钴二氢卟吩配合物光催化抗坏血酸析氢中一光子双电子过程的机理
Mechanism of a one-photon two-electron process in photocatalytic hydrogen evolution from ascorbic acid with a cobalt chlorin complex.
作者信息
Aoi Shoko, Mase Kentaro, Ohkubo Kei, Fukuzumi Shunichi
机构信息
Department of Material and Life Science, Graduate School of Engineering, Osaka University, ALCA and SENTAN, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan.
出版信息
Chem Commun (Camb). 2015 Oct 21;51(82):15145-8. doi: 10.1039/c5cc05064b. Epub 2015 Sep 1.
A one-photon two-electron process was made possible in photocatalytic H2 evolution from ascorbic acid with a cobalt(II) chlorin complex [Co(II)(Ch)] via electron transfer from ascorbate to the excited state of Ru(bpy)3 followed by electron transfer from Ru(bpy)3 to Co(II)(Ch) with proton to give the hydride complex, which reacts with proton to produce H2. Co(III)(Ch) was reduced by ascorbate to reproduce Co(II)(Ch).
在以钴（II）二氢卟吩配合物[Co（II）（Ch）]从抗坏血酸光催化析氢过程中，通过抗坏血酸盐向[Ru（bpy）3]（2 +）的激发态进行电子转移，随后[Ru（bpy）3]（+）向Co（II）（Ch）进行电子转移并伴随质子转移生成氢化物配合物，该氢化物配合物再与质子反应生成H2，从而实现了单光子双电子过程。抗坏血酸盐将[Co（III）（Ch）]（+）还原以再生Co（II）（Ch）。
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