Wei Xu

ORCID: 0000-0003-1950-9037
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Research Areas
  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Organic Electronics and Photovoltaics
  • Conducting polymers and applications
  • Organic and Molecular Conductors Research
  • Advanced Thermoelectric Materials and Devices
  • Perovskite Materials and Applications
  • Metal-Organic Frameworks: Synthesis and Applications
  • Porphyrin and Phthalocyanine Chemistry
  • Advanced Memory and Neural Computing
  • Magnetism in coordination complexes
  • Luminescence and Fluorescent Materials
  • Molecular Junctions and Nanostructures
  • Catalytic Alkyne Reactions
  • Cyclopropane Reaction Mechanisms
  • Organic Light-Emitting Diodes Research
  • Advanced battery technologies research
  • Photochromic and Fluorescence Chemistry
  • Electrocatalysts for Energy Conversion
  • Catalytic C–H Functionalization Methods
  • Catalysis and Hydrodesulfurization Studies
  • Catalytic Processes in Materials Science
  • Supercapacitor Materials and Fabrication
  • Covalent Organic Framework Applications
  • Advancements in Battery Materials

Chinese Academy of Sciences
2016-2025

Chinese Academy of Medical Sciences & Peking Union Medical College
2022-2025

Wangjing Hospital of China Academy of Chinese Medical Sciences
2025

Ningbo Institute of Industrial Technology
2014-2024

University of Chinese Academy of Sciences
2015-2024

Beijing National Laboratory for Molecular Sciences
2015-2024

Wuhan Polytechnic University
2024

Institute of Chemistry
2015-2024

Hubei Academy of Agricultural Sciences
2024

Nanjing Institute of Technology
2024

The abundance of solar thermal energy and the widespread demands for waste heat recovery make thermoelectric generators (TEGs) very attractive in harvesting low‐cost resources. Meanwhile, refrigeration is promising local cooling niche applications. In this context there currently a growing interest developing organic materials which are flexible, cost‐effective, eco‐friendly potentially energy‐efficient. particular, past several years have witnessed remarkable progress devices. review,...

10.1002/adma.201305371 article EN Advanced Materials 2014-03-31

Abstract Currently, studies on organic two-dimensional (2D) materials with special optic-electronic properties are attracting great research interest. However, 2D systems possessing promising electrical transport still rare. Here a highly crystalline thin film of copper coordination polymer, Cu-BHT (BHT=benzenehexathiol), is prepared via liquid–liquid interface reaction between BHT/dichloromethane and copper(II) nitrate/H 2 O. The morphology structure characterization reveal that this piled...

10.1038/ncomms8408 article EN cc-by Nature Communications 2015-06-15

A series of metal coordination polymers containing 1,1,2,2-ethenetetrathiolate (ett) linking bridge (poly[Ax(M-ett)]) are synthesized. The Seebeck coefficients these conducting materials high, and vary according to the center metals counter cations. TE device fabricated demonstrates great potentials for applications.

10.1002/adma.201104305 article EN Advanced Materials 2012-01-17

ConspectusOrganic donor–acceptor (DA) complexes have attracted wide attention in recent decades, resulting the rapid development of organic binary system electronics. The design and synthesis DA with a variety component structures mainly focused on metallicity (or even superconductivity), emission, or ferroelectricity studies. Further efforts been made high-performance electronic investigations. chemical versatility semiconductors provides great number possibilities for semiconducting...

10.1021/acs.accounts.7b00124 article EN Accounts of Chemical Research 2017-06-13

High-quality perovskite monocrystalline films are successfully grown through cavitation-triggered asymmetric crystallization. These enable a simple cell structure, ITO/CH3NH3PbBr3/Au, with near 100% internal quantum efficiency, promising power conversion efficiencies (PCEs) >5%, and superior stability for prototype cells. Furthermore, the devices using hole-transporter-free structure yield PCEs ≈6.5%, highest among other similar-structured CH3NH3PbBr3 solar cells to date. As service our...

10.1002/adma.201506292 article EN Advanced Materials 2016-03-02

A graphene oxide nanosheets/multi-walled carbon nanotubes (GO/MWCNTs) hybrid with excellent electrocatalytic redox reversibility towards VO2+/VO2+ couples for vanadium flow batteries (VRFB) has been prepared by an electrostatic spray technique after efficient ultrasonic treatment. The structures and electrochemical properties of GO/MWCNTs are investigated transmission electron microscopy, scanning X-ray diffraction, photoelectron spectroscopy, Raman spectroscopy cyclic voltammetry. shown to...

10.1039/c1ee01776d article EN Energy & Environmental Science 2011-01-01

We report the synthesis, characterization, and application of a novel series diketopyrrolopyrrole (DPP)-containing quinoidal small molecules as highly efficient n-type organic semiconductors in thin film transistors (TFTs). The first two representatives these species exhibit maximum electron mobility up to 0.55 cm(2) V(-1) s(-1) with current on/current off (I(on)/I(off)) values 10(6) for 1 by vapor evaporation, 0.35 I(on)/I(off) 10(5)-10(6) 2 solution process air, which is demonstration...

10.1021/ja3003183 article EN Journal of the American Chemical Society 2012-02-21

Abstract A highly crystalline copper(II) benzenehexathiolate coordination polymer (Cu‐BHT) has been prepared. The two‐dimensional kagome structure confirmed by powder X‐ray diffraction, high‐resolution transmission electron microscopy, and scanning microscopy. as‐prepared sample exhibits bulk superconductivity at about 0.25 K, which is the zero resistivity, AC magnetic susceptibility, specific heat measurements. Another diamagnetic transition 3 K suggests that there a second superconducting...

10.1002/anie.201707568 article EN Angewandte Chemie International Edition 2017-11-21

Redox-active organic cathode materials have drawn growing attention because of the broad availability raw materials, eco-friendliness, scalable production, and diverse structural flexibility. However, commonly suffer from fragile stability in solvents, poor electrochemical charge/discharge processes, insufficient electrical conductivity. To address these issues, using Cu(II) salt benzenehexathiolate (BHT) as precursors, we synthesized a robust redox-active 2D metal–organic framework (MOF),...

10.1021/acsnano.0c05200 article EN ACS Nano 2020-08-24

Conjugated backbones play a fundamental role in determining the electronic properties of organic semiconductors. On basis two solution-processable dihydropyrrolo[3,4-c]pyrrole-1,4-diylidenebis(thieno[3,2-b]thiophene) derivatives with aromatic and quinoid structures, we have carried out systematic study relationship between conjugated-backbone structure thermoelectric properties. In particular, combination UV–vis–NIR spectra, photoemission spectroscopy, doping optimization are utilized to...

10.1021/jacs.7b05344 article EN Journal of the American Chemical Society 2017-08-18

Flexible thin films of poly(nickel-ethylenetetrathiolate) prepared by an electrochemical method display promising n-type thermoelectric properties with the highest ZT value up to 0.3 at room temperature. Coexistence high electrical conductivity and Seebeck coefficient in this coordination polymer is attributed its degenerate narrow-bandgap semiconductor behavior.

10.1002/adma.201505922 article EN Advanced Materials 2016-03-01

In this review, recent advances in organic polymer thermoelectric composites, mainly focusing on the preparation strategies to achieve enhanced performance, have been discussed.

10.1039/c6tc05488a article EN Journal of Materials Chemistry C 2017-01-01

An alternatively stacked donor-acceptor complex from solution is obtained. As a self-assembled "molecular level heterojunction", this crystal displays stable ambipolar transport behaviors in ambient atmosphere. The balance hole and electron properties are rationalized through theoretical considerations band structure calculation, analysis on super-exchange effects the intermolecular electronic couplings as well molecular reorganization energy. Detailed facts of importance to specialist...

10.1002/adma.201200578 article EN Advanced Materials 2012-04-13

Abstract Thermoelectric materials have attracted more attention in recent years, which can be corroborated by the increasing scientific publications. Moreover, optimistic prediction for thermoelectric industry proves that practicability of technology is further acknowledged. Recently, benefitting from rapid development organic electronics, research (OTE) receiving particular interest. Cooperation and complementation between inorganic could promote broader application effect. To realize high...

10.1002/aelm.201800825 article EN Advanced Electronic Materials 2019-02-05

Abstract The application of traditional inorganic thermoelectric materials to wearable energy harvesters has been hindered by the rigid bulkiness, while flexible organic conductive polymers have long troubled their intrinsic low thermopower. An ideal solution that possesses merits two is desperately needed for practical application. Here it demonstrated a polyacrylamide (PAAm)‐based ultra‐stretchable hydrogel can be selected as superior candidate matrix and stretchable thermocells adapt...

10.1002/aenm.202201542 article EN Advanced Energy Materials 2022-09-06

A cyclic ethylene linked triphenylamine dimer formed highly crystalline thin film via vapor deposition. Meanwhile, the corresponding linear molecule only resulted in amorphous films under same condition. The performance as FET semiconductor also improved significantly when molecular structure derived from to type. displayed mobilities excess of 10-2 cm2 V-1 s-1 and high on/off ratios up 107.

10.1021/ja064726s article EN Journal of the American Chemical Society 2006-11-29

Due to their low thermal conductivity, non-toxicity and cost, conductive polymer materials are potential candidates for thermoelectric applications. Here, a detailed investigation into the properties of P3HT films is reported. A power factor over 20 μW m−1 K−2 at room temperature was obtained by employing ferric salt triflimide (TFSI−) anions as dopant. Flexible P3HT-TFSI were characterized X-ray photoelectron spectroscopy (XPS), diffraction (XRD) scanning electron microscopy (SEM), along...

10.1039/c2ee23006b article EN Energy & Environmental Science 2012-01-01

Fullerene/sulfur-bridged annulene cocrystals with a two-dimensional segregated alternating layer structure were prepared by simple solution process. Single-crystal analysis revealed the existence of continuing π–π interactions in both donor and acceptor layers, which serve as transport paths for holes electrons separately. The ambipolar behaviors demonstrated single-crystal field-effect transistors rationalized quantum calculations. Meanwhile, preliminary photoresponsivity was observed...

10.1021/ja310098k article EN Journal of the American Chemical Society 2012-12-28

Chrysanthemum-like α-FeOOH was synthesized via an environment-friendly H2O/ethylene glycol (EG) cooperating-mediated method. Based on detailed characterizations of the as-obtained hierarchical nanostructure, assembly process and possible formation mechanism were clarified. The nanomaterial exhibits a high adsorption performance in water treatment.

10.1039/c1jm10979k article EN Journal of Materials Chemistry 2011-01-01

Abstract Two‐dimensional covalent organic frameworks (2D COFs) provide a unique platform for the molecular design of electronic and optoelectronic materials. Here, synthesis characterization an electroactive COF containing well‐known tetrathiafulvalene (TTF) unit is reported. The TTF‐COF crystallizes into 2D sheets with eclipsed AA stacking motif, shows high thermal stability permanent porosity. presence TTF units endows electron‐donating ability, which characterized by cyclic voltammetry....

10.1002/chem.201405330 article EN Chemistry - A European Journal 2014-09-29
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