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Chirality in regioregular and soluble polythiophene: An internal probe of conformational changes induced by minute solvation variation
Author(s) -
Bidan Gérard,
Guillerez Stéphane,
Sorokin Victor
Publication year - 1996
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.19960080213
Subject(s) - polythiophene , chirality (physics) , dichroic glass , materials science , solvation , circular dichroism , alkyl , chemical physics , polymer , conductive polymer , crystallography , nanotechnology , organic chemistry , chemistry , molecule , chiral symmetry breaking , physics , quantum mechanics , nambu–jona lasinio model , composite material , quark
Chirality has been used as an internal probe of structural changes accompanying micro‐aggregation of a soluble regioregular poly(alkylthiophene). First, the synthesis of new polythiophenes having long alkyl chains is described. The UV/vis and circular dichroic spectroscopy are shown to indicate that the transformation of a disordered species in solution into an ordered one in a micro‐aggregated state is a two‐step process. Tentative proposals are made about the nature of the intermediate state, which, however, remains unclear.