An efficient water-soluble fluorescent chemosensor based on furan Schiff base functionalized PEG for the sensitive detection of Al3+ in pure aqueous solution. (22nd June 2020)

• Record Type: Journal Article
• Authors: Bai, Liping; Xu, Yuhang; Li, Leixuan; Tao, Farong; Wang, Shuangshuang; Wang, Liping; Li, Guang
• Is Part Of: New journal of chemistry. Volume 44:Number 26(2020)
• Page Start: 11148
• Page End: 11154
• Publication Date: 2020-06-22
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d0nj01856b
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : An efficient reversible fluorescent chemosensor, PEGFB, based on polyethylene glycol bearing a furan Schiff base unit has been successfully developed to sensitively detect Al 3+ in pure aqueous solution. Abstract : Furan Schiff base functionalized PEG (PEGFB) was synthesized as an excellent reversible fluorescent chemosensor for the sensitive detection of Al 3+ in 100% aqueous solution. The non-fluorescent PEGFB displayed high selectivity towards Al 3+ over other coexistent metal ions, accompanied by a visual fluorescence change from colorless to bright cyan. The detection limit of PEGFB towards Al 3+ was determined to be 7.90 × 10 −9 M. PEGFB could be utilized to detect Al 3+ in a relatively wide pH range from 5 to 9. The reversible fluorescence response of PEGFB upon the addition of Al 3+ and EDTA was successfully used to construct an INHIBIT molecular logic gate. Furthermore, test strips coated with PEGFB could be applied for the convenient and visual sensing of Al 3+ in real water samples.