ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

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)