Issue 41, 2020

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

Abstract

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.

Graphical abstract: Electrochromic Os-based metallo-supramolecular polymers: electronic state tracking by in situ XAFS, IR, and impedance spectroscopies

Supplementary files

Article information

Article type
Paper
Submitted
10 Apr 2020
Accepted
09 Jun 2020
First published
29 Jun 2020
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2020,10, 24691-24696

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

T. Yoshida, M. K. Bera, Y. S. L. V. Narayana, S. Mondal, H. Abe and M. Higuchi, RSC Adv., 2020, 10, 24691 DOI: 10.1039/D0RA03236K

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