Li Lu, Meng Tiantian, Zhang Wanbin, Su Ying, Wei Juan, Shi Xinwei, Zhang Guanghua
Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi'an 710021, China.
The New Style Think Tank of Shaanxi Universities (Research Center for Auxiliary Chemistry and New Materials Development), Shaanxi University of Science and Technology, Xi' an 710021, China.
Polymers (Basel). 2020 Jan 3;12(1):83. doi: 10.3390/polym12010083.
The detection of p-nitrophenol (PNP) is of great significance for assessment of environment pollution and potential health risks. In this study, based on inverse opal polymeric photonic crystals (IOPPCs), a selective and visual sensor for high-performance PNP detection is developed. Due to their unique optical properties, IOPPCs report events by change of color, which can easily be observed by the naked eye. Hydroxyethyl methacrylate (HEMA) was selected as the functional monomer with which to fabricate the IOPPCs. By precisely adjusting the molar ratio between the functional monomer and the crosslinker, the sensors were only able to be sensitive to a specific solution, thus realizing the visual, selective, and semi-quantitative detection of PNP. When the sensors were immersed in different concentrations of PNP solution, their Bragg diffraction wavelengths showed different redshifts. The color of the IOPPCs changed from green to red as the peak shift of Bragg diffraction occurred. In addition, the IOPPCs displayed good interference immunity and reusability.
对硝基苯酚（PNP）的检测对于评估环境污染和潜在健康风险具有重要意义。在本研究中，基于反蛋白石聚合物光子晶体（IOPPCs），开发了一种用于高性能PNP检测的选择性可视化传感器。由于其独特的光学性质，IOPPCs通过颜色变化报告事件，肉眼可轻松观察到。选择甲基丙烯酸羟乙酯（HEMA）作为制备IOPPCs的功能单体。通过精确调整功能单体与交联剂之间的摩尔比，使传感器仅对特定溶液敏感，从而实现了PNP的可视化、选择性和半定量检测。当传感器浸入不同浓度的PNP溶液中时，其布拉格衍射波长呈现不同程度的红移。随着布拉格衍射峰的移动，IOPPCs的颜色从绿色变为红色。此外，IOPPCs表现出良好的抗干扰性和可重复使用性。
