A5074779338- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Supramolecular Chemistry and Complexes
- Covalent Organic Framework Applications
- Advanced Photocatalysis Techniques
- Molecular Sensors and Ion Detection
- Metal-Organic Frameworks: Synthesis and Applications
- Luminescence and Fluorescent Materials
- CO2 Reduction Techniques and Catalysts
- Supramolecular Self-Assembly in Materials
- Ionic liquids properties and applications
- Electrocatalysts for Energy Conversion
- Chemical Synthesis and Analysis
- Crystallography and molecular interactions
- Perovskite Materials and Applications
- Advanced battery technologies research
- Photoreceptor and optogenetics research
- Advanced NMR Techniques and Applications
- Electrostatics and Colloid Interactions
- Fuel Cells and Related Materials
- Synthesis of heterocyclic compounds
- Electronic and Structural Properties of Oxides
- Spacecraft and Cryogenic Technologies
- Magnetism in coordination complexes
- Magnetic and transport properties of perovskites and related materials
Anhui University of Science and Technology
2025
Shanghai Advanced Research Institute
2015-2023
Chinese Academy of Sciences
1997-2023
Changsha University of Science and Technology
2023
University of Chinese Academy of Sciences
2015-2023
The People's Hospital Tongling
2018-2022
Dalian National Laboratory for Clean Energy
2020-2021
ShanghaiTech University
2020
Academia Sinica
2019
Qualcomm (United States)
2017
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...
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.
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,...
Multicavity macrocyclic hosts are host molecules comprising more than one guest binding components connected through multipoint linkages. Macrocycles, such as crown ethers, pillar[n]arenes, calix[n]arenes, and calix[4]pyrroles, have been used to fabricate multicavity hosts, either homotopic or heterotopic. This review is mainly focused on the molecular structures host-guest behaviors of their applications in assembly sophisticated supramolecular architectures.
An acid–base-responsive supramolecular host–guest system based on a planarly chiral A1/A2-diamino-substituted pillar[5]arene (1)/imidazolium ion recognition motif was created. The pillar[4]arene[1]diaminobenzene 1 can bring an electron-deficient imidazolium cation into its cylindrically shaped cavity under neutral or basic conditions and release it acidic conditions.
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...
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...
In this study, we performed first-principles calculations to investigate the electronic properties, defect formation energies, and optical characteristics of (Al+S) co-doped (In+S) SrTiO3 . Our results reveal that exhibits lowest energy, smallest lattice parameter, andthe most stable structure among studied systems. The band gap S-doped is determined be 1.78 eV, which significantly reduced 1.56 eV 0.78 upon Al co-doping, respectively, for (Al+S)@STO (In+S)@STO. light absorption spectra both...
A [2]rota[2]catenane, based on a pillar[5]arene-crown ether fused bicycle, was constructed and its structure determined crystallographically.
A pillar[5]arene-crown ether fused bicyclic host 1 was found to be able recognize an imidazolium ion G1 by its pillar[5]arene subunit and a viologen G2 crown receptor discriminatively. The simultaneous binding of resulted in the formation three-component host–guest complex G1⊂1⊃G2. Negative heterotropic cooperative effects were displayed their investigated stepwise bindings 1.
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...
FeN4-type carbon-based materials are promising non-precious-metal catalysts for the oxygen reduction reaction (ORR). However, FeN4/C always exhibit different ORR activities and selectivities, their structure–performance relationship remains elusive. Herein, we design a covalent triazine framework with abundant N4 units (CTF-N4) to anchor Fe ions precisely prepare precursor (CTF-FeN4) that undergoes 2e– pathway high selectivity. Interestingly, such can be switched 4e– route through modulation...
Abstract An improved partial oxidation of 1,4‐dimethoxypillar[5]arene (DMP[5]) was described, through which selected pillar[ n ]arene[5− ]quinones, such as pillar[4]arene[1]quinone, pillar[3]arene[2]quinone, pillar[2]arene[3]quinone and pillar[1]arene[4]quinone, were synthesized by manipulating the ratio oxidative reagent (NH 4 ) 2 [Ce(NO 3 6 ] to DMP[5].
pseudo[1]Catenane 3 is in a self-included conformation chloroform, but dichloromethane, it exists an equilibrium between the conformational state and de-threading one. The planar chirality inversion of can be triggered by host-guest complexation with adiponitrile G, extent such chiral switching depends on length bis(pyrazin-2-yloxy)alkane chains - longer are more favored than shorter ones inversion.
Despite extensive efforts, only three main strategies have been developed to synthesize covalent triazine-based frameworks (CTFs) thus far. We report herein a totally new synthetic strategy which allows C-C bonds in the CTFs be formed through aromatic nucleophilic substitution reactions. The as-synthesized CTF-1 and CTF-2 exhibited photocatalytic water splitting activity comparable made using ionothermal or Brønsted acid-catalyzed polymerization. Interestingly, distinguished itself by its...