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A new class of fluorogenic thiazolo[2,3-: B] quinazolinone receptor: Selective detection towards mercury and hydrogen bisulfate ions in aqueous medium

RSC Advances, ISSN: 2046-2069, Vol: 11, Issue: 53, Page: 33288-33293
2021
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A series of fluorophoric and structurally diverse thiazoloquinazoline derivatives were synthesized in a one-pot multicomponent cascade reaction using a microwave irradiation technique. The unique structural arrangement of the synthesized compounds encouraged us to design a new type of bioactive molecular receptor. This receptor interacts with HSO4- in 1 : 1 and Hg2+ in 1 : 2 binding stoichiometric ratios resulting in a change in fluorescence as well as absorption spectra in aqueous medium. The ion bonded receptor complex possibly enhances the fluorescence signal of the receptor via H-bonded complex formation with HSO4- ions and co-ordinate complex formation with Hg2+ ions.

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