A Crystalline Copper(II) Coordination Polymer for the Efficient Visible-Light-Driven Generation of Hydrogen
| Autor: | Thomas C. W. Mak, Mei Zhang, Shuang-Quan Zang, Ru-Bo Pei, Donghui Wei, Qian Wang, Yao-Ting Fan, Xi-Yan Dong |
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| Rok vydání: | 2015 |
| Předmět: |
Coordination polymer
Stacking chemistry.chemical_element General Medicine 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Copper Redox Catalysis 0104 chemical sciences Rhodamine chemistry.chemical_compound chemistry Photocatalysis Cyclic voltammetry 0210 nano-technology |
| Zdroj: | Angewandte Chemie (International ed. in English). 55(6) |
| ISSN: | 1521-3773 |
| Popis: | A crystalline coordination polymer (CP) photocatalyst (Cu-RSH) which combines redox-active copper centers with photoactive rhodamine-derived ligands remains stable in acid and basic solutions from pH 2 to 14, and efficiently catalyzes dihydrogen evolution at a maximum rate of 7.88 mmol g(-1) h(-1) in the absence of a mediator and a co-catalyst. Cyclic voltammetry, control experiments, and DFT calculations established that copper nodes with open coordination sites and favorable redox potentials, aided by spatially ordered stacking of rhodamine-based linkers, account for the high catalytic performance of Cu-RSH. Emission quenching, time-resolved fluorescence decay, and transient photocurrent experiments disclosed the charge separation and transfer process in the catalytic system. The present study demonstrates the potential of crystalline copper CPs for the practical utilization of light. |
| Databáze: | OpenAIRE |
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