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Photoinduced interfacial electron injection in RuN3-TiO2 thin films: Resolving picosecond timescale injection from the triplet state of the protonated and deprotonated dyes

Pellnor, Mathias LU ; Myllyperkio, P.; Korppi-Tommola, J.; Yartsev, Arkady LU and Sundström, Villy LU (2008) In Chemical Physics Letters 462(4-6). p.205-208
Abstract
Using femtosecond transient absorption spectroscopy we have studied light-induced electron injection from the sensitizer RuN3 and its partly deprotonated tetrabutylamonium salt to nano-structured TiO2 film. Previous studies have suggested significant differences in electron injection dynamics for these dyes and some results have indicated that aggregation of the sensitizer may lead to slow injection. By measuring transient absorption spectra and kinetics of RuN3 and RuN3-TBA in solution and attached to TiO2 film we show that the electron injection dynamics are very similar for the two forms of the dye and that aggregation has only moderate effects on the electron transfer dynamics. (c) 2008 Elsevier B. V. All rights reserved.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Chemical Physics Letters
volume
462
issue
4-6
pages
205 - 208
publisher
Elsevier
external identifiers
  • wos:000258830900013
  • scopus:50349085803
ISSN
0009-2614
DOI
10.1016/j.cplett.2008.07.066
language
English
LU publication?
yes
id
3a67b88f-92ec-4707-8790-d0834122d88b (old id 1247855)
date added to LUP
2008-11-10 11:04:11
date last changed
2017-09-03 04:00:38
@article{3a67b88f-92ec-4707-8790-d0834122d88b,
  abstract     = {Using femtosecond transient absorption spectroscopy we have studied light-induced electron injection from the sensitizer RuN3 and its partly deprotonated tetrabutylamonium salt to nano-structured TiO2 film. Previous studies have suggested significant differences in electron injection dynamics for these dyes and some results have indicated that aggregation of the sensitizer may lead to slow injection. By measuring transient absorption spectra and kinetics of RuN3 and RuN3-TBA in solution and attached to TiO2 film we show that the electron injection dynamics are very similar for the two forms of the dye and that aggregation has only moderate effects on the electron transfer dynamics. (c) 2008 Elsevier B. V. All rights reserved.},
  author       = {Pellnor, Mathias and Myllyperkio, P. and Korppi-Tommola, J. and Yartsev, Arkady and Sundström, Villy},
  issn         = {0009-2614},
  language     = {eng},
  number       = {4-6},
  pages        = {205--208},
  publisher    = {Elsevier},
  series       = {Chemical Physics Letters},
  title        = {Photoinduced interfacial electron injection in RuN3-TiO2 thin films: Resolving picosecond timescale injection from the triplet state of the protonated and deprotonated dyes},
  url          = {http://dx.doi.org/10.1016/j.cplett.2008.07.066},
  volume       = {462},
  year         = {2008},
}