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Synthesis 2002(9): 1136-1142
DOI: 10.1055/s-2002-32523
PAPER
© Georg Thieme Verlag Stuttgart · New York

Dialkylfluorene-Oligothiophene and Dialkylfluorene-Dithienylvinylene Alternating Copolymers

U. Asawapirom, R. Güntner, M. Forster, T. Farrell, U. Scherf*
Universität Potsdam, Polymerchemie, Karl-Liebknecht-Str. 24/25, Haus 25, 14476 Golm, Germany
e-Mail: scherf@rz.uni-potsdam.de;
Further Information

Publication History

Received 20 February 2002
Publication Date:
28 June 2002 (online)

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Abstract

Well defined dialkylfluorene/oligothiophene and di­alkylfluorene/dithienylvinylene alternating copolymers have been synthesized via the polycondensation of 2,7-dibromo-(9,9-dialkyl­fluorene) with the appropriate distannylated (oligo)thienylene component according to a Stille-type coupling reaction using tetrakis(triphenylphosphine)palladium [Pd(PPh3)4] as catalyst. The alternate incorporation of the thienylene building blocks leads to the tunability of the photoluminescent properties of the alternating copolymers. The long wavelength absorption and photoluminescence maxima of the copolymers display a subsequent bathochromic shift upon increasing the size of the (oligo)thienylene building block.

Key words

fluorene - thiophene - polymers - condensation - photoluminescence - Stille reaction