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Infrared and Raman spectra of a π-conjugated methylene-bridged oligothiophene

✍ Scribed by V. Hernández; Y. Kanemitsu; J. T. López Navarrete

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
285 KB
Volume
29
Category
Article
ISSN
0377-0486

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✦ Synopsis

The Fourier transform FT infrared and FT-Raman spectra of a p-conjugated thiophene-based oligomer were studied. The compound has a well-barrier-well structure, where the well parts are two bithiophene end moieties and the barrier part is a methylene fragment with a larger energy gap. Characteristic vibrational features are compared with those obtained on series of unsubstituted a-linked oligothiophenes and of a,aº-dimethyl end-capped oligothiophenes, in order to estimate the e †ective conjugation length of this compound in the solid state. Vibrational assignments are also proposed for the main bands over the whole spectral range.

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