A new fluorescent chemosensor for F based on inhibition of excited-state intramolecular proton transfer |
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| Authors: | Hyo Sung Jung Jacques Vicens |
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| Affiliation: | a Department of Chemistry, Korea University, Seoul 136-701, Republic of Korea
b IPHC-ULP-ECPM-CNRS URA 7178, 25 rue Becquerel, F-67087, Strasbourg Cédex, France |
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| Abstract: | New fluorescent chemosensor 1 with two amidoanthraquinone groups (1-AAQs) at the lower rim of p-tert-butylcalix[4]arene has been synthesized. The significant changes of absorption and fluorescence bands show that chemosensor 1 is selective toward fluoride ion (F−) over other anions such as Cl−, Br−, I−, CH3COO−,  ,  , and OH−. The ESIPT process of 1 is inhibited by the fluoride-induced H-bonding followed by deprotonation of NH of the 1-AAQ. |
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| Keywords: | Chemosensor Anions Anthraquinone Calixarenes ESIPT |
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