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J Am Chem Soc. 2013 Mar 6;135(9):3383-6. doi: 10.1021/ja400178g. Epub 2013 Feb 25.

Charge transfer dynamics between photoexcited CdS nanorods and mononuclear Ru water-oxidation catalysts.

Author information

1
Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States.

Abstract

We describe the charge transfer interactions between photoexcited CdS nanorods and mononuclear water oxidation catalysts derived from the [Ru(bpy)(tpy)Cl](+) parent structure. Upon excitation, hole transfer from CdS oxidizes the catalyst (Ru(2+) → Ru(3+)) on a 100 ps to 1 ns timescale. This is followed by 10-100 ns electron transfer (ET) that reduces the Ru(3+) center. The relatively slow ET dynamics may provide opportunities for the accumulation of multiple holes at the catalyst, which is necessary for water oxidation.

PMID:
23406271
DOI:
10.1021/ja400178g
[Indexed for MEDLINE]

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