Development of colorimetric method for the detection of amines bound to solid support

Article

Shah, A., de Biasi, V., Camilleri, P. and Rahman, S. 1997. Development of colorimetric method for the detection of amines bound to solid support. Analytical Communications. 34 (11), pp. 325-328. https://doi.org/10.1039/A705630C
TypeArticle
TitleDevelopment of colorimetric method for the detection of amines bound to solid support
AuthorsShah, A., de Biasi, V., Camilleri, P. and Rahman, S.
Abstract

4-N,N′-Dimethylaminoazobenzene-4′-isothiocyanate (DABITC), malachite green isothiocyanate (MGI) and 2,3-indolinedione (isatin) have been evaluated for the detection of primary aromatic and secondary aliphatic/aromatic amines bound to polystyrene resins. Isatin was found to be an ideal reagent for the derivatisation of resine bound compounds containing a proline residue. Both DABITC and MGI reacted with primary and a secondary resin bound amines. However, MGI was found to be the more useful reagent because reaction with this dye gives distinctly coloured polystyrene beads. Beads containing bound aniline turned from brown to green and those containing bound proline or piperazine turned from white to deep-blue in colour. The sensitivity of the colorimetric assay was tested by treating a resin containing partially derivatised (approximately 11% unreacted amine) piperazine with MGI. The resin turned from white to deep-blue in colour, demonstrating the presence of unreacted piperazine.

PublisherRoyal Society of Chemistry
JournalAnalytical Communications
ISSN1359-7337
Electronic1364-5536
Publication dates
Print21 Nov 1997
Publication process dates
Deposited10 Nov 2017
Accepted18 Sep 1997
Output statusPublished
Digital Object Identifier (DOI)https://doi.org/10.1039/A705630C
LanguageEnglish
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