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首页> 外文期刊>Journal of Applied Polymer Science >Fabrication of imprinted photonic films via predesigned multiple UV-polymerizations and their ability to detect solvents and metal ions in aqueous solution
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Fabrication of imprinted photonic films via predesigned multiple UV-polymerizations and their ability to detect solvents and metal ions in aqueous solution

机译：通过预测的多紫外聚合制备压印的光子薄膜及其检测水溶液中溶剂和金属离子的能力

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摘要

To synthesize photonic films without a chiral dopant, a predesigned multiple photopolymerization process was carried out. The photonic films were prepared by the photopolymerization of a mixture of chiral nematic liquid crystals. After polymerization, the chiral dopant, CB15, was removed and recycled. The imprinted photonic polymer films showed Bragg reflection without the presence of the chiral dopant. Upon the sensing of solvents in aqueous solution, significant color changes and peak shifts were observed by the naked eye and ultraviolet-visible spectroscopy, respectively. A linear calibration curve between the central wavelength of the reflection band of the fabricated imprinting film and the volume ratio of 1,4-dioxane in water was observed. Furthermore, the sensing of chloroform content in methanol, ethanol, and acetone via the imprinted film were also investigated. The results suggest that the synthesized imprinted photonic films can detect different kinds of mixed solvents. The sensing properties of the photonic films were further improved by copolymerization with a rhodamine-derived monomer. The synthesized modified photonic films can detect heavy metal ions in aqueous solution. This study reports a novel, recyclable, and easy approach to detect organic solvents and copper ions in aqueous solution.
机译：为了合成不含手性掺杂剂的光子薄膜，进行了预先设计的多重光聚合过程。通过手性向列相液晶混合物的光聚合制备了光子薄膜。聚合后，去除并回收手性掺杂剂CB15。在没有手性掺杂的情况下，印迹光子聚合物薄膜表现出布拉格反射。对水溶液中的溶剂进行传感后，肉眼和紫外可见光谱分别观察到显著的颜色变化和峰移。观察到所制备的压印膜反射带的中心波长与水中1,4-二氧六环的体积比之间的线性校准曲线。此外，还研究了通过印迹膜对甲醇、乙醇和丙酮中氯仿含量的传感。结果表明，合成的印迹光子薄膜可以检测不同种类的混合溶剂。通过与罗丹明衍生单体共聚，进一步改善了光子薄膜的传感性能。合成的改性光子薄膜可以检测水溶液中的重金属离子。本研究报告了一种新的、可回收的、简单的方法来检测水溶液中的有机溶剂和铜离子。

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