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Synthesis and Properties of a Series of Regioregularly Amino‐Substituted Oligo‐ and Polythiophenes
Author(s) -
Götz G.,
Scheib S.,
Klose R.,
Heinze J.,
Bäuerle P.
Publication year - 2002
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/1616-3028(20021016)12:10<723::aid-adfm723>3.0.co;2-2
Subject(s) - materials science , homologous series , conjugated system , polymer , oligomer , polymer chemistry , substitution (logic) , series (stratigraphy) , chain (unit) , crystallography , chemistry , composite material , paleontology , biology , physics , astronomy , computer science , programming language
A homologous series of donor‐substituted oligothiophenes 5 , 7 , and 9 bearing pyrrolidino groups in the “outer” β‐positions were synthesized up to a quaterthiophene. The physical properties were investigated in dependence on the chain length of the conjugated system. Due to the substitution pattern, even the longer oligomers exhibit good film forming properties and could be electropolymerized to the corresponding donor‐substituted polythiophenes P5 , P7 , and P9 , which promise a pure stereoregular structure. The electronic properties of both oligomers and polymers were found to be strongly dominated by the donor strength of the substituents.