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Download fileSensing in 15 s for Aqueous Fluoride Anion by Water-Insoluble Fluorescent Probe Incorporating Hydrogel
journal contribution
posted on 16.04.2013, 00:00 authored by Lei Xiong, Jiao Feng, Rui Hu, Shuangqing Wang, Shayu Li, Yi Li, Guoqiang YangAnion recognition and sensing via
artificial receptors have attracted
a great deal of attention since they play a fundamental and important
role in chemical, biological, medical, and environmental processes.
Fluoride, as one of the smallest anions, is of particular interest
because of its role in dental care and the analysis of drinking water.
Herein, we invented a new method for F– detection
by adopting the hydrogel as the supporter of reaction between a water
insoluble fluorescent probe and F– in the water
environment. This method is highly rapid, selective, and sensitive,
which can determine F– levels in 15 s at the drinking
water standard. A novel compound N-(3-(benzo[d]thiazol-2-yl)-4-(tert-butyldiphenylsilyloxy)phenyl)
acetamide (BTBPA) was synthesized as the fluorescent probe because
of the significant fluorescent color change from blue to green after
the reaction with F–. This method does not require
the probe substances to be water-soluble, which greatly expands the
range of the specific fluorescent molecules used in ion detection.
Additionally, just a few microliter samples were required in the analysis
procedures with this method.