Modular assembly of high-potential zinc porphyrin photosensitizers attached to TiO2 with a series of anchoring groups

Lauren A. Martini, Gary F. Moore, Rebecca L. Milot, Lawrence Z. Cai, Stafford W. Sheehan, Charles A. Schmuttenmaer, Gary W. Brudvig, Robert H. Crabtree

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

Efforts to improve the ease of assembly and robustness of photoanodes for light-driven water oxidation have led to the development of a modular assembly method for anchoring high-potential zinc porphyrins to TiO2 via coordination to surface-bound pyridine linkers. It is essential that the anchoring groups provide strong electronic coupling between the molecular dye and metal oxide surface for optimal electron injection and that they are robust under the operating conditions of the system. Here, four linker molecules functionalized with either carboxylate, phosphonate, acetylacetonate, or hydroxamate anchoring groups are compared for their relative water stability on TiO2. We also report the relative electron injection efficiencies, as measured by terahertz spectroscopy, for high-potential zinc porphyrins coordinated to TiO2 via pyridyl linkers with the series of anchoring groups.

Original languageEnglish
Pages (from-to)14526-14533
Number of pages8
JournalJournal of Physical Chemistry C
Volume117
Issue number28
DOIs
Publication statusPublished - Jul 18 2013

Fingerprint

Electron injection
Photosensitizing Agents
Photosensitizers
Porphyrins
porphyrins
Zinc
assembly
zinc
Terahertz spectroscopy
Organophosphonates
Water
Pyridine
Oxides
injection
Coloring Agents
Dyes
Metals
Oxidation
water
carboxylates

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

Cite this

Martini, L. A., Moore, G. F., Milot, R. L., Cai, L. Z., Sheehan, S. W., Schmuttenmaer, C. A., ... Crabtree, R. H. (2013). Modular assembly of high-potential zinc porphyrin photosensitizers attached to TiO2 with a series of anchoring groups. Journal of Physical Chemistry C, 117(28), 14526-14533. https://doi.org/10.1021/jp4053456

Modular assembly of high-potential zinc porphyrin photosensitizers attached to TiO2 with a series of anchoring groups. / Martini, Lauren A.; Moore, Gary F.; Milot, Rebecca L.; Cai, Lawrence Z.; Sheehan, Stafford W.; Schmuttenmaer, Charles A.; Brudvig, Gary W.; Crabtree, Robert H.

In: Journal of Physical Chemistry C, Vol. 117, No. 28, 18.07.2013, p. 14526-14533.

Research output: Contribution to journalArticle

Martini, LA, Moore, GF, Milot, RL, Cai, LZ, Sheehan, SW, Schmuttenmaer, CA, Brudvig, GW & Crabtree, RH 2013, 'Modular assembly of high-potential zinc porphyrin photosensitizers attached to TiO2 with a series of anchoring groups', Journal of Physical Chemistry C, vol. 117, no. 28, pp. 14526-14533. https://doi.org/10.1021/jp4053456
Martini, Lauren A. ; Moore, Gary F. ; Milot, Rebecca L. ; Cai, Lawrence Z. ; Sheehan, Stafford W. ; Schmuttenmaer, Charles A. ; Brudvig, Gary W. ; Crabtree, Robert H. / Modular assembly of high-potential zinc porphyrin photosensitizers attached to TiO2 with a series of anchoring groups. In: Journal of Physical Chemistry C. 2013 ; Vol. 117, No. 28. pp. 14526-14533.
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