期刊
TETRAHEDRON LETTERS
卷 54, 期 12, 页码 1524-1527出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2013.01.009
关键词
Thiacalix[4]arene; Fluoride; Cyanide; Enhancement; Ratiometric
资金
- CSIR [01(2326)/09/EMR-II]
- UGC New Delhi [33-276/2007(SR)]
Thiacalix[4]arene based pyrene-appended fluorescent chemosensors 4 and 5 bearing thiourea moieties have been synthesized which show high selectivity towards fluoride and cyanide ions with different recognition behaviour. The addition of fluoride ions leads to enhancement in fluorescence emission of chemosensors 4 and 5. However, addition of cyanide ions results in ratiometric response with quenching in monomer emission and formation of excimer emission. (c) 2013 Elsevier Ltd. All rights reserved.
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