文献类型：期刊文献

英文题名：Determination of sulfite in food and beverages using a reliable ratiometric AIE probe

作者：Zhang, Shasha[1];Mei, Ju[1]

机构：[1]East China Univ Sci & Technol, Joint Int Res Lab Precis Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Inst Fine Chem,Sch Chem & Mol Engn,Key Lab Adv Ma, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2021

卷号：45

期号：40

起止页码：19118

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;EI(收录号：20214311080570);WOS:【SCI-EXPANDED(收录号:WOS:000703714700001)】；

基金：This work received financial support from the NSFC/China (Grant No. 21788102, 21875064, 21604023, and 21790361), the Shanghai Science and Technology Commission Basic Project-Shanghai Natural Science Foundation (Grant No. 21ZR1417600), the Shanghai Municipal Science and Technology Major Project (Grant No. 2018SHZDZX03), Programme of Introducing Talents of Discipline to Universities (Grant No. B16017), the Shanghai Science and Technology Committee (Grant No. 17520750100), the Shanghai Sailing Program (Grant No. 16YF1402200), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Beer - Fluorescence - Charge transfer - Health hazards

摘要：Sulfite is an extensively used additive in foods and beverages, while its abuse could bring about health hazards, making the fast, reliable and economic assay of sulfite very important. Herein, an AIE-active fluorescent probe featured with intramolecular charge transfer (ICT) characteristics is exploited to detect sulfite in a ratiometric manner within 4 minutes. Thanks to the AIE attribute, an approximately 6-fold fluorescence enhancement is shown. Moreover, the probe enjoys higher selectivity to SO32- over other competitive anionic species including HSO3-, HS- and SO42-. The sensing mechanism has been clearly confirmed by H-1 NMR and HRMS. Benefiting from the fast ratiometric response, high selectivity, superior anti-interference capability, and wide linear response range, the presented probe is capable of evaluating sulfite levels in sugar, liquor, peach brandy, red wine, and beer, with high accuracy and small deviation. It is noteworthy that the high reliability of the probe has been fully validated by iodometry.