用于检测过硼酸根离子的新型比值式荧光探针  

A Novel Ratiometric Fluorescent Probe for Detection of Perborate

作　　者：臧启光 陈颂[1] 侯志林[1] 李娟[1] 刘又年[1,2] 

机构地区：[1]中南大学化学化工学院,长沙410083 [2]有色金属资源化学教育部重点实验室,长沙410083

出　　处：《分析化学》2014年第1期118-122,共5页Chinese Journal of Analytical Chemistry

摘　　要：设计合成了一种基于过硼酸根（BO3^-）催化酯键水解机理的新型比值式荧光探针。此探针在pH=7．4的生理环境下，在BO3^-的存在时，其荧光发射光谱由419nm红移至552nm。利用这一特性，采用此荧光探针对BO3^-进行定量检测，检测的线性响应范围为0．1～4．0mmol/L，检出限为7．8μmol/L。且对常见阴离子及氧化性试剂有较好的选择性。通过对响应前后分子的能级计算，解释了分子内电荷转移机理（ICT）导致的光谱红移现象。A new ratiometric fluorescent probe was synthesized via the mechanism that desorption of ethanoyl on aromatic phenols mildly and selectively, by the assistance of perborate. A red-shift of 133 nm from 419 nm to 552 nm occurred after mixing perborate with probe solution in the physiological environment （ pH = 7.4 ）. The linear response range was 0.1-4.0 mmol/L, and the detection limit was 7.8 μ mol/L. This probe has a good selectivity to common anions. Molecular energy level calculation confirmed a red-shift on fluorescence spectrum caused by intra-molecular charge transfer mechanism （ICT）.

关 键 词：荧光探针 过硼酸根 比值式 

分 类 号：O657.3[理学—分析化学]