高等学校化学学报 ›› 2017, Vol. 38 ›› Issue (12): 2163-2168.doi: 10.7503/cjcu20170272

• 分析化学 • 上一篇    下一篇

一种可用于检测苦味酸的水溶性共轭聚合物荧光传感器的制备及应用

刘吉林, 米红玉, 关明明, 郇延富, 费强, 张志权, 冯国栋()   

  1. 吉林大学化学学院, 长春 130023
  • 收稿日期:2017-06-07 出版日期:2017-12-10 发布日期:2017-11-21
  • 作者简介:联系人简介: 冯国栋, 男, 博士, 副教授, 主要从事纳米材料在光电化学检测和生物分析中的应用研究. E-mail: fenggd@jlu.edu.cn

Preparation and Application of Novel Fluorescence Chemical Sensor for Determining Trace Levels of Picronitric Acid Based on Water Soluble Conjugated Polymer

LIU Jilin, MI Hongyu, GUAN Mingming, HUAN Yanfu, FEI Qiang, ZHANG Zhiquan, FENG Guodong*()   

  1. College of Chemistry, Jilin University, Changchun 130023, China
  • Received:2017-06-07 Online:2017-12-10 Published:2017-11-21
  • Contact: FENG Guodong E-mail:fenggd@jlu.edu.cn

摘要:

制备了一种高灵敏的水溶性荧光共轭聚合物(PPE-OBS), 将其用于苦味酸的荧光检测. 利用质谱、 核磁共振波谱和红外光谱等方法对PPE-OBS进行了表征, 并对其检测苦味酸的条件进行了优化. 结果表明, 在硼酸-氢氧化钠缓冲溶液(pH=9.5)中作用20 min, 苦味酸对PPE-OBS荧光的猝灭效率最大. 在最优条件下, PPE-OBS检测苦味酸的线性范围为1.0~60 μmol/L(R2=0.999), 检出限为0.831 μmol/L(S/N=3). 将PPE-OBS制成荧光试纸用于检测环境样品中的苦味酸, 获得了较好的检测结果.

关键词: 水溶性荧光共轭聚合物, 苦味酸, 化学传感器, 荧光猝灭

Abstract:

A water soluble conjugated polymer{poly[2,5-bis(sodium 4-oxybutyrate)-1,4-phenylethyny-lene-alt-1,4-phenyleneethynylene], PPE-OBS}, was synthesized for the detection of picronitric acid(PA). PPE-OBS was characterized by means of mass spectrometry, NMR spectroscopy, infrared spectroscopy(IR), and so on. The experiment conditions and detection performance of PPE-OBS were systematically studied. The results show that the fluorescent quenching of PPE-OBS is the most efficient when the reaction time between PPE-OBS and PA is 20 min in the boric acid-sodium hydroxide buffer solution(pH=9.5). The results demonstrate that PPE-OBS as a sensor for PA has a good linear range from 1.0 to 60 μmol/L with the calculated limit of detection(LOD) to be 0.831 μmol/L. Meanwhile, PPE-OBS paper was applied to rapidly detecting PA in environmental water samples.

Key words: Water soluble fluorescence conjugated polymer, Nitrobenzene explosive, Chemical sensor, Fluorescence quenching

中图分类号: