A Crystalline Copper(II) Coordination Polymer for the Efficient Visible-Light-Driven Generation of Hydrogen
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AbstractA 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 pH2 to 14, and efficiently catalyzes dihydrogen evolution at a maximum rate of 7.88mmolg(-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.
All Author(s) ListDong XY, Zhang M, Pei RB, Wang Q, Wei DH, Zang SQ, Fan YT, Mak TCW
Journal nameAngewandte Chemie International Edition
Year2016
Month2
Day5
Volume Number55
Issue Number6
PublisherWILEY-V C H VERLAG GMBH
Pages2073 - 2077
ISSN1433-7851
eISSN1521-3773
LanguagesEnglish-United Kingdom
Keywordscoordination polymer; copper; dyes; hydrogen; photochemistry; pigments
Web of Science Subject CategoriesChemistry; Chemistry, Multidisciplinary

Last updated on 2020-25-09 at 14:34