溶剂/光双重响应性反蛋白石光子晶体-聚合物复合薄膜  

A Solvent/Light Dual Responsive Inverse Opal Photonic Crystal Polymer Composite Film

作　　者：王亚欣 陈于蓝 Ya-xin Wang;Yu-lan Chen(College of Science,Tianjin University,Tianjin 300350;College of Chemistry,Jilin University,Changchun 130012)

机构地区：[1]天津大学理学院,天津300350 [2]吉林大学化学学院,长春130012

出　　处：《高分子学报》2025年第4期590-597,共8页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号21975178)资助.

摘　　要：以结构色光子晶体材料为模板,将偶氮苯与丙烯酸酯类单体和交联剂共聚,通过聚合物亲疏水性的调控,成功制备了一种对溶剂和光双重刺激响应的反蛋白石结构复合薄膜.通过测试薄膜的反射光谱和接触角,确定了聚合物的最佳组成.利用不同直径的二氧化硅光子晶体获得的薄膜在不同溶剂中实现了可见光范围的宽波段反射.这种具备双重响应性质的复合薄膜在紫外光照射下可以写入信息,并在干燥环境中加密图案,而在溶剂中能够快速、高对比度地显示图案,有望应用于高级别的防伪、信息加密与存储、传感等领域.Recently,photonic crystals and their composite films have attracted much attention due to their unique optical properties and promising applications in optical sensors,optical communication,anti-counterfeiting techniques and so on.Photonic crystal-polymer composite films with multimodal responsiveness are highly desirable yet still limited.In this work,a new kind of inverse opal composite polymer films responsive to both solvent and light has been successfully prepared,by copolymerizing azobenzene(AzoMMA)with different hydrophilic/hydrophobic acrylic monomers(butyl methacrylate(BMA),poly(ethylene glycol)acrylate(PEGDA))and cross-linking agent(ethoxylated trimethylolpropane triacrylate(ETPTA))and using structural colored photonic crystals as the template.The optimal composition of the polymers is determined(AzoMMA:PEGDA:BMA:ETPTA=1:4:8:1,molar ratio)according to the reflection spectra and contact angle testing.Wideband visible light reflection is achieved for films that are obtained by using silica photonic crystals with different diameters and in different solvents.This composite film with dual responsive properties can be used to store information under ultraviolet light irradiation,encrypt patterns in its dry state,and decrypt the information quickly and with a high-contrast visual effect in solvents.This material is thus expected to be applied in high-level anti-counterfeiting,encryption storage of information,sensing and other fields.

关 键 词：偶氮苯 反蛋白石 双重刺激响应 光子晶体 防伪加密 

分 类 号：O631.3[理学—高分子化学]