期刊
ACS APPLIED MATERIALS & INTERFACES
卷 2, 期 4, 页码 1066-1072出版社
AMER CHEMICAL SOC
DOI: 10.1021/am900840q
关键词
chemosensor; mercury; deprotection of thioacetals; intramolecular charge transfer; fluorescence; high selectivity
资金
- National Natural Science Foundation of China [20974084]
- NCET
- National Fundamental Key Research Program
On the basis of the protection reaction between ethanethiol and aldehyde, we designed and synthesized two new ratiometric fluorescent chemosensors, 3 and 4, by using intramolecular charge transfer (ICT) as a signaling mechanism. Upon the addition of Hg2+ ion, both probes displayed apparent luminescence color changes, which could be observed by naked eyes under a UV lamp. Unexpectedly, both chemosensors also gave response to the addition of trace silver ions, making this kind of chemosensors as the first example of ratiometric fluorescent probe that showed dual channel fluorescence for both Hg2+ and Ag+. The test strips experiments suggested that 3 and 4 could serve as practical fluorescent probes for rapid detection of Hg2+ ion.
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