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Extraordinary Overoxidation Resistance Increase in Self‐Doped Polypyrroles by Using Non‐conventional Low Charge‐Density Anions
Author(s) -
Masalles C.,
Llop J.,
Viñas C.,
Teixidor F.
Publication year - 2002
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/1521-4095(20020605)14:11<826::aid-adma826>3.0.co;2-c
Subject(s) - covalent bond , materials science , doping , polymerization , electrolyte , pyrrole , electrochemistry , chemical engineering , membrane , nanotechnology , polymer chemistry , electrode , organic chemistry , optoelectronics , chemistry , polymer , composite material , engineering , biochemistry
A cation exchange membrane formed via the polymerization of a cobaltabisdicarbollide unit with pyrrole is presented. The cobalt doping agent is covalently bound directly to the pyrrole unit (see Figure); no supporting electrolyte is necessary. An improved overoxidation resistance over the non‐covalently linked counterpart is reported. Thus this new material is an excellent candidate for selective ion exchange resins controlled by an electrochemical potential.