Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 136, Issue 36, Pages 12721-12729Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja506060u
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Funding
- Solar Fuel GmbH
- Austrian Science Fund (FWF) [P21045]
- European Union through the EFRE INTERREG IV ETC-AT-CZ program [M00146]
- German Research Foundation [DFG GRK1626]
- European Commission (COST action) [CM1202]
- Austrian Science Fund (FWF) [P 21045] Funding Source: researchfish
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A 2,2'-bipyridyl-containing poly(arylene-ethynylene)-alt-poly(arylene-vinylene) polymer, acting as a light-harvesting ligand system, was synthesized and coupled to an organometallic rhodium complex designed for photocatalytic NAD(+)/NADH reduction. The material, which absorbs over a wide spectral range, was characterized by using various analytical techniques, confirming its chemical structure and properties. The dielectric function of the material was determined from spectroscopic ellipsometry measurements. Photocatalytic reduction of nucleotide redox cofactors under visible light irradiation (390650 nm) was performed and is discussed in detail. The new metal-containing polymer can be used to cover large surface areas (e.g. glass beads) and, due to this immobilization step, can be easily separated from the reaction solution after photolysis. Because of its high stability, the polymer-based catalyst system can be repeatedly used under different reaction conditions for (photo)chemical reduction of NAD(+). With this concept, enzymatic, photo-biocatalytic systems for solar energy conversion can be facilitated, and the precious metal catalyst can be recycled.
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