聚乙烯亚胺凝胶光子晶体的制备和可视化pH传感

Preparation and pH Visual Sensing of Polyethyleneimine Hydrogel Photonic Crystal

采用乳液聚合法和毛细力渗透法将聚乙烯亚胺凝胶引入到光子晶体结构中,制备出了颜色鲜亮、结构均匀的聚乙烯亚胺凝胶光子晶体,并探索了其在不同pH值溶液中的传感。结果表明,聚乙烯亚胺凝胶光子晶体在溶液中pH响应迅速,具有良好的pH可逆性,实现了溶液中pH值的快速、灵敏、免标记及可视化传感。

We introduced polyethyleneimine hydrogel into photonic crystal structure by the crosslinking pol- ymerization method and capillary force osmosis method. We prepared polyethyleneimine hydrogel photonic crys- tal with bright color and uniform structure, and explored its pH visual sensing in the solutions with different pH values. Results show that polyethyleneimine hydrogel photonic crystal has rapid pH respondence and good pH reversibility,by which rapid,sensitive,free,and visual sensing of the solution pH value can be realized.