Structural dynamics studies on photoinduced interfacial electron transfer using ultrafast X-ray spectroscopy

Xiaoyi Zhang*, Grigory Smolentse, Sophie Canton, Jianchang Guo, Villy Sundström, Lin X Chen, Klaus Attenkofer, Charles Kurtz, Guy Jennings

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

XTA (X-ray transient absorption) spectroscopy has been used to probe the transient structure during interfacial electron transfer between photo-sensitizer and semiconductor nanocrystals. Two sample systems have been studied, Ru(dcbpy)2(NCS)2 and Os(dcbpy)2(CN)2 (dcbpy = bis(4,4'-dicarboxy-2,2'-bipyridyl) adsorbed to TiO2 nanoparticle surface. The photoexcited Ruthenium or Osmium polypyridyl photosensitizers inject electrons to conduction band of TiO2 nanoparticle, resulting in interfacial charge-transfer state. Both the electronic configuration and molecular structure changes of Ruthenium and Osmium complexes in the charge-separated state have been observed.

Original languageEnglish (US)
Title of host publicationInternational Conference on Ultrafast Structural Dynamics, ICUSD 2012
PublisherOptical Society of American (OSA)
ISBN (Print)9781557529398
StatePublished - Jan 1 2012
EventInternational Conference on Ultrafast Structural Dynamics, ICUSD 2012 - Berlin, Germany
Duration: Mar 19 2012Mar 21 2012

Other

OtherInternational Conference on Ultrafast Structural Dynamics, ICUSD 2012
CountryGermany
CityBerlin
Period3/19/123/21/12

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials
  • Building and Construction

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    Zhang, X., Smolentse, G., Canton, S., Guo, J., Sundström, V., Chen, L. X., Attenkofer, K., Kurtz, C., & Jennings, G. (2012). Structural dynamics studies on photoinduced interfacial electron transfer using ultrafast X-ray spectroscopy. In International Conference on Ultrafast Structural Dynamics, ICUSD 2012 Optical Society of American (OSA).