化学
光敏剂
三苯胺
铱
光化学
光催化
香豆素
催化作用
组合化学
有机化学
作者
Yue Wang,Yifan Huang,Shuang Chen,Jian Gao,Yifan Zhang,Ying-Chen Duan,Peizhen Deng
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2023-05-04
卷期号:62 (19): 7212-7219
被引量:3
标识
DOI:10.1021/acs.inorgchem.2c04471
摘要
Developing a photosensitizer with high efficiency and long-term stability for photocatalytic hydrogen evolution is highly desirable yet remains a challenge. Herein, a novel Ir(III) complex-based photosensitizer (Ir3) bearing coumarin and triphenylamine groups is designed. Ir3 exhibits record activity and durability among reported transition metal complexes for photocatalytic hydrogen evolution, with a TON of 198,363 and a duration of 214 h. The excellent photocatalytic performance of Ir3 can be attributed to the synergistic effect of coumarin and triphenylamine, which improves the visible light absorption, charge separation, and electron transfer capacity of photosensitizers. This is an efficient and long-lived Ir(III) photosensitizer constructed on the basis of a synergistic approach, which could provide a new insight for the development of high-performance Ir(III) photosensitizers at the molecular level.
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