Effect of immobilized electron relay on the interfacial photoinduced electron transfer at a layered inorganic-organic composite film on gold

Takuya Nakanishi, Bunsho Ohtani, Kohei Uosaki*

*この研究の対応する著者

研究成果: Article査読

20 被引用数 (Scopus)

抄録

A layered composite film of CdS nanoparticles and a 1,6-hexanedithiol self-assembled monolayer (SAM) fabricated on a gold substrate was modified with 11-ferrocenylundecanethiol (FcC11SH), which is expected to act as an electron relay, by immersion into its hexane solution. X-ray photoelectron spectroscopy and electrochemical measurements revealed that FcC11S(H) is mainly located on the gold surface, and partly on the CdS nanoparticle layer. The FcC11SH modification induced a significant difference in the photoelectrochemical characteristics of the composite film. The photocurrent increased and decreased at potentials more positive and negative than the redox potential of the ferrocene moiety, respectively, leading to a positive shift in the onset potential for the photoinduced anodic current. A change in the transient photoresponse was also observed. Efficient electron transfer by the ferrocene moiety immobilized between the gold substrate and the CdS nanoparticle layer accounts reasonably for the behavior mentioned above.

本文言語English
ページ(範囲)229-234
ページ数6
ジャーナルJournal of Electroanalytical Chemistry
455
1-2
出版ステータスPublished - 1998 9月 15
外部発表はい

ASJC Scopus subject areas

  • 化学工学(全般)
  • 分析化学
  • 電気化学

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