A5100418787- Perovskite Materials and Applications
- Advanced Photocatalysis Techniques
- Advanced Chemical Physics Studies
- TiO2 Photocatalysis and Solar Cells
- Quantum Dots Synthesis And Properties
- Spectroscopy and Quantum Chemical Studies
- Conducting polymers and applications
- Photochemistry and Electron Transfer Studies
- Laser-Matter Interactions and Applications
- Molecular Junctions and Nanostructures
- Luminescence and Fluorescent Materials
- Organic Light-Emitting Diodes Research
- Advanced Fiber Laser Technologies
- Organic Electronics and Photovoltaics
- Mass Spectrometry Techniques and Applications
- Spectroscopy and Laser Applications
- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Synthesis and Properties of Aromatic Compounds
- Magnetic properties of thin films
- Magnetism in coordination complexes
- Gas Sensing Nanomaterials and Sensors
- Copper-based nanomaterials and applications
- ZnO doping and properties
- Analytical Chemistry and Sensors
Chinese Academy of Sciences
2004-2025
Czech Academy of Sciences, Institute of Physics
2025
Southwest University of Science and Technology
2022-2024
Chongqing Technology and Business University
2024
RIKEN
2020-2024
Joint Laboratory for Extreme Conditions Matter Properties
2022-2024
China General Nuclear Power Corporation (China)
2023-2024
Qiqihar University
2004-2024
Tianjin Children's Hospital
2024
Tianjin University
2016-2024
Herein we report the synthesis and time-resolved spectroscopic characterization of a homoleptic Fe(ii) complex exhibiting record (3)MLCT lifetime 26 ps promoted by benzimidazolylidene-based ligands. Time dependent density functional molecular modeling triplet excited state manifold clearly reveals that, at equilibrium geometries, lowest (3)MC lies higher in energy than one. This unprecedented energetic reversal series iron complexes, with stabilization charge-transfer state, opens up new...
Abstract Herein, we report a homoleptic iron complex bearing tridentate bis‐carbene (CNC) ligands designed for sensitization of TiO 2 photoanodes. Its excited state has been characterized by ultra‐fast transient spectroscopy and time‐dependent density functional theory (TD‐DFT) computations, which reveal record triplet metal‐to‐ligand charge‐transfer ( 3 MLCT) excited‐state lifetime (16 ps). The new dye was efficiently chemisorbed on promoted electron injection photocurrent generation in...
Abstract Halide substitution in phenethylammonium spacer cations (X‐PEA + , X = F, Cl, Br) is a facile strategy to improve the performance of PEA based perovskite solar cells (PSCs). However, power conversion efficiency (PCE) X‐PEA quasi‐2D (Q‐2D) PSCs still unsatisfactory and underlying mechanisms are debate. Here, in‐depth study on impact halide crystal orientation multi‐phase distribution films reported. The eliminates n 1 2D thus leads perpendicular orientation. Furthermore, nucleation...
Abstract Deep mineralization of low concentration toluene (C 7 H 8 ) is one the most significant but challenging reactions in photocatalysis. It generally assumed that hydroxyl radicals (⋅OH) as main reactive species contribute to enhanced photoactivity, however, it remains ambiguous at this stage. Herein, a S‐scheme ZnSn(OH) 6 ‐based heterojunction with AlOOH water resistant surface layer situ designed for tuning free radical and achieving deep C . By employing combination DRIFTS materials...
Abstract Deep mineralization of low concentration toluene (C 7 H 8 ) is one the most significant but challenging reactions in photocatalysis. It generally assumed that hydroxyl radicals (⋅OH) as main reactive species contribute to enhanced photoactivity, however, it remains ambiguous at this stage. Herein, a S‐scheme ZnSn(OH) 6 ‐based heterojunction with AlOOH water resistant surface layer situ designed for tuning free radical and achieving deep C . By employing combination DRIFTS materials...
A Z-scheme full-spectrum-activated upconversion heterostructural photocatalyst was designed and synthesized, which exhibited superior photocatalytic activity than commercial P25 by 15 fold.
Nanostructured dye-sensitized solar cells (DSSCs) are promising photovoltaic devices because of their low cost and transparency. Ruthenium polypyridine complexes have long been considered as lead sensitizers for DSSCs, allowing them to reach up 11% conversion efficiency. However, ruthenium suffers from serious drawbacks potentially limiting its widespread applicability, mainly related potential toxicity scarcity. This has motivated continuous research efforts develop valuable alternatives...
The shape of the lowest singlet excited-state (S1) energy profile is primary importance in photochemistry and related materials science areas. Here we demonstrate a new approach for controlling S1 which relies on tuning level aromaticity (ESA). In series fluorescent π-expanded oxepins, decrease accompanying bent-to-planar conformational change becomes less pronounced with lower ESA levels. Stabilization energies following from were quantitatively estimated to be 10–20 kcal/mol using...
A new type of nonstoichiometric rutile titanium dioxide (TiO2) film with around 15 at% oxygen vacancies homogeneously distributed throughout the bulk was prepared. The resultant films, when used as a photoelectrode, showed photoelectrochemical water splitting activity 1.7 times that stoichiometric TiO2 at bias 0.9 V vs. Ag/AgCl. This is believed to result from synergistic effect improved transport and surface transfer charge carriers compared TiO2.
Abstract All‐inorganic perovskite quantum dots (PQDs) have drawn great attention recently, which are newcomer materials for banknotes protection. Herein, CsPbX 3 (X = Cl, Br, I) PQDs synthesized via one‐step hot‐injection method. It is interesting to find that the fluorescent colors can be tuned over wide visible spectra region of 506 and 636 nm by changing ratio halide ions. Then, with strong fluorescence intensity, narrow full width at half maximum 15–35 nm, high yields 86.6% formulated as...
The first combined theoretical and photovoltaic characterization of both homoleptic heteroleptic Fe(ii)-carbene sensitized photoanodes in working dye solar cells (DSSCs) has been performed. Three new Fe(ii)-NHC sensitizers have synthesized, characterized tested. Despite an improved interfacial charge separation comparison to the compounds, complexes did not show boosted performances. ab initio quantitative analysis electron hole transfers measured data clearly evidenced fast recombination...
We investigated the translational and rotational dynamics of water molecules in mesoporous silica materials MCM-41-S MCM-48-S using incoherent quasielastic neutron scattering technique. The range wave vector transfers Q covered measurements was from 0.27 to 1.93 Å−1 broad enough detect both contributions scattering. used relaxing-cage models for motions which we developed earlier, analyze QENS spectra a supercooled 250 280 K. results show marked slowing down relaxation times, an increasing...
Abstract A series of metal‐free organic donor–π bridge–acceptor dyes are studied computationally using density functional theory (DFT) and time‐dependent DFT (TDDFT) approaches to explore their potential performances in dye‐sensitized solar cells (DSSCs). Taking triphenylamine (TPA) cyanoacrylic acid moieties as donor acceptor units, respectively, the effects different substituents π linkers TPA‐based on energy conversion efficiency DSSCs theoretically evaluated through optimized geometries,...
Self-assembly of manganese phthalocyanine (MnPc) and iron (FePc) molecules on Pb(111) Au(111) surfaces is investigated by means low-temperature scanning tunneling microscopy density functional theory calculations. Both metal (MPc) form ordered close-packed islands with different detail superstructures. In contrast, dispersive single are observed for both MPc Au(111). The self-assembling behaviors originate from a subtle balance between molecule–molecule molecule–substrate interactions tuned...