A5103223714- Metal-Organic Frameworks: Synthesis and Applications
- Electrocatalysts for Energy Conversion
- Lanthanide and Transition Metal Complexes
- Magnetism in coordination complexes
- Covalent Organic Framework Applications
- Advanced battery technologies research
- Advanced Photocatalysis Techniques
- Speech Recognition and Synthesis
- Advanced Condensed Matter Physics
- Speech and Audio Processing
- Membrane Separation Technologies
- MXene and MAX Phase Materials
- Electrochemical Analysis and Applications
- Advanced Computational Techniques and Applications
- Boron and Carbon Nanomaterials Research
- Advanced NMR Techniques and Applications
- Graphene research and applications
- Magnetic and transport properties of perovskites and related materials
- Magnesium Oxide Properties and Applications
- CO2 Reduction Techniques and Catalysts
- Luminescence and Fluorescent Materials
- Supramolecular Self-Assembly in Materials
- Crystal Structures and Properties
- Catalytic Processes in Materials Science
- Electrochemical sensors and biosensors
Nanyang Medical College
2025
Stockholm University
2022-2024
Shaanxi Normal University
1999-2024
China XD Group (China)
2016-2019
China University of Geosciences (Beijing)
2017-2018
Xi'an Jiaotong University
2012-2017
China Tobacco
2017
Beijing University of Chemical Technology
2008
University of Colorado Boulder
2001
Studies have shown that variability introduced by stress or emotion can severely reduce speech recognition accuracy.Techniques for detecting assessing the presence of could help improve robustness systems.Although some acoustic variables derived from linear production theory been investigated as indicators stress, they are not always consistent.In this paper, three new features nonlinear Teager energy operator (TEO) classification.It is believed TEO based better able to reflect airflow...
Abstract Synthesizing molecule@support hybrids is appealing to improve molecular electrocatalysis. We report herein metal–organic framework (MOF)‐supported Co porphyrins for the oxygen reduction reaction (ORR) with improved activity and selectivity. can be grafted on MOF surfaces through ligand exchange. A variety of porphyrin@MOF were made using this method. Grafted showed boosted ORR large (>70 mV) anodic shift half‐wave potential compared ungrafted porphyrins. By active MOFs peroxide...
The creation of a perfect hollow nanoscopic sphere metal centers is clearly an unrealizable synthetic challenge. It is, however, inspirational challenge from the viewpoint chemical architecture and also as finite molecular species may provide unique microscopic insight into origin onset phenomena such topological spin-frustration effects found in infinite 2D 3D systems. Herein, we report series high-symmetry gadolinium(III) (S = 7/2) polyhedra, Gd20, Gd32, Gd50, Gd60, to test approach based...
Asymmetrical Pacman dinuclear Co bisporphyrin shows significantly improved activity and selectivity for catalytic reduction of O<sub>2</sub> to water in comparison with corresponding mononuclear porphyrins symmetrical bisporphyrins.
Abstract Two different methods were used to immobilize Co corroles on carbon nanotubes (CNTs) through covalent bonds. The resulting CNTs engineered with as electrocatalysts for the hydrogen evolution reaction (HER) and oxygen (OER) in aqueous solutions of pH 0, 7, 14. For both HER OER all solutions, hybrids obtained by attaching amidation coupling showed better performance. This is likely because large surface area good electrical conductivity can be well preserved during under mild conditions.
Two-dimensional conjugated metal-organic frameworks (2D c-MOFs) have emerged as a new class of crystalline layered conducting materials that hold significant promise for applications in electronics and spintronics. However, current 2D c-MOFs are mainly made from organic planar ligands, whereas constructed by curved or twisted ligands featuring novel orbital structures electronic states remain less developed. Herein, we report Cu-catecholate wavy c-MOF (Cu3(HFcHBC)2) based on fluorinated...
Two-dimensional conjugated metal-organic frameworks (2D c-MOFs) are emerging as a unique class of 2D electronic materials. However, intrinsically semiconducting c-MOFs with gaps in the Vis-NIR and high charge carrier mobility have been rare. Most reported metallic (i.e. gapless), which limits their use applications where larger band needed for logic devices. Herein, we design new D2h-geometric ligand, 2,3,6,7,11,12,15,16-octahydroxyphenanthro(9,10b)triphenylene (OHPTP), synthesize first...
Developing the topochemical polymerization of metal–organic frameworks (MOFs) is pronounced significance for expanding their functionalities but still a challenge on third-order nonlinear optics (NLO). Here, we report diacetylene MOF (CAS-1–3) films prepared using stepwise deposition method and film structural transformation approach, featuring dynamic diversity. The structures were determined by three-dimensional electron diffraction (3D ED) from nanocrystals collected films, which provides...
Abstract Multinuclear metal clusters are ideal candidates to catalyze small molecule activation reactions involving the transfer of multiple electrons. However, synthesizing active is a big challenge. Herein, on constructing an unparalleled Co 4 (SO ) cluster within porphyrin‐based metal–organic frameworks (MOFs) and electrocatalytic features such for oxygen evolution reaction (OER) reduction (ORR) reported. The II sulfate complexes tetrakis(4‐pyridyl)porphyrin under solvothermal conditions...
A covalent framework using fluorinated cobalt porphyrins is synthesized and shows significantly improved efficiency for the hydrogen evolution reaction in aqueous solution.
Two-dimensional covalent organic frameworks (2D COFs) are formed by the polycondensation of geometrically specific monomers to grow covalently connected 2D polygonal polymers over a–b plane and supramolecular polymerization and/or crystallization sheets along c direction constitute layer architectures. Despite various efforts, synthesis single-crystal COFs remains a challenging goal. Here, we report COFs, taking representative imine-linked TPB-DMTP-COF as an example, reveal key synthetic...
Nature selects Mn-clusters as catalysts for water oxidation, which is a significant reaction in photosynthesis.
Enzymes use a confined docking cavity and residual groups in the to regulate substrate selectivity catalytic activity. By mimicking enzymes, we herein report that metal–organic framework (MOF) KLASCC-1, with channels inside-channel pyridyl groups, can promote orthoformate hydrolysis basic solutions. studying pH-dependent using an analogue MOF lacks proved protonated as acid sites for hydrolysis. MOFs only open demonstrated necessity of channels. X-ray diffraction structures KLASCC-1...
The unlimited combination of building units, tunable structures, and facilitation tailoring active sites endows metal-organic frameworks (MOFs) with high activity as heterogeneous catalysts in various reactions, such hydrogen evolution reaction (HER), oxygen (OER), reduction (ORR), carbon dioxide (CO2RR), alcohol-oxidation reactions. Structure-property relationships are at the center development MOF improved activities stabilities. This perspective highlights recent advances designing...
Abstract Covalent organic frameworks (COFs) have been attracting intense research due to their permanent porosity, designable architecture, and high stability. However, COFs are challenging crystallize synthesis often results in tiny crystal sizes low crystallinities, which hinders an unambiguous structure determination. Herein, we demonstrate that the of low-crystallinity COF Py-1P nanocrystals can be solved by coupling three-dimensional electron diffraction (3DED) with simulated annealing...
Engineering the building blocks in metal-organic materials is an effective strategy for tuning their dynamical properties and can affect response to external guest molecules. Tailoring interaction diffusion of molecules into these structures highly important, particularly applications related gas separation. Herein, we report a vanadium-based hybrid ultramicroporous material, VOFFIVE-1-Ni, with temperature-dependent strong affinity effectively capture separate carbon dioxide (CO
Two new gadolinium(<sc>iii</sc>)-hydroxy-chloride materials with large magnetocaloric effects were facilely synthesized by using Cl<sup>−</sup> as the template.
In this paper, we proposed a number rule for 3d-4f and 4f cyclic coordination cages (CCCs); that is, CCCs consisting of vertex-sharing M4(μ3-OH)4 (M = 3d transition metal or lanthanide ions) units should have 3 × n centers (abbreviated M3n), where represents the subunits. Under reasoned some species CCCs, example, pentadecanuclear wheel pure wheels with 9 18 centers, practically existed. However, there are no such complexes reported in literature. To realize employed mixed-ligand approach,...
Abstract Synthesizing molecule@support hybrids is appealing to improve molecular electrocatalysis. We report herein metal–organic framework (MOF)‐supported Co porphyrins for the oxygen reduction reaction (ORR) with improved activity and selectivity. can be grafted on MOF surfaces through ligand exchange. A variety of porphyrin@MOF were made using this method. Grafted showed boosted ORR large (>70 mV) anodic shift half‐wave potential compared ungrafted porphyrins. By active MOFs peroxide...
We report the effect of humidity on oriented Cu-MOF films, including epitaxial transformation 3D-oriented Cu 2 (BDC) DABCO into .
ConspectusIn the development of 2D metal–organic frameworks (MOFs) and covalent organic (COFs), obtaining structural details at atomic level is crucial to understanding their properties related mechanisms in potential applications. However, since 2D-MOFs COFs are composed layered structures often exhibit sheet-like morphologies, it challenging grow large crystals suitable for single-crystal X-ray diffraction (SCXRD). Therefore, ab initio structure determination, which refers solving directly...
The structures of covalent organic frameworks (COFs) are typically determined through modeling based on powder X-ray diffraction. However, the intrinsically limited crystallinity COFs often results in structural determinations low fidelity. Here, we present real-space imaging an extensively studied two-dimensional imine-based COF. Contrary to conventional understanding that this COF features uniform hexagonal pores, our observations reveal presence two distinct sets pores with differences...