Selective detection of Hg(II) with benzothiazole-based fluorescent organic cation and the resultant complex as a ratiometric sensor for bromide in water

Amanpreet Singh, Ajnesh Singh, Narinder Singh, Doo Ok Jang

Research output: Contribution to journalArticle

17 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)3535-3541
Number of pages7
JournalTetrahedron
Volume72
Issue number24
DOIs
Publication statusPublished - 2016 Jun 16

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Bromides
Cations
Ions
Water
Sensors
Anions
Metal ions
Hydrogen
Fluorescence
Nuclear magnetic resonance
Limit of Detection
Metals
benzothiazole

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

Cite this

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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.",
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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. / Singh, Amanpreet; Singh, Ajnesh; Singh, Narinder; Jang, Doo Ok.

In: Tetrahedron, Vol. 72, No. 24, 16.06.2016, p. 3535-3541.

Research output: Contribution to journalArticle

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