A Selective Colorimetric Sensor for Pb2+ Detection by Using Phenylboronic Acid Functionalized Polydiacetylene Liposomes
A Selective Colorimetric Sensor for Pb2+ Detection by Using Phenylboronic Acid Functionalized Polydiacetylene Liposomes
复制标题
使用苯硼酸功能化聚二乙炔脂质体检测 Pb2 的选择性比色传感器
DOI：
10.1007/s13233-020-8006-3
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发表时间：
2019-09
影响因子：
2.4
通讯作者：
Yang Guang
中科院分区：
文献类型：
--
作者：
Zhang Siyu;Shi Baoli;Yang Guang
由于Pb2+对人类和其他生物的脑和神经系统有很高的毒性，设计和制作一种可靠、灵敏的水溶液中Pb2+的检测方法越来越受到科学家的关注。本文设计了一种新型苯基硼酸功能化聚二乙炔脂质体比色荧光传感器，用于水溶液中Pb2+的检测。单体之间的摩尔比为4：1，10，12-十五碳二元酸和苯基硼酸功能化的五碳二元酸不仅为Pb2+提供了足够的结合部位，而且还中断了与颜色和荧光变化相关的聚二乙炔的有效π连接主链。与其他金属离子相比，只有Pb2+能引起变色和荧光增强。此外，杂化PDA脂质体具有较高的灵敏度、较快的响应时间(10 S)和对Pb2+的合理检出限(0.1µM)。本工作不仅为Pb2+检测传感器的制备提供了一种通用的方法，而且对于深入理解基于聚二乙炔材料的颜色变化具有重要的基础价值，并可能为制备一种识别其他金属离子的新方法铺平道路。
Due to the high toxicity for brain and the nervous system of humans and other living organisms, the design and fabrication of a robust and sensitive method for the detection of Pb2+ in the aqueous solution has attracted the increasing attention among scientists. Herein, a colorimetric and fluorometric sensor for the detection of Pb2+ in the aqueous solution by incorporating a new phenylboronic acid functionalized polydiacetylene liposome was designed. The molar ratio of 4:1 between the monomers, 10,12-pentacosadiynoic acid (PCDA) and phenylboronic acid functionalized PCDA (PCDA-pBA) not only offered sufficient binding sites for Pb2+, but also interrupted the efficient π-conjugation backbone of polydiacetylene (PDA) chains associated with the color and fluorescence changes. Compared with other metal ions, only Pb2+ could cause the color change and the fluorescence enhancement. Moreover, the hybrid PDA liposomes exhibited high sensitivity, fast response time (10 s), and a reasonable detection limit for Pb2+ (0.1 µM). This work not only provides a versatile methodology for the fabrication of sensors for Pb2+ detection, but also is of great fundamental value for a deeper understanding of the complexion-induced color changes based on polydiacetylene materials, and may pave the way for fabrication a new method for recognizing other metal ions.
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