TITLE:
Synthesis of Soluble Polythiophene Partially Containing 3,4-Ethylenedioxythiophene and 3-Hexylthiophene by Polycondensation
AUTHORS:
Ichiro Imae, Hitoshi Sagawa, Takahiro Mashima, Kenji Komaguchi, Yousuke Ooyama, Yutaka Harima
KEYWORDS:
Polycondensation, Polythiophene, Ethylenedioxythiophene, Alkylthiophene, Solubility
JOURNAL NAME:
Open Journal of Polymer Chemistry,
Vol.4 No.3,
August
20,
2014
ABSTRACT: A novel poly(quinquethiophene) partially containing
3,4-ethylenedioxythiophene (EDOT) and 3-hexylthiophene, poly(3,3 ''''-dihexyl-3',4',3''',4'''-diethylenedioxy-2,2':5',2'':5'',2''':5''',2''''-quinquethiophene), was synthesized by three types of polycondensations. Among them,
direct C-H coupling reaction gave the polymer with the highest molecular
weight. The resulting polymer was soluble in common organic solvents.
Absorption and fluorescence spectra of the polymer showed a remarkable
red-shift compared with the corresponding monomer due to the expansion of
effective π-conjugation length.