Facile fabrication of photoelectrochemical assemblies consisting of gold nanoparticles and a tris(2,2′-bipyridine)ruthenium(II)-viologen linked thiol

Yutaka Kuwahara, Tsuyoshi Akiyama, Sunao Yamada

Research output: Contribution to journalArticle

70 Citations (Scopus)

Abstract

Facile fabrication of a modified electrode with gold nanoparticles and a tris(2,2′-bipyridine)ruthenium(II)-viologen linked thiol (RuVS) is described. First, the gold nanoparticles (14 ± 1 nm) were precipitated onto the gold electrode in an aqueous solution. Then, this electrode was immersed into a acetonitrile solution containing RuVS, to immobilize it via Au-S bonding. Scanning electron micrographs show agglomeration and island formation of the gold particles on the electrode and 1-3 μm thickness of the deposition. In cyclic voltammetry, a redox couple due to one-electron reduction of the viologen moiety was clearly observed and its intensity increased with increasing the extent of deposition. The anodic photocurrent from the modified electrode ascribed to ruthenium-complex-sensitized redox cycles was clearly observed and was more than 15-fold larger as compared with that of the flat electrode (without gold particles).

Original languageEnglish
Pages (from-to)5714-5716
Number of pages3
JournalLangmuir
Volume17
Issue number19
DOIs
Publication statusPublished - Sep 18 2001

Fingerprint

Viologens
Ruthenium
Sulfhydryl Compounds
thiols
Gold
assemblies
ruthenium
gold
Nanoparticles
Fabrication
nanoparticles
Electrodes
fabrication
electrodes
Electrons
agglomeration
Acetonitrile
Photocurrents
Cyclic voltammetry
acetonitrile

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Facile fabrication of photoelectrochemical assemblies consisting of gold nanoparticles and a tris(2,2′-bipyridine)ruthenium(II)-viologen linked thiol. / Kuwahara, Yutaka; Akiyama, Tsuyoshi; Yamada, Sunao.

In: Langmuir, Vol. 17, No. 19, 18.09.2001, p. 5714-5716.

Research output: Contribution to journalArticle

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