Anchoring group and auxiliary ligand effects on the binding of ruthenium complexes to nanocrystalline TiO2 photoelectrodes

Kristine Kilså; Elizabeth I. Mayo; Bruce S. Brunschwig; Harry B. Gray; Nathan S. Lewis; Jay R. Winkler

doi:10.1021/jp0369995

Anchoring group and auxiliary ligand effects on the binding of ruthenium complexes to nanocrystalline TiO₂ photoelectrodes

Kristine Kilså, Elizabeth I. Mayo, Bruce S. Brunschwig, Harry B. Gray, Nathan S. Lewis, Jay R. Winkler

California Institute of Technology

Research output: Contribution to journal › Article

112 Citations (Scopus)

Abstract

An investigation of five ruthenium complexes with the thermodynamics and kinetics of binding to nanocrystalline TiO₂ was made. The ruthenium complexes were structurally different in the number of anchoring carboxy groups attached to coordinated bipyridyl ligands and in the number of auxillary ligands. All the available carboxyl groups were used by the complexes in the dry state with only one monocarboxy or dicarboxy ligand to bind to the surface. The structural difference between the complexes in the five dyes yielded similar maximum coverages ( >100nmol cm^-2) on nanocrystalline TiO₂ electrodes and exhibited different binding constants.

Original language	English
Pages (from-to)	15640-15651
Number of pages	12
Journal	Journal of Physical Chemistry B
Volume	108
Issue number	40
DOIs	https://doi.org/10.1021/jp0369995
Publication status	Published - Oct 7 2004

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ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

Cite this

Kilså, K., Mayo, E. I., Brunschwig, B. S., Gray, H. B., Lewis, N. S., & Winkler, J. R. (2004). Anchoring group and auxiliary ligand effects on the binding of ruthenium complexes to nanocrystalline TiO₂ photoelectrodes. Journal of Physical Chemistry B, 108(40), 15640-15651. https://doi.org/10.1021/jp0369995

Anchoring group and auxiliary ligand effects on the binding of ruthenium complexes to nanocrystalline TiO₂ photoelectrodes. / Kilså, Kristine; Mayo, Elizabeth I.; Brunschwig, Bruce S.; Gray, Harry B.; Lewis, Nathan S.; Winkler, Jay R.

In: Journal of Physical Chemistry B, Vol. 108, No. 40, 07.10.2004, p. 15640-15651.

Research output: Contribution to journal › Article

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10.1021/jp0369995