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Infrared and Raman spectra of two well–barrier–well 1,2‐di(α,α′‐oligothienyl)ethanes
Author(s) -
Hernández V.,
Berlin A.,
Zotti G.,
López Navarrete J. T.
Publication year - 1997
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/(sici)1097-4555(199711)28:11<855::aid-jrs172>3.0.co;2-m
Subject(s) - raman spectroscopy , chemistry , infrared , terthiophene , fourier transform , fourier transform infrared spectroscopy , thiophene , infrared spectroscopy , spectral line , solid state , analytical chemistry (journal) , photochemistry , organic chemistry , optics , physics , quantum mechanics , astronomy
The vibrational Fourier transform infrared and Fourier transform Raman spectra of two neutral thiophene‐based oligomers in solution and in the solid state were studied. The compounds have a well–barrier–well structure, where the well parts are two biothiophene or terthiophene end moieties and the barrier part is a dimethylene fragment with a larger energy gap. Characteristic features are correlated with vibrational data on one‐dimensional unsubstituted α‐oligothiophenes and α,α′‐dimethyl end‐capped oligothiophenes. Vibrational assignments are also proposed for relevant bands in the whole spectral range. © 1997 John Wiley & Sons, Ltd.