Fabrication and photoelectrochemical properties of electron donor-acceptor assemblies via titanium oxide interlayers

Satoshi Nitahara, Nao Terasaki, Tsuyoshi Akiyama, Sunao Yamada

Research output: Contribution to journalConference article

10 Citations (Scopus)

Abstract

Ultrathin molecular films consisting of electron donor (D)-acceptor (A) pairs via titanium oxide coordinative bonding have been fabricated on an indium-tinoxide electrode, by using the techniques of self-assembly and surface sol-gel process. Porphyrin and tris (2,2′-bipyridine) ruthenium (II) were used as D, while viologen as A, respectively. The degree of assembling of D and A were characterized by electrochemical and absorption measurements. In the case of the porphyrin-viologen pair, photocurrent generation based on photoinduced electron-transfer was realized, and multilayer formation of porphyrin increased the photocurrents. On the other hand, the ruthenium (II) complex-viologen pair showed very poor photocurrent responses, probably due to much poorer light absorptivity as compared with porphyrin.

Original languageEnglish
Pages (from-to)230-234
Number of pages5
JournalThin Solid Films
Volume438-439
DOIs
Publication statusPublished - Aug 22 2003
EventThe 5th International Conference on Nano-Molecular Electronics - Kobe, Japan
Duration: Dec 10 2002Dec 12 2002

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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