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Characteristics of Twisted Intramolecular Charge‐Transfer State in a Hyperbranched Conjugated Polymer
Author(s) -
Yang Junlin,
He Qingguo,
Lin Hongzhen,
Fan Jianjun,
Bai Fenglian
Publication year - 2001
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(20011001)22:14<1152::aid-marc1152>3.0.co;2-a
Subject(s) - solvatochromism , intramolecular force , quantum yield , conjugated system , photochemistry , fluorescence , polymer , absorption (acoustics) , materials science , solvent , emission spectrum , absorption spectroscopy , solvent effects , chemistry , spectral line , organic chemistry , optics , physics , astronomy , composite material
A hyperbranched conjugated polymer functionalized in periphery with N,N ‐dimethylaniline was synthesized and characterized. Solvatochromic shifts in both absorption and fluorescence spectra, the effects of solvent polarities on the fluorescence quantum yield and fluorescence lifetime were investigated to probe the formation of an intramolecular charge transfer (ICT) state. The peak position of the emission band arising from the ICT state is red‐shifted, and the fluorescence quantum efficiency of the polymer decreases with increasing polarity of the solvents.