期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 22, 页码 6627-6631出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201409442
关键词
electron density; hydrogen production; iodide ligands; photocatalysis; platinum
资金
- German Research Association [DFG SFB 583, GRK 1626]
- COST Action [CM1202, PERSPECT-H2O]
- European Union [321971]
A molecular photocatalyst consisting of a Ru-II photocenter, a tetrapyridophenazine bridging ligand, and a PtX2 (X=Cl or I) moiety as the catalytic center functions as a stable system for light-driven hydrogen production. The catalytic activity of this photochemical molecular device (PMD) is significantly enhanced by exchanging the terminal chlorides at the Pt center for iodide ligands. Ultrafast transient absorption spectroscopy shows that the intramolecular photophysics are not affected by this change. Additionally, the general catalytic behavior, that is, instant hydrogen formation, a constant turnover frequency, and stability are maintained. Unlike as observed for the Pd analogue, the presence of excess halide does not affect the hydrogen generation capacity of the PMD. The highly improved catalytic efficiency is explained by an increased electron density at the Pt catalytic center, this is confirmed by DFT studies.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据