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Banana‐Shaped Oligo(aryleneethynylene)s: Synthesis and Light‐Emitting Characteristics
Author(s) -
Yamaguchi Yoshihiro,
Kobayashi Shigeya,
Wakamiya Tateaki,
Matsubara Yoshio,
Yoshida Zenichi
Publication year - 2005
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/anie.200502214
Subject(s) - fluorescence , pyridine , quantum yield , excited state , solvent , yield (engineering) , molecule , photochemistry , substitution (logic) , chemistry , computer science , physics , organic chemistry , optics , atomic physics , thermodynamics , programming language
Pick of the bunch : Banana‐shaped molecules 1 and 2 containing dimethoxybenzene and pyridine units are highly efficient emitters of violet light despite the interruption of the π conjugation because of meta substitution. The contrasting solvent dependencies of the fluorescence quantum yield values of 1 and 2 are explained by the disparity between the difference density distributions in the excited states of the molecules.