In situ spectroelectrochemical study on a copolymer made from the 2-biphenyl-3-octylthiophene monomer

Rose-Marie Latonen*, Jan-Erik Lönnqvist, Lars Jalander, Carita Kvarnström, Ari Ivaska

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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An electrically conducting copolymer film, poly(2-biphenyl-3-octylthiophene) (PBOT), was electropolymerized from the comonomer 2-
biphenyl-3-octylthiophene (BOT) and characterized by both ex situ and in situ spectroelectrochemical techniques: UV–vis spectroscopy,
FTIR spectroscopy and resonance Raman spectroscopy. The formed copolymer was compared with a copolymer synthesized from a mixture
of 3-octylthiophene and biphenyl, poly(thienyl biphenyl) (PTB). All spectroscopic measurements gave evidence of formation of a conductive
material with high content of short phenylene segments but with an effective conjugation length shorter than in the PTB copolymer film. The
structure of PBOT was also less crosslinked having more para-substitution than the structure of PTB.
Original languageEnglish
Pages (from-to)1244–1254
JournalElectrochimica Acta
Publication statusPublished - 2006
MoE publication typeA1 Journal article-refereed

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