A5111762653- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Supramolecular Chemistry and Complexes
- Molecular Sensors and Ion Detection
- Covalent Organic Framework Applications
- Crystallography and molecular interactions
- Advanced Photocatalysis Techniques
- Luminescence and Fluorescent Materials
- Metal-Organic Frameworks: Synthesis and Applications
- Chemical Synthesis and Analysis
- CO2 Reduction Techniques and Catalysts
- Supramolecular Self-Assembly in Materials
- Ionic liquids properties and applications
- DNA and Nucleic Acid Chemistry
- Perovskite Materials and Applications
- Carbohydrate Chemistry and Synthesis
- Advanced battery technologies research
- International Business and FDI
- Synthesis and Properties of Aromatic Compounds
- Innovation and Knowledge Management
- Oxidative Organic Chemistry Reactions
- Electrocatalysts for Energy Conversion
- Catalytic C–H Functionalization Methods
- RNA and protein synthesis mechanisms
- Lanthanide and Transition Metal Complexes
Chinese Academy of Sciences
2012-2025
ShanghaiTech University
2014-2025
Shanghai Advanced Research Institute
2014-2025
Yan'an University
2025
Sanya University
2024
Shanghai Jiao Tong University
2012-2024
Shanghai Ninth People's Hospital
2024
Institutes of Science and Development
2024
University of Chinese Academy of Sciences
2018-2023
Jiangxi Science and Technology Normal University
2022-2023
Abstract 2D covalent organic frameworks (COFs) could have well‐defined arrangements of photo‐ and electro‐active units that serve as electron or hole transport channels for solar energy harvesting conversion, but their insufficient charge transfer rapid recombination impede the sunlight‐driven photocatalytic performance. We report a new donor–acceptor (D–A) system, PyTz‐COF was constructed from electron‐rich pyrene (Py) electron‐deficient thiazolo[5,4‐ d ]thiazole (Tz). With its bicontinuous...
Developing efficient catalysts for steering the electrochemical CO2 reduction reaction (CO2RR) toward high-value chemicals beyond CO and formic acid is highly desirable. Herein, we have developed copper-based confined within a rationally designed covalent triazine framework (CTF-B), featuring CuN2Cl2 structure, selective CO2RR to hydrocarbons with maximum Faradaic efficiency (FE) of 81.3% an FE C2H4 up 30.6%. Operando X-ray adsorption fine structure analyses reveal potential-driven dynamic...
Experimental evidence derived from a comprehensive study of self-assembled organosilane multilayer film system undergoing process postassembly chemical modification that affects interlayer-located polar groups the constituent molecules while preserving its overall molecular architecture allows quantitative evaluation both degree intralayer polymerization and interlayer covalent bonding silane headgroups in highly ordered layer assembly this type. The investigated consists layer-by-layer...
A bicyclic host molecule 1 consisting of a pillar[5]arene and 1,5-dioxynaphthalene-based crown ether unit has been synthesized, the two cyclic subunits in were found to recognize different guest molecules (1,4-dicyanobutane paraquat) selectively or take up simultaneously.
Direct electrosynthesis of hydrogen peroxide (H2O2) by oxygen reduction is a green and safe strategy to replace the traditional anthraquinone process. Herein, we have designed two-dimensional redox-active cationic covalent triazine network be used directly as cost-effective metal-free electrocatalyst for reaction (ORR) form H2O2. Such dicationic 2D polymer possesses porous structure with pore diameters 2-10 nm total N content 13.3 wt%. The electron paramagnetic resonance experiment confirms...
Abstract CO is usually the dominant product on silver‐based catalysts in electrochemical 2 reduction reaction (CO RR) possibly due to weak *CO adsorption. In this report, a hydroxypillar[5]arene‐extended porous polymer‐confined silver catalyst (PAF‐PA5‐Ag‐0.8) for RR which can selectively produce ethanol with maximum Faradaic efficiency of 55% at 11 mA cm −1 described. The study reveals that hydroxypillar[5]arene‐confined Ag clusters are active sites formation. Moreover,...
Coordination-driven self-assembly of ortho-linked oxacalix[2]benzene[2]pyrazine (1) as well oxacalix[2]arene[2]pyrazine (2) with a silver cation resulted in the formation discrete molecular cage (3) and one-dimensional chain coordination cages (4), respectively. Single crystal X-ray diffraction analysis confirmed structures 3 4. The ions adopted tetrahedral geometries while 4 square-planar geometries. void metal-containing was occupied by methyl group an acetonitrile bonded to neighboring...
A Pd(II)-catalyzed aerobic intermolecular 1,2-diamination of conjugated dienes was developed for the regio- and chemoselective preparation a variety functionalized tetrahydroquinoxalines, using simple sulfonyl protected o-phenylendiamines as nitrogen source. This methodology provides direct efficient synthesis tetrahydroquinoxalines. O2 used stoichiometric oxidant, reaction conditions were applied to series dienes. 35 examples are described, good yields selectivities obtained majority products.
Pd(II)-catalyzed intermolecular 1,2-aminooxygenation and 1,2-oxyamination of conjugated dienes have been developed. The chemoselective preparation a variety 2-functionalized 3-functionalized 1,4-benzoxazine derivatives was accomplished via the adjustment coordinating solvent. Oxygen successfully used in this oxidative difunctionalization alkenes. Good yields selectivities were obtained for most products. A product bearing spiro structure also from 2,3-disubstituted-1,3-diene.
The adsorption process is widely used for the treatment of wastewater containing organic pollutants. We fabricated highly branched pillar[5]arene-based porous aromatic frameworks (PAFs), PAF-P5, and removal pollutants (short-chain alkyl derivatives 1–3 pesticide molecules 4–6) from water with high efficiency (RE). However, PAF-P5 was incapable adsorbing dyes 7–9. Adsorption kinetic studies indicated that mainly driven by strong host–guest interactions between pillar[5]arene units in while...
Two conjugated organic photocatalysts, thiophene-based TzDTT and thiophene 4,4-dioxide-based TzDTDO, demonstrate remarkably different photocatalytic hydrogen evolution activities in various reaction solution systems.
To promote the charge carrier utilization for efficient photoelectrochemical (PEC) water splitting, we design novel covalent triazine-based polymers (CTPs) with a controllable energy band alignment to construct hybrid heterojunction photoanodes BiVO4 based on matching conception. The bands of CTPs same triazine backbone can match well by lengthening aryl groups as electron donors through convenient aromatic nucleophilic substitution reaction enhance separation and transfer capacity....
Electrochemical H2O2 production via two-electron (2e–) oxygen reduction is a green onsite alternative to the current anthraquinone process. However, searching for cost-effective, metal-free electrocatalysts with high activity and selectivity toward 2e– route still remains challenging. Herein we report an ionic covalent organic polymer (BPyTTz-COP:Br) that was made from conjugation of viologen electron-withdrawing thiazolo[5,4-d]thiazole (TTz). The facilitates adsorption O2 exhibits (92%) in...
In a convergent approach to the marine natural product (+)-norrisolide (1) two bicyclic ring systems are coupled through C9C10 bond assemble carbon framework in late stage of synthesis. Other highlights synthetic strategy include formation unusual fused γ-lactone–γ-lactol motif 1 sequence oxidation reactions. Supporting information for this article is available on WWW under http://www.wiley-vch.de/contents/jc_2002/2004/z52868_s.pdf or from author. Please note: The publisher not responsible...
A [2]rota[2]catenane, based on a pillar[5]arene-crown ether fused bicycle, was constructed and its structure determined crystallographically.
Abstract 2D covalent organic frameworks (COFs) could have well‐defined arrangements of photo‐ and electro‐active units that serve as electron or hole transport channels for solar energy harvesting conversion, but their insufficient charge transfer rapid recombination impede the sunlight‐driven photocatalytic performance. We report a new donor–acceptor (D–A) system, PyTz‐COF was constructed from electron‐rich pyrene (Py) electron‐deficient thiazolo[5,4‐ d ]thiazole (Tz). With its bicontinuous...
Despite the fact that rim and lateral functionalizations of pillar[n]arenes have been well explored, ortho-functionalization has rarely realized. In this work, we report a facile method introducing single functionality ortho to hydroxyl group in A1/A2-dihydroxypillar[5]arene via Grignard addition pillar[4]arene[1]quinone followed by dienone-phenol rearrangement. The described ortho-alkylation/arylation allowed formation various mono ortho-alkyl/aryl-substituted A1/A2-dihydroxypillar[5]arenes...
Abstract A stereoselective synthesis of (+)‐norrisolide is presented. This natural product belongs to a family marine spongiane diterpenes the structure which characterized by fused γ‐lactone–γ‐lactol ring system attached bicyclic hydrophobic core. Our studies led development expedient such motifs based on expansion cyclopropyl ester. Highlights synthetic strategy toward norrisolide include coupling two systems constructing sterically demanding C9C10 bond and installation C19 oxygen at last...