荧光
检出限
共价键
水溶液
材料科学
冷凝
共价有机骨架
线性范围
纳米技术
化学工程
分析化学(期刊)
化学
色谱法
有机化学
光学
工程类
物理
热力学
作者
Ying Wu,Tian Han,Gang Wang,Zhongshan Liu,Rong Miao,Yu Fang
标识
DOI:10.1016/j.snb.2022.132739
摘要
As the most effective disinfectant, the safe-use of ClO 2 is based on proper concentrations. A big challenge in the determination of ClO 2 lies in reusability owing to its strong oxidative property. Herein, we report for the first time a nanofilm-based fluorescent sensor towards the high-performance detection of ClO 2 . The nanofilm was prepared via interfacially confined dynamic covalent condensation of a fluorescent o -carborane derivative (CB-2CHO) and calix[4]arenetetrahydrazide (CATH). The nanofilm as obtained is smooth and uniform. The thickness can be tuned at least from 80 nm to 400 nm. Meanwhile, the nanofilm is photochemically stable, and shows a Stocks shift of 193 nm. A fluorescent sensor constructed with the nanofilm depicted fast, sensitive, selective, and fully reversible sensing to ClO 2 vapor in air. Moreover, non-invasive detection of the chemical in aqueous phase with a detection limit of ~0.85 mg/L was realized via vapor sampling from the headspace of the solution. The linear range is from a few to 5000 mg/L. • A novel fluorescence nanofilm is prepared through interfacial confined dynamic covalent condensation. • The nanofilm is uniform, flexible, photostable and easy to synthesis. • The nanofilm showed fast, selective, sensitive, and highly reversible fluorescence response to ClO 2 . • With the nanofilm, a portable and user-friendly ClO 2 detector is built. • Traces of ClO 2 in swimming pool water can be detected using the detector.
科研通智能强力驱动
Strongly Powered by AbleSci AI