| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7839988 | Journal of Luminescence | 2018 | 6 Pages |
Abstract
A water-soluble europium complex (EuL1), with the chromophore conjugated with both the Eu3+ ion and the aza-18-crown-6 ether moiety (receptor), were synthesized and its photophysical properties were studied. Saxitoxin (STX) selectively binds to EuL1 and induced a 4-fold enhancement in europium emission in the presence of a variety of metal ions. A mechanistic study indicated that the luminescence enhancement could be triggered by a two-interaction binding mechanism, in which the initial interaction between STX and the aza-18-crown-6 ether moiety of EuL1 induces the secondary interactions between STX and the Eu3+ ion, which resulted in displacement of the coordinated water molecule on Eu3+ ion.
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Physical Sciences and Engineering
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Physical and Theoretical Chemistry
Authors
Weijian Ye, Junrong Huang, Zhenhao Liang, Wenlu Zheng, Jing-Xiang Zhang, Chi-Sing Lee,