光致润湿性变化涂层光敏剂的研究进展

Research Progress in Photosensitizer for Coatings with Photo-induced Wettability Change

润湿性变化涂层可通过外界刺激改变润湿性而备受关注,近年来,光刺激由于其方便、快捷、无直接接触等特性成为了可逆润湿性改变的最佳策略。本文总结对比了润湿性变化涂层中所用到的无机与有机光敏剂,分析结果表明:无机光敏剂改性的涂层接触角变化大但恢复初始润湿性速度较慢;有机光敏剂润湿性响应速度快,然而部分有机光敏剂具有毒性、致癌性等特点。因此,为适应更多领域的应用,具有更多特殊功能且通过化学键连接的有机光敏剂是未来光致润湿性涂层的研究方向,同时如何通过掩蔽反应降低有机光敏剂的毒性与致癌性也是未来的研究重点。

Wettability changing coatings have attracted much attention because they can change wettability by external stimulation.In recent years,light stimulation has become the best strategy for reversible wettability change due to its convenience,rapidity and no direct contact.In this paper,the inorganic and organic photosensitizers used in wettability change coatings were summarized and compared.The analysis results showed that the contact angle of coatings modified by inorganic photosensitizer were changed greatly,but the speed of restoring to the initial wettability was slow.he response speed of the wettability of organic photosensitizer was fast,but part of them was toxicity and carcinogenicity.Therefore,organic photosensitizers with more special functions and linked by chemical bonds was the research direction of photo-induced wetting coatings,and how to reduce the toxicity and carcinogenicity of organic photosensitizers through masking reaction would also be the focus of research in the future.