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Chromic effects in poly(3‐(10‐hexanoyloxydecyl)‐2,5‐thienylene) as precursor of ω‐hydroxydecyl‐functionalized polythiophen
Author(s) -
Lanzi Massimiliano,
Bertinelli Franco,
CostaBizzarri Paolo,
DellaCasa Carlo
Publication year - 1998
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/(sici)1099-1581(199806)9:6<334::aid-pat786>3.0.co;2-7
Subject(s) - thermochromism , solvatochromism , polythiophene , polymer , solvent , materials science , polymer chemistry , carboxylate , photochemistry , chemical engineering , organic chemistry , conductive polymer , chemistry , engineering , composite material
Abstract The preparation of a hexanoyloxydecyl 3‐substituted polythiophene and its conversion to the corresponding hydroxydecyl polymer, soluble in common organic solvents, is described. Solvatochromic and thermochromic effects of the two polymers were investigated by UV–vis spectroscopy in pure solvent and in solvent/nonsolvent solutions. A very different response was found depending on the type of functional group. The carboxylate polymer requires the synergy of both nonsolvent and low temperature for a strong chromic effect comparable to that of the hydroxy polymer to be observed. A possible explanation of this behavior is discussed. © 1998 John Wiley & Sons, Ltd.