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Selective detection of Hg(II) with benzothiazole-based fluorescent organic cation and the resultant complex as a ratiometric sensor for bromide in water
- Source :
- Tetrahedron. 72:3535-3541
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- A benzothiazole-based receptor conjugated with an imidazolium cation, receptor N1, was synthesized. Receptor N1 is capable of selectively binding Hg(II) in the presence of other metal ions in water, with a large enhancement in fluorescence intensity at 380 nm via a PET mechanism. The resulting Hg(II) complex of receptor N1 showed a selective ratiometric response upon addition of Br− ions. The Hg(II) complex of receptor N1 was used to determine the concentration of Br− ions in the presence of other anions, with a detection limit of 22 nM. 1H NMR studies showed that the imidazolium hydrogen in the Hg(II) complex of receptor N1 participates in the recognition of Br− ions. In the absence of Hg(II), receptor N1 did not recognize Br− ions.
- Subjects :
- Detection limit
010405 organic chemistry
Metal ions in aqueous solution
Organic Chemistry
Inorganic chemistry
Conjugated system
010402 general chemistry
Photochemistry
01 natural sciences
Biochemistry
Fluorescence
0104 chemical sciences
Ion
chemistry.chemical_compound
chemistry
Benzothiazole
Bromide
Drug Discovery
Proton NMR
Subjects
Details
- ISSN :
- 00404020
- Volume :
- 72
- Database :
- OpenAIRE
- Journal :
- Tetrahedron
- Accession number :
- edsair.doi...........6eea706bc7b0536bbb9aefe6f9e5707e