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A Dual Channel Fluorescence Chemosensor for Anions Involving Intermolecular Excited State Proton Transfer
Author(s) -
Choi Kihang,
Hamilton Andrew D.
Publication year - 2001
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(20011015)40:20<3912::aid-anie3912>3.0.co;2-r
Subject(s) - fluorophore , fluorescence , excited state , chemistry , photochemistry , ion , proton , intermolecular force , molecule , organic chemistry , atomic physics , physics , quantum mechanics
A macrocycle containing an aminocoumarin fluorophore showed two different fluorescence emission bands on binding with certain anions. Proton transfer from the fluorophore excited state occurred depending on the basicity of the bound anion (see scheme, A − : anion) and this new pathway makes more‐sensitive anion sensing possible.