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A New 4-Amino-7-Nitro-2,1,3-Benzoxadiazole (ANBD)-Based Fluorescent Probe for the Detection of Hg

A New 4-Amino-7-Nitro-2,1,3-Benzoxadiazole (ANBD)-Based Fluorescent Probe for the Detection of Hg

Ke Wang, Xue Mao, Liling Cao, Guoping Lv, Xinfeng Dong, Yan He, Yongju Wei

J Fluoresc. 2017 Sep;27(5):1739-1745.

PMID: 28501902

Abstract:

Based on the photoinduced electron transfer (PET) principle, 4-amino-7-nitro-2,1,3-benzoxadiazole (ANBD) has been used as a fluorophore to develop a new fluorescent probe, 4-(2-N,N-dimethylthioacetamide)amino-7-nitro-2,1,3-benzoxadiazole (2), for the detection of Hg2+. Upon the addition of Hg2+, a 46-fold fluorescence enhancement occurs. Moreover the probe 2 exhibits a high selectivity and sensitivity to Hg2+, even in the presence of other common metal ions. Under optimal reaction conditions, a good linearity can be obtained in the range of 0.5-2.5 μM, and the detection limit is 0.05 μM. In addition, the desulfurization reaction mechanism is proposed based on electrospray ionization mass spectrum. The present study is not only a supplement to the detection method of Hg2+, but also a merit to the development of ANBD-based fluorescent probes.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP142246488	4-Chloro-7-chlorosulfonyl-2,1,3-benzoxadiazole		142246-48-8	Price

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