Journal
CHEMISTRY-AN ASIAN JOURNAL
Volume 5, Issue 8, Pages 1796-1803Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201000087
Keywords
electron transfer; hydrogen; iron; photochemistry; sensitizers
Categories
Funding
- Chinese Academy of Sciences, Solar Energy Initiative [KGCXZ-YW-389]
- National Science Foundation of China [20732007, 50973125]
- Ministry of Science and Technology of China [2006CB806105, 2007CB808004, 2009CB22008]
- Bureau for Basic Research of the Chinese Academy of Sciences
Ask authors/readers for more resources
To mimic [FeFe] hydrogenases (H(2)ases) in nature, molecular photocatalysts 1a, 1b, and 1c anchoring rhenium(1) complex S to one of the iron cores of [FeFe]-H(2)ases model complex C, have been constructed for H-2 generation by visible light in homogeneous solution. The time-dependence of H-2 evolution and a spectroscopic study demonstrate that the orientation of S and the specific bridge in 1a, 1b, and 1c are important both for the electron-transfer step from the excited S* to the catalytic C, and the formation of unprecedented long-lived charge separation for 1a (780 mu s), 1b, and 1c (>2 ms) in [FeFe]-H(2)ases mimics. The fast forward electron-transfer step from the excited S* to the catalytic C but the slow back electron-transfer step of the charge-recombination in the designed photocatalysts 1a, 1b, and 1c are reminiscent of the behavior of [FeFe]-H(2)ases in nature.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available