A new fluorescent chemosensor for F based on inhibition of excited-state intramolecular proton transfer期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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A new fluorescent chemosensor for F based on inhibition of excited-state intramolecular proton transfer

Authors:	Hyo Sung Jung Jacques Vicens

Institution:	^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

Abstract:	New fluorescent chemosensor 1 with two amidoanthraquinone groups (1-AAQs) at the lower rim of p-tert-butylcalix4]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.

Keywords:	Chemosensor Anions Anthraquinone Calixarenes ESIPT
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