Chenyue Sun
A5008962776- Metal-Organic Frameworks: Synthesis and Applications
- Catalytic Processes in Materials Science
- X-ray Diffraction in Crystallography
- Microstructure and mechanical properties
- Covalent Organic Framework Applications
- Crystallization and Solubility Studies
- Magnetism in coordination complexes
- Machine Learning in Materials Science
- Luminescence and Fluorescent Materials
- Metal and Thin Film Mechanics
- Lanthanide and Transition Metal Complexes
- Advanced ceramic materials synthesis
- Polydiacetylene-based materials and applications
- Catalysis and Oxidation Reactions
- Molecular Sensors and Ion Detection
- Magnesium Alloys: Properties and Applications
- Surface and Thin Film Phenomena
- Organometallic Complex Synthesis and Catalysis
- Organic and Molecular Conductors Research
- Advanced Battery Materials and Technologies
- Mesoporous Materials and Catalysis
- Analytical Chemistry and Sensors
- Carbon dioxide utilization in catalysis
- Organic Light-Emitting Diodes Research
- Polyoxometalates: Synthesis and Applications
Xihua University
2025
Cornell University
2024
Massachusetts Institute of Technology
1979-2023
Institute of Molecular Functional Materials
2016
State Key Laboratory of Synthetic Chemistry
2016
University of Hong Kong
2016
IBM Research - Thomas J. Watson Research Center
1982
American Ceramic Society
1981
Weatherford College
1981
We report on the continuous fine-scale tuning of band gaps over 0.4 eV and electrical conductivity 4 orders magnitude in a series highly crystalline binary alloys two-dimensional electrically conducting metal-organic frameworks M3(HITP)2 (M = Co, Ni, Cu; HITP 2,3,6,7,10,11-hexaiminotriphenylene). The isostructurality permits direct synthesis (MxM'3-x)(HITP)2 (MM' CuNi, CoNi, CoCu) with metal compositions precisely controlled by precursor ratios. attribute both to changes free-carrier...
Porosity and surface area analysis play a prominent role in modern materials science. At the heart of this sits Brunauer-Emmett-Teller (BET) theory, which has been remarkably successful contribution to field The BET method was developed 1930s for open surfaces but is now most widely used metric estimation areas micro- mesoporous materials. Despite its widespread use, calculation causes spread reported areas, resulting reproducibility problems both academia industry. To prove this, analysis,...
Recent advancements in quantum sensing have sparked transformative detection technologies with high sensitivity, precision, and spatial resolution. Owing to their atomic-level tunability, molecular qubits ensembles thereof are promising candidates for chemical analytes. Here, we show of lithium ions solution at room temperature an ensemble organic radicals integrated a microporous metal-organic framework (MOF). The exhibit electron spin coherence microwave addressability temperature, thus...
We reveal here the construction of Ni-based metal-organic frameworks (MOFs) and conjugated coordination polymers (CCPs) with different structural dimensionalities, including closely π-stacked 1D chains (Ni-1D), aggregated 2D layers (Ni-2D), a 3D framework (Ni-3D), based on 2,3,5,6-tetraamino-1,4-hydroquinone (TAHQ) its various oxidized forms. These materials have same metal-ligand composition but exhibit distinct electronic properties caused by dimensionalities supramolecular interactions...
Abstract Intrinsic secondary grain boundary dislocation (GBD) structures were observed by weak-beam transmission electron microscopy in a variety of [001] twist boundaries MgO prepared welding technique. Square networks intrinsic screw GBDs found possessing deviations from the exact ∑ = 1, 6, 13, 17, 25, 29 and 53 coincidence site lattice (CSL) misorientations. (∑ ≡ fraction sites coincidence.) These all perfect with Burgers vectors given primitive corresponding DSC except case 13 where...
Abstract The synthesis, excited‐state dynamics, and applications of two series air‐stable luminescent tungsten(VI) complexes are described. These show phosphorescence in the solid state solutions with emission quantum yields up to 22 % thin film (5 mCP) at room temperature. Complex 2 c , containing a 5,7‐diphenyl‐8‐hydroxyquinolinate ligand, displays prompt fluorescence (blue–green) (red) comparable intensity, which could be used for ratiometric sensing. Solution‐processed organic...
The installation of metallo-ligands in metal–organic frameworks (MOFs) is an effective means to create site-isolated metal centers toward single-site heterogeneous catalysis. Although trispyrazolyborate (Tp) and tripyrazolylmethane (Tpm) form one the most iconic classes homogeneous catalysts, neither has been used as a metallo-ligand for generation MOFs thus far. Here, we show that upon situ metalation with CuI, tricarboxylated Tpm ligand reacts ZrOCl2 generate new MOF exhibiting neutral...
The metal–organic framework CuI-MFU-4l reacts with NO, initially forming a copper(I)-nitrosyl at low pressure, and subsequently generates NO disproportionation products CuII–NO2 N2O. thermal stability of MFU-4l allows NOx to be released from the temperatures greater than 200 °C. This treatment regenerates original CuI-MFU-4l, which can engage in subsequent cycles disproportionation.
Porosity and surface area analysis play a prominent role in modern materials science, where 123 their determination spans the fields of natural sciences, engineering, geology medical 124 research. At heart this sits Brunauer-Emmett-Teller (BET) theory,[1] which has been 125 remarkably successful contribution to field science. The BET method was 126 developed 1930s is now most widely used metric for estimation 127 areas porous materials.[2] Since first developed, there an 128 explosion...
Abstract Ternary CaAl 2 Si ‐structure‐type Zintl compounds are promising p‐type counterparts to n‐type Mg 3 (Sb, Bi) for thermoelectric energy conversion. However, many of these suffer from low carrier concentration and mobility, resulting in poor performance. Here, it is revealed that their ultralow mobility stems strong polar optical phonon scattering, demonstrate electrical transport properties can be dramatically boosted by employing a screening effect. By isovalent alloying with Cd Yb,...
The current knowledge of the structure high‐angle grain boundaries in metals and ceramic oxides is critically reviewed. Particular attention given to effects due differences bonding crystal these solid types. results recent experimental work efforts model grain‐boundary using computer simulation methods are described. Important characteristic features materials discussed. Difficulties which presently being encountered determine their pointed out.
We report a systematic study on the gas-phase polymerization of ethylene by metal–organic framework (MOF) catalyst. Cr3+-exchanged MFU-4l (Cr(III)-MFU-4l, = Zn5Cl4(BTDD)3, H2BTDD bis(1H-1,2,3,-triazolo[4,5-b],[4′,5′-i])dibenzo[1,4]dioxin)) serves as an exemplary system to demonstrate prereaction treatment with alkylaluminum species simple method isolate active MOF catalyst for liquid-free ethylene. AlMe3-treated Cr(III)-MFU-4l subjected 40 bar exhibits activity 52 000...
Porosity and surface area analysis play a prominent role in modern materials science, where 123 their determination spans the fields of natural sciences, engineering, geology medical 124 research. At heart this sits Brunauer-Emmett-Teller (BET) theory,[1] which has been 125 remarkably successful contribution to field science. The BET method was 126 developed 1930s is now most widely used metric for estimation 127 areas porous materials.[2] Since first developed, there an 128 explosion...
Abstract Dianionic hyponitrite (N 2 O 2− ) is often proposed, based on model complexes, as the key intermediate in reductive coupling of nitric oxide to nitrous at bimetallic active sites heme‐copper oxidases and reductases. In this work, we examine gas‐solid reaction with metal–organic framework Cu I ‐ZrTpmC* a suite situ spectroscopies density functional theory simulations, identify an unusual chelating N .− intermediate. These results highlight advantage provided by site‐isolation...
Abstract Extrinsic secondary grain boundary dislocation (GBD) structures have been observed by weak-beam transmission electron microscopy in a variety of [001] twist boundaries MgO. These were derived from segments lattice dislocations embedded the and could be interpreted as result decomposition into extrinsic GBDs subsequent interaction product with intrinsic structure. The results demonstrate that MgO are attracted to over wide range conditions tend remain GBD structures. All observations...
Abstract The synthesis, excited‐state dynamics, and applications of two series air‐stable luminescent tungsten(VI) complexes are described. These show phosphorescence in the solid state solutions with emission quantum yields up to 22 % thin film (5 mCP) at room temperature. Complex 2 c , containing a 5,7‐diphenyl‐8‐hydroxyquinolinate ligand, displays prompt fluorescence (blue–green) (red) comparable intensity, which could be used for ratiometric sensing. Solution‐processed organic...
Nanoporous Materials In article number 2201502, David Fairen-Jimenez and co-workers conduct a round-robin exercise by providing 18 already-measured adsorption isotherms to sixty-one labs show that the reproducibility of Brunauer–Emmett–Teller (BET) area determination in micro- mesoporous materials remains largely ignored issue. To solve this, new computational approach—called BETSI—that expands on Rouquerol criteria makes an unambiguous BET assignment possible is developed.
We report the isolation of vanadium(II) in a metal-organic framework (MOF) by reaction chloride-capped secondary building unit all-vanadium(III) V-MIL-101 (1) with 1,4-bis(trimethylsilyl)-2,3,5,6-tetramethyl-1,4-dihydropyrazine. The reduced material, 2, has formal composition [VIIV2III], each metal ion presenting one open coordination site. Subsequent O2 yields side-on η2 vanadium-superoxo species, 3. MOF featuring V(III)-superoxo moieties exhibits mild enhancement isosteric enthalpy...
Abstract Dianionic hyponitrite (N 2 O 2− ) is often proposed, based on model complexes, as the key intermediate in reductive coupling of nitric oxide to nitrous at bimetallic active sites heme‐copper oxidases and reductases. In this work, we examine gas‐solid reaction with metal–organic framework Cu I ‐ZrTpmC* a suite situ spectroscopies density functional theory simulations, identify an unusual chelating N .− intermediate. These results highlight advantage provided by site‐isolation...
Porosity and surface area analysis play a prominent role in modern materials science, where their determination spans the fields of natural sciences, engineering, geology medical research. At heart this sits Brunauer-Emmett-Teller (BET) theory,[1] which has been remarkably successful contribution to field science. The BET method was developed 1930s for open surfaces but is now most widely used metric estimation areas micro- mesoporous materials.[2] Since first developed, there an explosion...
Abstract Polymer electrolytes exhibit higher energy density and improved safety in lithium‐ion batteries relative to traditionally used liquid but are currently limited by their lower electrochemical performance. Aiming access polymer with competitive properties, we developed the anionic ring‐opening polymerization (AROP) of cyclic silaketals synthesize amorphous silicon‐containing polyether‐based varying substituent bulk general formula [OSi(R) 2 (CH CH O) ] n (R=alkyl, phenyl). As opposed...