Dyes and Pigments p. 33 - 40 (2016)
Update date:2022-08-11
Topics:
Huang, Ximing
Lu, Zhengliang
Wang, Zhuo
Fan, Chunhua
Fan, Wenlong
Shi, Xiaomin
Zhang, Haitao
Pei, Meishan
A novel bipyridine-functionalized turn-on fluorescent chemosensor was successfully synthesized and fully characterized by 1H NMR, 13C NMR and MS, UV-vis and fluorescence spectroscopies. The sensor specifically binds to Hg2+ over other competing ions with a significant fluorescence enhancement as well as a visual colour change under physiological conditions. The detection limit of Hg2+ was as low as 32 nM, confirming very high sensitivity toward Hg2+. Moreover, the fluorescence intensity and colour change of the sensor-Hg2+ was quenched by I- or S2- and was proportional to their concentrations with a detection limit of 0.37 μM and 0.43 μM, respectively. The reaction of I- grabbing Hg2+ from the sensor-Hg2+ finished in 10 s due to a stronger binding force, much faster than that of S2-, which allowed fast detection of I- over S2- even in a competent environment. In addition, the sensor was successfully used for the highly sensitive detection of Hg2+ in living cells.
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Ningxia Soochow Agrochemical Limited Company
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Hangzhou Showland Technology Co., Ltd.
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Address:ROOM2118,NO.553,WENSAN ROAD,HANGZHOU,CHINA
Changzhou Anyi Biochem Co., Ltd.
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Address:no,51 caoda
Jiangxi Dongbang Pharmaceutical Co., Ltd.
Contact:+86-795-4433603, 4433388
Address:Fengxin Industrial Park, Fengxin County, Jiangxi Province, P.R.C
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