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Metallic Ion Sensing with a Benzothiazole-Based Fluorimetric Chemosensor

Centre of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
Author to whom correspondence should be addressed.
Presented at the 22nd International Electronic Conference on Synthetic Organic Chemistry, 15 November– 15 December 2018; Available Online:
Proceedings 2019, 9(1), 11;
Published: 14 November 2018
PDF [456 KB, uploaded 19 March 2019]


An unnatural amino acid derivative, N-tert-butyloxycarbonyl asparagine benzyl ester bearing a benzothiazole unit at the side chain, was evaluated as a fluorimetric chemosensor for several transition metal cations with environmental, biological and analytic relevance. Spectrofluorimetric titrations of the heterocyclic asparagine derivative with the various ions were carried out in acetonitrile and acetonitrile/water (9:1). It was found that the unnatural amino acid had a remarkable fluorimetric response in the presence of Cu2+ in acetonitrile and in the presence of Fe3+ in acetonitrile/water (9:1).
Keywords: asparagine; benzothiazole; fluorimetric chemosensor; metallic ions asparagine; benzothiazole; fluorimetric chemosensor; metallic ions
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Martins, C.D.F.; Raposo, M.M.M.; Costa, S.P.G. Metallic Ion Sensing with a Benzothiazole-Based Fluorimetric Chemosensor. Proceedings 2019, 9, 11.

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