A new fluorogenic calix[4]arene N-dansylcarboxamide in the cone conformation for selective optical recognition of mercury(II)

Journal article

Authors/Editors

Dinake, Pogisego

Research Areas

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Publication Details

Author list: Dinake P, Prokhorova PE, Talanov VS, Butcher RJ, Talanova GG

Publisher: Elsevier

Place: OXFORD

Publication year: 2010

Journal: Tetrahedron Letters (0040-4039)

Journal acronym: TETRAHEDRON LETT

Volume number: 51

Issue number: 38

Start page: 5016

End page: 5019

Number of pages: 4

ISSN: 0040-4039

Languages: English-Great Britain (EN-GB)

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Abstract

A novel fluorogenic calix[4]arene dansylcarboxamide in the cone conformation has been synthesized as the disodium salt and employed in optical recognition of mercury(II). In extraction from aqueous solutions with high content of competing Na(+) (C(Na+) similar to 0.1 M; pH 5.0, acetate buffer) into CHCl(3), the fluoroionophore allowed for detection of 8.0 x 10(-7) M Hg(2+) (1:1 complex; K(ex)(app) = 2.6 x 10(4)) with high selectivity over many other relevant metal ions. (C) 2010 Elsevier Ltd. All rights reserved.

Keywords

Calix[4]arene, Cone conformation, Dansyl, Fluorescence, Mercury(II), Optical chemosensor

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