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Resonant Raman Scattering of Poly-3-Alkylthiophenes

Published online by Cambridge University Press:  25 February 2011

C. Botta ,
S. Luzzati ,
A. Bolognesi ,
M. Catellani ,
S. Destri  and
R. Tubino
C. Botta
Affiliation:
Istituto di Chimica delle Macromolecole, CNR, via Bassini 15 20133 Milano
S. Luzzati
Affiliation:
Istituto di Chimica delle Macromolecole, CNR, via Bassini 15 20133 Milano
A. Bolognesi
Affiliation:
Istituto di Chimica delle Macromolecole, CNR, via Bassini 15 20133 Milano
M. Catellani
Affiliation:
Istituto di Chimica delle Macromolecole, CNR, via Bassini 15 20133 Milano
S. Destri
Affiliation:
Istituto di Chimica delle Macromolecole, CNR, via Bassini 15 20133 Milano
R. Tubino
Affiliation:
Istituto di Fisica, Università di Sassari, via Vienna 2.
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Abstract

We report Raman scattering measurements on poly-3-heptylthiophene and poly-3-undecylthiophenes both on resonance and preresonance conditions. We have studied different samples as solutions ,solution cast films and electrosynthetized as grown films. Our results indicate that the vibrational frequency of the mode which is strongly coupled to the π - π* electronic transition is sensible to “small” torsions between thiophenes rings , which do not necessarly interrupt completely the conjugation path.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 173: Symposium Q – Advanced Organic Solid State Materials , 1989 , 397
Copyright
Copyright © Materials Research Society 1990

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References

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