A highly-specific photoelectrochemical platform based on carbon nanodots and polymers functionalized organic-inorganic perovskite for cholesterol sensing
A highly-specific photoelectrochemical platform based on carbon nanodots and polymers functionalized organic-inorganic perovskite for cholesterol sensing
复制标题
基于碳纳米点和聚合物功能化有机-无机钙钛矿的高特异性光电化学平台，用于胆固醇传感
DOI：
10.1016/j.talanta.2020.122050
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发表时间：
2021-01-06
期刊：
影响因子：
6.1
通讯作者：
Hu, Xiao-Ya
中科院分区：
文献类型：
--
作者：
Chen, Lu;Song, Minxia;Hu, Xiao-Ya
本文采用原位合成法将碳纳米点（CND）和聚偏氟乙烯（PVDF）作为添加剂引入钙钛矿相CH 3 NH3 PbI 3中，制备了PVDF-CH 3 NH3 PbI 3 @ CND复合材料。探索了PVDF-CH 3 NH3 PbI 3 @CNDs在光电化学传感中的应用。通过简单的热聚合过程将一种能特异识别胆固醇（CHO）的分子印迹聚合物（MIP）锚定在PVDF-CH 3 NH3 PbI 3 @ CND上，然后用正己烷洗脱。利用MIPs@ PVDF-CH 3 NH3 PbI 3 @CNDs平台，建立了一种无标记、灵敏的CHO光电化学检测方法。CHO的检测限为2.1 × 10 ~（-14）mol/L，低于现有的CHO检测方法。在我们看来，这个平台可以扩展到许多其他分析物。这一研究结果为提高有机-无机钙钛矿复合材料的性能和拓宽其应用范围提供了新的认识。
Herein, we reported the introduction of carbon nanodots (CNDs) and polyvinylidene fluoride (PVDF) as additives into perovskite CH3NH3PbI3 through in situ synthesis to prepare PVDF-CH3NH3PbI3@CNDs composite, which demonstrated improved water tolerance and mechanical stability. The application of PVDF-CH3NH3PbI3@CNDs for photoelectrochemical sensing was then explored. A molecularly imprinted polymer (MIP) that could specifically recognize cholesterol (CHO) was anchored to PVDF-CH3NH3PbI3@CNDs via a simple thermal polymerization process, followed by elution with hexane. A label-free and sensitive photoelectrochemical method for CHO detection was achieved by using the MIPs@PVDF-CH3NH3PbI3@CNDs platform. The detection limit for CHO was 2.1 x 10(-14) mol/L, lower than most of the existing CHO detection methods. In our perception, this platform can be extended to numerous other analytes. This research result may provide a new understanding to improve the performance and broaden the application range of organic-inorganic perovskites.