TY - JOUR

T1 - Overoxidation of Intrinsically Conducting Polymers

AU - Holze, Rudolf

PY - 2022/4/13

Y1 - 2022/4/13

N2 - Intrinsically conducting polymers may undergo significant changes of molecular structure and material properties when exposed to highly oxidizing conditions or very positive electrode potentials, commonly called overoxidation. The type and extent of the changes depend on the experimental conditions and chemical environment. They may proceed already at much lower rates at lower electrode potentials because some of the processes associated with overoxidation are closely related to more or less reversible redox processes employed in electrochemical energy conversion and electrochromism. These changes may be welcome for some applications of these polymers in sensors, extraction, and surface functionalization, but in many cases, the change of properties affects the performance of the material negatively, contributing to material and device degradation. This report presents published examples, experimental observations, and their interpretations in terms of both structural and of material property changes. Options to limit and suppress overoxidation are presented, and useful applications are described extensively.

AB - Intrinsically conducting polymers may undergo significant changes of molecular structure and material properties when exposed to highly oxidizing conditions or very positive electrode potentials, commonly called overoxidation. The type and extent of the changes depend on the experimental conditions and chemical environment. They may proceed already at much lower rates at lower electrode potentials because some of the processes associated with overoxidation are closely related to more or less reversible redox processes employed in electrochemical energy conversion and electrochromism. These changes may be welcome for some applications of these polymers in sensors, extraction, and surface functionalization, but in many cases, the change of properties affects the performance of the material negatively, contributing to material and device degradation. This report presents published examples, experimental observations, and their interpretations in terms of both structural and of material property changes. Options to limit and suppress overoxidation are presented, and useful applications are described extensively.

KW - ICP

KW - intrinsically conducting polymer

KW - oxidation

KW - polyaniline

KW - polypyrrole

KW - polythiophene

KW - radicals

UR - https://www.mendeley.com/catalogue/af7d59a2-f142-3f12-8fb9-cb971f69533f/

U2 - 10.3390/polym14081584

DO - 10.3390/polym14081584

M3 - Article

VL - 14

SP - 1584

JO - Polymers

JF - Polymers

SN - 2073-4360

IS - 8

ER -