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Architecture of supramolecular metal complexes for photocatalytic CO2 reduction: III: Effects of length of alkyl chain connecting photosensitizer to catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
27312 44015 2009 6 PDF Available
Title
Architecture of supramolecular metal complexes for photocatalytic CO2 reduction: III: Effects of length of alkyl chain connecting photosensitizer to catalyst
Abstract

New Ru(II)–Re(I) binuclear complexes [{Ru(dmb)2}-LL-{Re(CO)3Cl}]2+(dmb = 4,4′-dimethyl-2,2′-bipyridine) with 1,2-bis(4′-methyl-[2,2′]bipyridinyl-4-yl)-ethane (MebpyC2H4Mebpy), 1,4-bis(4′-methyl-[2,2′]bipyridinyl-4-yl)-butane (MebpyC4H8Mebpy), and 1,6-bis(4′-methyl-[2,2′]bipyridinyl-4-yl)-hexane (MebpyC6H12Mebpy) as bridge ligands (LL) have been synthesized, and their photocatalytic activity for CO2 reduction has been investigated. The most efficient photocatalyst had MebpyC2H4Mebpy as the bridge ligand, but no difference in photocatalysis was observed between the diads with MebpyC4H8Mebpy and MebpyC6H12Mebpy. Weak interaction between the Ru and Re sites was observed only through the MebpyC2H4Mebpy ligand but not through the other bridge ligands. This interaction induces a higher reductive quenching efficiency of the 3MLCT excited state of the diad with MebpyC2H4Mebpy by the reductant, BNAH, and consequently the quantum yield of CO2 reduction is higher.

Keywords
Photocatalyst; CO2 reduction; Supramolecule; Metal complex
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Architecture of supramolecular metal complexes for photocatalytic CO2 reduction: III: Effects of length of alkyl chain connecting photosensitizer to catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 207, Issue 1, 5 September 2009, Pages 109–114
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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