基于次氯酸根离子的新型比率型荧光探针及其应用

以2-苯并噻唑-5-甲基苯酚为原料,合成了一种基于次氯酸根离子的比率型荧光探针ZN1,并对其进行了次氯酸根离子的检测性能测试。结果表明:该探针可以快速灵敏、选择性地识别次氯酸根离子,其检测下限为0.96μmol/L,并将该探针应用于实际水样中次氯酸根离子含量的检测,在自来水、雨水中的回收率均大于84%。此外,利用质谱和核磁谱图开展的检测机理研究表明,探针的识别机理与次氯酸的氧化脱氢作用和激发态分子内质子转移(ESIPT)过程破坏有关。

A Novel Ratiometric Fluorescent Probe for Hypochlorite and its Application

Hypochlorite is widely used in the disinfection products for hard surface and water, and the detection of hypochlorite is very important. The ratiometric fluorescent probes have many advantages, such as high sensitivity, fast response, good selectivity and real-time monitoring, and the ratiometric probes could elim-inate the background interference well. Therefore, a ratiometric fluorescent probe ZN1 for hypochlorite was synthesized in this work. This probe possesses high speed, great sensitivity, and nice selectivity for de-tection of hypochlorite ions, and it has been successfully applied for the detection of hypochlorite in real water samples. Moreover, the sensing mechanism of the probe was studied by MS and NMR spectra.