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Electrochemistry of polydialkylcyclopentadithiophenes—modulation of π dimerization by interchain spacing groups
Author(s) -
Zotti Gianni,
Berlin Anna,
Pagani Giorgio,
Schiavon Gilberto,
Zecchin Sandro
Publication year - 1994
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/adma.19940060311
Subject(s) - electrochemistry , materials science , polymer , modulation (music) , anodic oxidation , group (periodic table) , anode , crystallography , polymer chemistry , electrode , organic chemistry , composite material , chemistry , physics , acoustics
π dimerization in polythiophenes , leading to stabilization of the intermediate polaronic form, hasrecently been proposed as the origin of the distinctive twin process in the oxidation cycles of polythiophenes. Electrochemical measurements on polymers obtained by anodic cupling 4,4‐di‐ n ‐alkylcyclopentadithiophene (see Fugure) confirm this; the π dimerization operates when the spacing groups between the polymer strands are absent of the spacing group increases.