一种氟离子荧光传感器分子的合成及性能研究

Synthesis and Properties of a Fluoride Ion Fluorescence Chemosensor

氟离子是一种电负性极强,半径最小的负离子,在日常生活的各个方面起着重要的应用.利用氟离子诱导硅氧键断裂这一经典反应,设计合成一种含有四个硅氧键的苝的衍生物B,实现了对F-的高效选择性、高灵敏度识别.该传感器分子对F-有很快的响应速度,在1 min左右即可完成,而且探针分子B对F-的检测限达到3.5×10^(-8) mol·L^(-1).

Fluoride ion is an anion with the high electronegativity and the smallest radius. It has important application in all aspects of daily life. In this paper, based on the cleavage of Si-O bond induced by fluoride ions, a novel derivative of perylene B which contains four silicon oxygen bond was designed and synthesized, and this fluorescent chemosensor could recognize F^- with good selectivity and high sensitivity. The probe molecule had a fast response time for F^- and the sensing procedure could be completed in about 1 min, and the detection limit of F^- of the probe molecule B reached 3.5×10^-8 mol·L^-1.