A Highly Selective "Turn‐On" Fluorescent Sensor for Aluminum Ion Detection in Aqueous Solution Based on Imidazo[2, 1‐b]thiazole Schiff Base. Issue 25 (1st July 2021)

• Record Type: Journal Article
• Authors: Wang, Haibin; Xu, Xin; Yin, Jichen; Zhang, Zhifeng; Xue, Lei
• Is Part Of: ChemistrySelect. Volume 6:Issue 25(2021)
• Page Start: 6454
• Page End: 6459
• Publication Date: 2021-07-01
• Subjects: aluminum -- Schiff base -- sensor -- imidazo[2, 1-b]thiazole; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202101562
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Low sensitivity of fluorescent sensors with "turn‐off" response for identifying Al 3+ has limited their wide application in the field of ion sensing. Herein, this paper reports a novel fluorescence sensor (L ) endowing with "turn‐on" fluorescence response based on imidazo[2, 1‐ b ]thiazole for recognizing Al 3+ in aqueous solutions. Results show that the L exhibits high selectivity and sensitivity with "turn‐on" fluorescence response towards Al 3+, but also has strong anti‐interference to other common ions. In addition, the excellent color change can be distinguished by naked eyes under UV light and the test papers show great potential for detecting Al 3+ in tap water. The supposed sensing mechanism of L to Al 3+ could be attributed to the inhibition of photo‐induced electron transfer (PET) and chelation‐enhanced fluorescence (CHEF). Such a novel design pathway is expected to offer helpful guidance for fabricating various sensors with "turn‐on" fluorescence response. Abstract : A highly selective "turn‐on" fluorescent sensor for aluminum ion detection in aqueous solution based on imidazo[2, 1‐ b ]thiazole schiff base.