Electrochromic Os-based metallo-supramolecular polymers: Electronic state tracking by: In situ XAFS, IR, and impedance spectroscopies

Takefumi Yoshida, Manas Kumar Bera, Yemineni S.L.V. Narayana, Sanjoy Mondal, Hitoshi Abe, Masayoshi Higuchi

研究成果: Article査読

2 被引用数 (Scopus)

抄録

In this study, the electronic states of Os-based metallo-supramolecular polymers (poly(OsL)2+) during electrochromism were tracked by in situ X-ray absorption fine structure (XAFS), infrared (IR), and impedance spectroscopies. The XAFS spectra suggested electronic charge migration in the polymer, and the in situ spectra revealed reversible changes caused by electrochemical redox reactions. The IR spectra of the polymers showed an IVCT band, and we also confirmed the reversible changes by applying a voltage to the redox cell. During the impedance measurements, we found a drastic decrease in the charge transfer resistance (RCT) of the polymer films near the electrochemical redox potential.

本文言語English
ページ(範囲)24691-24696
ページ数6
ジャーナルRSC Advances
10
41
DOI
出版ステータスPublished - 2020 6月 29

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)

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