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A Strap Strategy for Construction of an Excited‐State Intramolecular Proton Transfer (ESIPT) System with Dual Fluorescence
Author(s) -
Suzuki Naoya,
Fukazawa Aiko,
Nagura Kazuhiko,
Saito Shohei,
KitohNishioka Hirotaka,
Yokogawa Daisuke,
Irle Stephan,
Yamaguchi Shigehiro
Publication year - 2014
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.201404867
Subject(s) - intramolecular force , dual (grammatical number) , fluorescence , proton , excited state , photochemistry , state (computer science) , chemistry , computer science , atomic physics , physics , stereochemistry , optics , quantum mechanics , art , literature , algorithm
An amine‐embedded flexible alkyl strap has been incorporated into an emissive boryl‐substituted dithienylpyrrole skeleton as a new entity of excited‐state intramolecular proton transfer (ESIPT) chromophores. The π‐electron system shows a dual emission, which covers a wide range of the visible region depending on the solvent polarity. The incorporation of the aminoalkyl strap as well as the terminal boryl groups efficiently stabilize the zwitterionic excited‐state species resulting from the ESIPT even in an aqueous medium.