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Investigation of Exciton Coupling in Oligothiophenes by Circular Dichroism Spectroscopy
Author(s) -
LangeveldVoss Bea M. W.,
Beljonne David,
Shuai Zhigang,
Janssen René A. J.,
Meskers Stefan C. J.,
Meijer E. W.,
Brédas JeanLuc
Publication year - 1998
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/(sici)1521-4095(199811)10:16<1343::aid-adma1343>3.0.co;2-z
Subject(s) - exciton , circular dichroism , materials science , polymer , coupling (piping) , chemical physics , spectroscopy , spectral line , molecular physics , solid state , condensed matter physics , crystallography , chemistry , physics , quantum mechanics , metallurgy , composite material
The solid‐state photophysical properties of semiconducting polymers result from the interplay between the intrinsic features of the polymer chains and interchain interactions. Exciton coupling, which in principle can be estimated from circular dichroism (CD) spectra, is one of the major interchain interactions affecting the optical properties of semiconducting polymers. Here the authors present a combined experimental and theoretical investigation of the chiroptical properties of oligothiophenes. The results confirm that the CD spectrum provides an independent estimate of the exciton coupling.