吡啶并氟硼荧光染料的构建及在苦味酸识别中的应用研究

Construction of Pyridine-boron Dipyrromethene Dye and Application in Picrate Recognition

以3-吡啶甲醛和2,4-二甲基吡咯为原料,合成了吡啶并氟硼荧光染料探针mPBP。通过~1HNMR和ESI-MS进行了结构表征。在含80%DMSO水溶液中,荧光探针对苦味酸(PA)具有良好的选择性和灵敏度。探针mPBP不到30 s就能够与PA完全反应,可以快速、高效地识别PA,能够满足现场快速检测识别的要求。荧光探针mPBP与不同浓度的PA呈现良好的线性关系,最低检测浓度为12.58 nmol/L。探针mPBP成功的应用于河水样品中加标PA含量的检测,获得了很好的回收率(96.0%~105.0%)。另外,明显的溶液颜色变化(亮绿色到无色),可以作为快速可视化识别复杂环境样品中PA的化学传感器。

3-Pyridine formaldehyde and 2,4-dimethyl pyrrole as raw materials,fluorescent probe mPBP was synthesized based on pyridine-boron dipyrromethene dye.The structure of probe was characterized by ~1HNMR and ESI-MS.Fluorescent probe has good selectivity and sensitivity of PA in water containing 80% DMSO aqueous solution.Probe mPBP can react with PA completely less than 30 s,can quickly and effectively identify PA,can meet the requirements of on-site rapid detection of recognition.The fluorescence probe mPBP showed a good linear relationship with different concentrations of PA,and the limit of detection was 12.58 nmol/L.Probe mPBP successful applied in river water samples to add the PA content detection,obtained the very good recovery rate(96.0%~105.0%).In addition,the color change of the solution was very obvious(light green to colorless),which can be used as a quick visual identification of PA-chemosensor in a complex environment sample.