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Novel water-soluble fluorescent probe for rapidly detecting SO2 derivatives

Hui Wang, Le Zhou, Fengze Cai, Yongling Xu, Di Li, Dexiang Feng, Yan Wei, Zhijun Feng, Xiaoxia Gu, and Yunjun Wu

Wannan Medical College, Wuhu, People’s Republic of China

 

E-mail: wanghias@126.com

Abstract: In this paper, two novel benzothiazole derivatives EtSN and OAcSN with a D–π–A configuration were developed as fluorescent probes for the detection of HSO3. Compared with OAcSN, probe EtSN, bearing ester group, displayed a lower detection limit and faster response time. Upon treatment with HSO3, EtSN and OAcSN displayed noticeable color change from yellow (EtSN)/red (OAcSN) to coreless, respectively. Competitive experiments indicated that EtSN and OAcSN had higher fluorescence selectivity towards HSO3 than other analytes. The sensing mechanism was further illustrated by 1H NMR and TD-DFT.

Keywords: Benzothiazole ; Fluorescent probe ; SO2 derivative 

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-019-00825-7

 

Chemical Papers 73 (11) 2737–2743 (2019)

Thursday, June 30, 2022

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