Highly fluorescent extended 2-(2'-hydroxyphenyl)benzazole dyes: synthesis, optical properties and first-principle calculations.
The investigation of the optical properties of extended 2-(2-hydroxyphenyl)benzazole dyes showed a complete frustration of the excited-state intramolecular proton transfer (ESIPT) process leading to a novel family of highly fluorescent fluorophores. In the case of a benzothiazole ring, restoration of ESIPT can be observed in acidic medium leading to ratiometric sensing. These experimental results have been rationalised by first-principle calculations.
Institut de chimie et procédés pour l'énergie, l'environnement et la santé (ICPEES), Chimie Organique pour les Matériaux, la Biologie et l'Optique (COMBO), UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), 25 Rue Becquerel, 67087 Strasbourg Cedex 02, France. massue@unistra.fr gulrich@unistra.fr.
Mohamed
M
Raoui
Julien
J
Massue
Cloé
C
Azarias
Denis
D
Jacquemin
Gilles
G
Ulrich