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Title: Unusual Internal Electron Transfer in Conjugated Radical Polymers

Journal Article · · Angewandte Chemie (International Edition)

Abstract Nitroxide‐containing organic radical polymers (ORPs) have captured attention for their high power and fast redox kinetics. Yet a major challenge is the polymer's aliphatic backbone, resulting in a low electronic conductivity. Recent attempts that replace the aliphatic backbone with a conjugated one have not met with success. The reason for this is not understood until now. We examine a family of polythiophenes bearing nitroxide radical groups, showing that while both species are electrochemically active, there exists an internal electron transfer mechanism that interferes with stabilization of the polymer's fully oxidized form. This finding directs the future design of conjugated radical polymers in energy storage and electronics, where careful attention to the redox potential of the backbone relative to the organic radical species is needed.

Research Organization:
Texas A & M Univ., College Station, TX (United States). Texas A & M Engineering Experiment Station
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Welch Foundation
Grant/Contract Number:
SC0014006; A-1766
OSTI ID:
1533114
Alternate ID(s):
OSTI ID: 1378296
Journal Information:
Angewandte Chemie (International Edition), Vol. 56, Issue 33; ISSN 1433-7851
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 44 works
Citation information provided by
Web of Science

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Cited By (5)

Uncovering the Shuttle Effect in Organic Batteries and Counter‐Strategies Thereof: A Case Study of the N , N′ ‐Dimethylphenazine Cathode journal January 2020
Diblock copolymers consisting of a redox polymer block based on a stable radical linked to an electrically conducting polymer block as cathode materials for organic radical batteries journal January 2019
Polynitroxide-grafted-graphene: a superior cathode for lithium ion batteries with enhanced charge hopping transportation journal January 2019
Chain rigidity modification to promote the electrochemical performance of polymeric battery electrode materials journal January 2019
Uncovering the Shuttle Effect in Organic Batteries and Counter‐Strategies Thereof: A Case Study of the N , N′ ‐Dimethylphenazine Cathode journal January 2020