which exhibits reversible crystal deformation at structural phase transition temperature. In the low-temperature phase, of freezes. On heating, rotates ca. 100° around C–C bond resulting 6–7% expansion size along packing direction. Importantly,...
The performance of metal-organic frameworks (MOFs) in humid or aqueous environments is a topic great significance for variety applications ranging from adsorption separations to gas storage. While number water-stable MOFs have emerged recently the literature, majority are known poor water stability compared zeolites and activated carbons, there therefore critical need perform systematic water-stability studies characterize comprehensively after exposure. Using these we can isolate specific...
This work reports a new three-dimensional flexible lanthanide metal–organic framework [La(BTB)(H2O)·3DMF]n (BTB = 1,3,5-tris(4-carboxyphenyl) benzene) that possesses rare chiral space group (P6522), very high thermal stability (560 °C), and surface area (1014 m2 g−1). MOF demonstrates large adsorption hysteresis loop on the N2 isotherm at 77 K after activation 300 °C. Powder X-ray thermodiffraction experiments reveal structural transformation occurs upon removal of guest molecules. The...
Abstract Flexible porous materials generally switch their structures in response to guest removal or incorporation. However, the design of with empty shape-switchable pores remains a formidable challenge. Here, we demonstrate that structural transition between an orthorhombic phase and tetragonal flexible dodecatuple intercatenated supramolecular organic framework can be controlled cooperatively through incorporation thermal treatment, thus inducing shape-memory nanopores. Moreover, was...
Selective separation using porous adsorbents is an energy-efficient alternative to traditional techniques. Stacked organic molecular frameworks (POMFs) capable of noncovalent π⋅⋅⋅π interactions are emerging as a new kind that facilitate green separation. Here we report robust crystal (TAPM-1), which stabilized by multiple intermolecular interactions. With its long-range π-stacking, TAPM-1 has excellent hydrophobicity, thermostability, recyclability, and high selectivity for aromatics over...
Two 3D cobalt-organic frameworks formulated as [Co3(2,4-pydc)2(micro3-OH)2]n.5nH2O (1) and [Co3(2,4-pydc)2(micro3-OH)2(H2O)]n.7nH2O (2) (2,4-pydc=pyridine-2,4-dicarboxylate) have been hydrothermally synthesized characterized. Both compounds 1 2 exhibit the porous with hydroxyl-bridged metal Delta-chains. However, in comparison only two crystallographically independent CoII ions a unit of 2, three are found an asymmetric 1, where their Delta-chains constructed by types vertexes sharing...
A novel three-dimensional (3D) microporous lanthanide−organic framework [Nd(2,5-pydc)(Ac)(H2O)]n·2nH2O (1) has been prepared under hydrothermal conditions. The results of an X-ray crystallographic analysis revealed that compound 1 a 3D nanotubular structure. From the topological point view, intricate can be specified by Schläfli symbol (42638) as zeolite ABW net. H2 adsorption isotherm at 77 K shows uptake 132 cm3 g−1 1.0 atm.
Chiral nanotube: A flexible porous homochiral SrSi2 framework of two types single-stranded helical nanotubes is presented (see structure). The CuI ions in the can be oxidized to CuII through single-crystal-to-single-crystal transformation forming a new, topologically equivalent phase, accompanied by an expansion unit cell volume 12.51 %.
Highly porous metal–organic frameworks (MOFs) [Cu3(MBTC)2(H2O)3]n (where MBTC is methyl-1,3,5-benzenetricarboxylate) and [Cu3(EBTC)2(H2O)3]n EBTC ethyl-1,3,5-benzenetricarboxylate) have been solvothermally synthesized. The MOFs are isostructural to each other but do not form the same framework as HKUST-1 (CuBTC) due steric impact of alkyl-functionalized ligands. new formed by two different [Cu2(O2CR)4] units R an aromatic ring), which create three-dimensional with open-metal sites high...
Abstract We demonstrate that three flexible MOFs termed FJI‐H11‐R (FJI‐H=Hong's group in Fujian Institute of Research on the Structure Matter, R=Me, Et, i Pr) can reversibly respond to temperature and solvents via structural transformations, which be visualized by situ single‐crystal X‐ray snapshot analyses. exhibit colossal anisotropic thermal expansion, with a record‐high uniaxial positive thermal‐expansion coefficient 653.2×10 −6 K −1 observed FJI‐H11‐Me. Additionally, large c ‐axial...
The capture of radioactive iodine (129I or 131I) is significant importance for the production nuclear power and treatment waste. In recent years, crystallized porous materials have been extensively investigated to achieve highly effective adsorption iodine. Herein, by using hydrothermal method, a Ni cluster-based framework (1) was successfully constructed through self-assembly process. Driven π–π stacking interactions between π-electron-rich benzimidazole groups, [Ni5S6] clusters stack in...