A fluorescent chemosensor for Al3+ based on julolidine and tryptophan moieties

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A new and simple fluorescent chemosensor 1, based on julolidine and tryptophan moieties, has been synthesized and characterized. The sensor 1 displayed a selective and sensitive detecting ability for aluminum (III) ion by 'OFF ON' fluorescent response in aqueous solution. This sensing mechanism might be due to the inhibition of C=N isomerization, and the activation of chelation enhanced fluorescence (CHEF). This sensing mechanism of 1 for Al3+ was supported by theoretical calculations. Moreover, sensor I had a low detection limit (6.4 mu M), which is below than the WHO recommendation level (7.41 I'M) for drinking water. Importantly, the chemosensor 1 could be applied to living cells to detect Al3+. Therefore, the sensor 1 can be employed as a practical fluorescent chemosensor for recognition of Al3+ in aqueous solution. (C) 2016 Elsevier Ltd. All rights reserved.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2016-04
Language
English
Article Type
Article
Citation

TETRAHEDRON, v.72, no.16, pp.1998 - 2005

ISSN
0040-4020
DOI
10.1016/j.tet.2016.02.066
URI
http://hdl.handle.net/10203/240274
Appears in Collection
CH-Journal Papers(저널논문)
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