Linker Length-Dependent Electron-Injection Dynamics of Trimesitylporphyrins on SnO2 Films

Shin Hee Lee, Kevin P. Regan, Svante Hedström, Adam J. Matula, Subhajyoti Chaudhuri, Robert H. Crabtree, Victor S. Batista, Charles A. Schmuttenmaer, Gary W Brudvig

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Electron-injection dynamics of dye-sensitized photoelectrochemical cells depend on the length of the linker connecting the molecular photosensitizer to the metal oxide electron acceptor. However, systematic studies of the effect of chromophore-oxide distance are scarce. Here we present the synthesis, characterization, spectroscopy, and computational modeling of electron-injection dynamics from free-base trimesitylporphyrins with varying linker lengths into tin(IV) oxide (SnO2). In each system, the porphyrin core and metal oxide film remain the same while only the linker binding the porphyrin to the carboxylate anchor group is varied. A length range spanning 8.5-17.2 Å is studied by employing phenylene, biphenylene, terphenylene, and benzanilide groups as the linker. We find a clear correlation between linker length and injection rates, providing insights that will be exploited in the optimization of dye-sensitized photoelectrochemical cells. (Chemical Equation Presented).

Original languageEnglish
Pages (from-to)22690-22699
Number of pages10
JournalJournal of Physical Chemistry C
Volume121
Issue number41
DOIs
Publication statusPublished - Oct 19 2017

Fingerprint

Photoelectrochemical cells
Electron injection
Porphyrins
Oxides
Coloring Agents
Dyes
Metals
injection
porphyrins
Photosensitizing Agents
Photosensitizers
metal oxides
oxides
Chromophores
dyes
Tin oxides
Anchors
Oxide films
electrons
Spectroscopy

ASJC Scopus subject areas

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

Cite this

Lee, S. H., Regan, K. P., Hedström, S., Matula, A. J., Chaudhuri, S., Crabtree, R. H., ... Brudvig, G. W. (2017). Linker Length-Dependent Electron-Injection Dynamics of Trimesitylporphyrins on SnO2 Films. Journal of Physical Chemistry C, 121(41), 22690-22699. https://doi.org/10.1021/acs.jpcc.7b07855

Linker Length-Dependent Electron-Injection Dynamics of Trimesitylporphyrins on SnO2 Films. / Lee, Shin Hee; Regan, Kevin P.; Hedström, Svante; Matula, Adam J.; Chaudhuri, Subhajyoti; Crabtree, Robert H.; Batista, Victor S.; Schmuttenmaer, Charles A.; Brudvig, Gary W.

In: Journal of Physical Chemistry C, Vol. 121, No. 41, 19.10.2017, p. 22690-22699.

Research output: Contribution to journalArticle

Lee, SH, Regan, KP, Hedström, S, Matula, AJ, Chaudhuri, S, Crabtree, RH, Batista, VS, Schmuttenmaer, CA & Brudvig, GW 2017, 'Linker Length-Dependent Electron-Injection Dynamics of Trimesitylporphyrins on SnO2 Films', Journal of Physical Chemistry C, vol. 121, no. 41, pp. 22690-22699. https://doi.org/10.1021/acs.jpcc.7b07855
Lee SH, Regan KP, Hedström S, Matula AJ, Chaudhuri S, Crabtree RH et al. Linker Length-Dependent Electron-Injection Dynamics of Trimesitylporphyrins on SnO2 Films. Journal of Physical Chemistry C. 2017 Oct 19;121(41):22690-22699. https://doi.org/10.1021/acs.jpcc.7b07855
Lee, Shin Hee ; Regan, Kevin P. ; Hedström, Svante ; Matula, Adam J. ; Chaudhuri, Subhajyoti ; Crabtree, Robert H. ; Batista, Victor S. ; Schmuttenmaer, Charles A. ; Brudvig, Gary W. / Linker Length-Dependent Electron-Injection Dynamics of Trimesitylporphyrins on SnO2 Films. In: Journal of Physical Chemistry C. 2017 ; Vol. 121, No. 41. pp. 22690-22699.
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AU - Matula, Adam J.

AU - Chaudhuri, Subhajyoti

AU - Crabtree, Robert H.

AU - Batista, Victor S.

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AU - Brudvig, Gary W

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N2 - Electron-injection dynamics of dye-sensitized photoelectrochemical cells depend on the length of the linker connecting the molecular photosensitizer to the metal oxide electron acceptor. However, systematic studies of the effect of chromophore-oxide distance are scarce. Here we present the synthesis, characterization, spectroscopy, and computational modeling of electron-injection dynamics from free-base trimesitylporphyrins with varying linker lengths into tin(IV) oxide (SnO2). In each system, the porphyrin core and metal oxide film remain the same while only the linker binding the porphyrin to the carboxylate anchor group is varied. A length range spanning 8.5-17.2 Å is studied by employing phenylene, biphenylene, terphenylene, and benzanilide groups as the linker. We find a clear correlation between linker length and injection rates, providing insights that will be exploited in the optimization of dye-sensitized photoelectrochemical cells. (Chemical Equation Presented).

AB - Electron-injection dynamics of dye-sensitized photoelectrochemical cells depend on the length of the linker connecting the molecular photosensitizer to the metal oxide electron acceptor. However, systematic studies of the effect of chromophore-oxide distance are scarce. Here we present the synthesis, characterization, spectroscopy, and computational modeling of electron-injection dynamics from free-base trimesitylporphyrins with varying linker lengths into tin(IV) oxide (SnO2). In each system, the porphyrin core and metal oxide film remain the same while only the linker binding the porphyrin to the carboxylate anchor group is varied. A length range spanning 8.5-17.2 Å is studied by employing phenylene, biphenylene, terphenylene, and benzanilide groups as the linker. We find a clear correlation between linker length and injection rates, providing insights that will be exploited in the optimization of dye-sensitized photoelectrochemical cells. (Chemical Equation Presented).

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