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Artificial Photocatalytic System Using Polydiacetylene-(-NH-phen)Ru(bpy)(2) for Cofactor Regeneration and CO2 Reduction

Title
Artificial Photocatalytic System Using Polydiacetylene-(-NH-phen)Ru(bpy)(2) for Cofactor Regeneration and CO2 Reduction
Authors
Kim, SoojinLee, SongyiAnjong, Tikum FlorenceJang, Ha YoonKim, Ji-YeongLee, ChihoPark, SungnamLee, Hye JinYoon, JuyoungKim, Jinheung
Ewha Authors
윤주영김진흥
SCOPUS Author ID
윤주영scopus; 김진흥scopus
Issue Date
2016
Journal Title
JOURNAL OF PHYSICAL CHEMISTRY C
ISSN
1932-7447JCR Link
Citation
vol. 120, no. 50, pp. 28407 - 28414
Publisher
AMER CHEMICAL SOC
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
For the practical use of a photobioreactor for artificial photosynthesis, efficient visible light-absorbing materials have to link reduction and oxidation catalysts for an efficient energy flow. As a step toward this goal of an NADH regeneration system and enzymatic production of solar fuels from CO2, we report the synthesis of a new polydiacetylene compound that is covalently connected with [Ru(phen-NH2) (bpy)(2)](2+) (bpy =2,2'-bipyridine, phen =1,10-phenonthroline-5-amine). The [(bpy)(2)Ru(phen-NH-)]-polydiacetylene absorbed a wide range of visible light because of the presence of two chromophores, the Ru complex and polydiacetylene. The polyacetylene backbone was converted from blue to red by conformational changes under the catalytic reaction conditions in a buffer solution. The electron transfer from the photoexcited [ku(phen)(bpy)(2)](2+) to the polydiacetylene backbone was observed. In a visible light-driven photocatalytic NAD+ reduction by (cyclopentadienyl)Rh(bpy)(H2O)(2+) With [(bpy),Ru(phen-NH)]-polydiacetylene, NADH was regenerated, and the reactivity using Ru(bpy),(phen-NH)-polydiacetyleue was enhanced relative to control experiments using only [Ru(phen)(bpy)(2)](2+) or polydiacetylene. The consecutive carbon dioxide reduction coupled with formate dehydrogenase was carried out to utilize the in situ photoregenerated NADH catalytically. The catalytic condition using [(bpy),Ru(phen-NH)]-polydiacetylene also showed much higher reactivity than the controls.
DOI
10.1021/acs.jpcc.6b08532
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자연과학대학 > 화학·나노과학전공 > Journal papers
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