一种用于次氯酸根实时高灵敏度检测的络合物基荧光探针
An Ensemble-Based Fluorescent Probe for Real-Time and High Sensitive Detection of Hypochlorite
程晓红 1刘发龙 2孙进博 1张锐3
作者信息
- 1. 湖北文理学院 低维光电材料与器件湖北省重点实验室 湖北襄阳 441053
- 2. 湖北航天化学技术研究所 湖北襄阳 441053
- 3. 湖北文理学院化学工程学院 湖北襄阳 441053
- 折叠
摘要
报道了一个实时检测次氯酸根阴离子的荧光探针TS1.首先,铜离子的引入可与化合物TS1形成稳定的络合物TS1-Cu,导致溶液荧光被极大地猝灭.然后,继续加入次氯酸根,由于次氯酸根的强氧化性,可诱导TS1中席夫碱发生水解反应,并转化为醛类化合物,导致溶液荧光明显增强.因此,络合物TS1-Cu可实现对次氯酸根的快速实时检测,且检测限低至120nmol/L.重要的是,该络合物体系可成功地应用于商业消毒剂样品中次氯酸根的实际检测.
Abstract
A novel fluorescent probe TS1 for real-time monitoring of hypochlorite was reported.The introduction of Cu2+could lead to the formation of stable complex TS1-Cu and simultaneous remarkable fluorescence quenching.Next,"off-on"fluorescence changes of TS1-Cu were proceeded by the subsequent addition of hypochlorite,which induced the hydrolytic cleavage of the Schiff base in TS1 and the transformation to strongly fluorescent aldehyde.TS1-Cu could recognize hypo-chlorite through an instantaneous marked fluorescence enhancement with the detection limit as low as 120 nmol/L.Further-more,the sensitive and rapid detection of hypochlorite with TS1-Cu for the practical application was also performed in com-mercial disinfectant samples.
关键词
荧光探针/实时响应/络合物基/次氯酸根/实际应用Key words
fluorescent probe/real-time response/ensemble-based/hypochlorite/practical application引用本文复制引用
基金项目
国家自然科学基金(21502047)
湖北省自然科学基金(2022CFB779)
出版年
2024
NETL
NSTL
万方数据