Detection of SO2 derivatives using a new chalco-coumarin derivative in cationic micellar media: Application to real samples

Marisol Gómez, Margarita E. Aliaga, Verónica Arancibia, Alexis Moya, Camilo Segura, Marco T. Nuñez, Pabla Aguirre, Edgar Nagles, Olimpo García-Beltrán

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Abstract

A new probe (E)-7-(diethylamino)-3-(3-(thiophen-2-yl)acryloyl)-2H-chromen-2-one (ChC16) was synthesized and studied as a turn-on fluorescent probe, based on a Michael addition mechanism for sensing SO2 derivatives, which is favored in the presence of cationic micellar media such as cetylpyridinium bromide (CPB). The probe showed high selectivity and sensitivity toward bisulfite over other anions and biothiols, including cysteine (Cys), homocysteine (Hcy) and glutathione (GSH), with a detection limit of 240 nM. Moreover, the probe showed great potential for its practical application in the detection of bisulfite in real samples, such as dry white wine, and in bioimaging.

Original languageEnglish
Pages (from-to)31261-31266
Number of pages6
JournalRSC Advances
Volume8
Issue number55
DOIs
StatePublished - 1 Jan 2018

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