Photo- and electrochemical properties of linked ferrocene and viologen donor-acceptor-type molecules and their application to electrochromic devices

Yoshinori Nishikitani, S. Uchida, T. Asano, M. Minami, S. Oshima, K. Ikai, T. Kubo

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

This is a report on the electrochemical and optical properties of a new type of linked system of ferrocene (Fc) and viologen (V2+) units, Fc-(CH2)4-V2+-R (Fc-V2+). The cyclic voltammogram and absorption spectra have revealed that Fc and V2+ units are little effected by the nonconjugated bridge, -(CH2) 4-, since differences in electrochemical and optical properties between linked and nonlinked Fc and V2+ systems are not observed, in that both systems have similar redox and absorption characteristics. The linked Fc-V2+ system, however, showed higher UV resistance. Using Fc-V 2+ dye and a polymeric solid electrolyte (PSE), we succeeded in fabricating a large-area quasi-solid-state electrochromic cell (EC cell). This cell has shown excellent homogeneous coloration, and its EC properties can be explained in a simple graphical way based on the diffusion of redox species Fc-V+ and Fc+-V2+. Further, the EC cell fabricated with Fc-V2+ has shown excellent durability and was shown to be well-suited for all outdoor applications.

Original languageEnglish
Pages (from-to)4372-4377
Number of pages6
JournalJournal of Physical Chemistry C
Volume112
Issue number11
DOIs
Publication statusPublished - 2008 Mar 20
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

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