Study of anisotropic interfacial electron transfer across a semiconductor/solution interface by time-resolved EPR spectroscopy

Kimio Akiyama, Shinji Hashimoto, Sachiko Tojo, Tadaaki Ikoma, Shozo Tero-Kubota, Tetsuro Majima

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

(Figure Presented) Xanthene dyes absorbed onto colloidal TiO2 exhibit spin-polarized EPR spectra when excited with pulses of visible light at low temperatures (see schematic representation). Analysis of the spectra enables the range of distances between the electron and the dye radical cation as well as their relative orientations to be determined. Furthermore, an orientational selectivity in electron transfer across the semiconductor nanoparticle is observed.

Original languageEnglish
Pages (from-to)3591-3594
Number of pages4
JournalAngewandte Chemie - International Edition
Volume44
Issue number23
DOIs
Publication statusPublished - 2005 Jun 6

Keywords

  • EPR spectroscopy
  • Electron transfer
  • Nanoparticles
  • Radical pair
  • Semiconductors

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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