期刊
TETRAHEDRON LETTERS
卷 54, 期 28, 页码 3630-3634出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2013.04.103
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资金
- CSIR
- Council of Scientific and Industrial Research (CSIR), New Delhi, India [01(2401)/10/EMR-II]
A novel rhodamine-based chemosensor, 3',6'-bis(diethylamino)-2-(2,7-dimethoxy-9H-fluoren-9-ylidene)amino)spiro[isoindoline-1,9'-xanthen]-3-one (1) for aluminum ion, was designed and synthesized. Compound 1 is an orange colored, weak fluorescent compound which was synthesized via one-step facile reaction of rhodamine B hydrazide with 2,7-dimethoxy-9H-fluoren-9-one in MeOH. When A1(3+) salt was added in methanol:water (30:70, v/v) solution then spirolactum ring of 1 was opened. The absorbance and fluorescence of the mixed solution were increased dramatically because of the opening of the lactum ring. Thus, signal transduction occurred via reversible CHEF (chelation-enhanced fluorescence) mechanism in the range 580-584 nm. (C) 2013 Elsevier Ltd. All rights reserved.
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