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Original Articles

Epoxy-based polymer bearing activated azo dye (methyl orange) units: novel colorimetric indicator for amines

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Pages 591-596 | Received 03 Mar 2008, Accepted 20 Oct 2008, Published online: 22 Sep 2009
 

Abstract

Novel epoxy-based polymer 2-bearing activated azo dye, 4-(4-sulphophenylazo)-N,N-dimethylaniline (methyl orange), moieties were synthesised by post-azo-coupling reaction of poly(hydroxy ether amine) 1 and investigated sensory responses towards amines. The reversible protonation–deprotonation chemistry of activated azobenzene moiety makes it of potential use as a colorimetric indicator for amines.

Acknowledgements

The financial support for this work from University Grants Commission, Government of India, under project no. PSW 04/06-07 (ERO) is gratefully acknowledged.

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