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Oligo(phenylenevinylene)s with Terminal Donor–Acceptor Substitution
Author(s) -
Meier Herbert,
Gerold Jürgen,
Kolshorn Heinz,
Baumann Wolfram,
Bletz Michael
Publication year - 2002
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20020118)41:2<292::aid-anie292>3.0.co;2-q
Subject(s) - hypsochromic shift , bathochromic shift , chemistry , acceptor , photochemistry , optics , physics , fluorescence , condensed matter physics
Hypsochromic or bathochromic? Depending upon the acceptor group (A=H, CN, CHO, NO 2 ) the position and intensity of the absorption maxima of a series of substituted oligo(phenylenevinylene)s change (see picture). Supported by semi‐empirical calculations, the extent and direction of the shift (hypsochromic or bathochromic) is attributable to the opposing effects of length of conjugation and charge transfer.