An efficient tetrahydroquinazolin-2-amine derivative-grafted cellulose fluorescent probe for detection of Cu2+ and Zn2+. (1st March 2023)

• Record Type: Journal Article
• Authors: Meng, Zhiyuan; Zhao, Fei; Wang, Zhonglong; Yang, Yiqin; Wang, Shifa
• Is Part Of: Carbohydrate polymers. Volume 303(2023)
• Publication Date: 2023-03-01
• Subjects: Carboxymethyl cellulose -- Fluorescent probe -- Cu2+ -- Zn2+ -- Water samples; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2022.120445
• Languages: English
• ISSNs: 0144-8617

Abstract

Abstract: Cu 2+ and Zn 2+ play crucial roles in many physiological processes, and their disorder will cause harm to human health. An efficient difunctional fluorescent probe CMC-GE-PQA for simultaneous detection of Cu 2+ and Zn 2+ was synthesized based on carboxymethyl cellulose. The probe CMC-GE-PQA exhibited a moderate blue fluorescence color. Interestingly, this probe showed a distinct fluorescence enhancement response toward Zn 2+, while it displayed a significant fluorescence quenching response toward Cu 2+ . The detection limits of CMC-GE-PQA for Cu 2+ and Zn 2+ were calculated as low as 5.0 × 10 −8 M and 1.0 × 10 −7 M, respectively. The detection mechanisms of CMC-GE-PQA for Cu 2+ and Zn 2+ were fully verified by Job's plot, X-ray photoelectron spectroscopy analysis. The probe CMC-GE-PQA was applied to determine the trace amounts of Cu 2+ and Zn 2+ in environmental water samples. In addition, the probe CMC-GE-PQA -based fluorescent film and hydrogel were manufactured to achieve the portable detection of Cu 2+ and Zn 2+ . Graphical abstract: Unlabelled Image