期刊
TETRAHEDRON LETTERS
卷 47, 期 46, 页码 8165-8169出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2006.09.035
关键词
anion binding; colorimetric; selective binding; fluorescence quenching; fluoride binding; benzoate binding
Thiourea-containing coumarins 1, 2 have been designed and synthesized via reaction of 6-aminomethylcoumarin and the corresponding isothiocyanates. Their anion-binding ability has been examined using UV-vis, fluorescence and H-1 NMR. The anion recognition takes place through charge neutral thiourea receptor sites with concomitant fluorescence quenching of the coumarin moiety with 1 showing a strong binding to C6H5COO- over F- with a distinct change in color. (c) 2006 Elsevier Ltd. All rights reserved.
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