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Issue 106, 2014
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A fluorescence turn-on probe for selective detection of nitrogen dioxide

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Abstract

Two copper(II) complexes, 1 and 2, of two ligands, L1 and L2 [L1 = 2-{[anthracen-9-ylmethyl-(2-dimethylamino-ethyl)-amino]-methyl}-4,6-di-tert-butyl-phenol; L2 = 5-dimethylamino-naphthalene-1-sulfonic acid (3,5-di-tert-butyl-2-hydroxy-benzyl)-(2-dimethylamino-ethyl)-amide, were synthesized and characterized. In methanol solution, the quenched fluorescence intensity of the ligands in complexes 1 and 2 was found to be restored upon exposure to nitrogen dioxide. This is attributed to the reduction of the paramagnetic Cu(II) centre by nitrogen dioxide to diamagnetic Cu(I). The reduction was accompanied by simultaneous nitration in the phenol ring of the ligands.

Graphical abstract: A fluorescence turn-on probe for selective detection of nitrogen dioxide

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Supplementary files

Article information


Submitted
14 Sep 2014
Accepted
06 Nov 2014
First published
06 Nov 2014

RSC Adv., 2014,4, 61944-61947
Article type
Communication

A fluorescence turn-on probe for selective detection of nitrogen dioxide

B. Mondal and V. Kumar, RSC Adv., 2014, 4, 61944
DOI: 10.1039/C4RA10426A

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