基于PEGPEA-高灵敏仿生光子晶体薄膜制备及应用  

Preparation and application of highly sensitive biomimetic photonic crystal thin films based on PEGPEA

作　　者：金志浩[1] 郑金直 武嘉 闫洋洋 JIN Zhihao;ZHENG Jinzhi;WU Jia;YAN Yangyang(College of Mechanical and Power Engineering,Shenyang University of Chemical Technology,Shenyang 110142,Liaoning,China;Facility Horticulture Laboratory of Universities in Shandong,Weifang University of Science and Technology,Weifang 262700,Shandong,China;Shandong Dongchen Ruisen New Material Technology Co.,Ltd.,Jinan 250200,Shandong,China)

机构地区：[1]沈阳化工大学机械与动力工程学院,辽宁沈阳110142 [2]潍坊科技学院山东高校设施园艺实验室,山东潍坊262700 [3]山东东辰瑞森新材料科技有限公司,山东济南250200

出　　处：《精细化工》2024年第9期1949-1957,共9页Fine Chemicals

基　　金：中国博士后科学基金资助项目(2023M732858)。

摘　　要：采用乳液聚合结合改良的Stӧber方法制备了单分散聚苯乙烯(PS)@SiO2核壳纳米微球,然后将其分散在聚(乙二醇)苯基醚丙烯酸酯(PEGPEA)中,形成非密集颗粒阵列后快速光聚合捕获规则阵列,制备了一种机械变色的光子晶体薄膜。采用SEM、光纤耦合光谱仪对光子晶体薄膜进行了表征,考察了PS@SiO2核壳纳米微球体积分数和粒径对光子晶体薄膜结构色的影响,并对光子晶体薄膜的力致变色机理进行了推测。结果表明,热处理改善了PS@SiO2核壳纳米微球的微观秩序,加快形成蛋白石光子晶体结构;光子晶体薄膜结构色随着PS@SiO2核壳纳米微球体积分数的增加或粒径的减小由红色向蓝色渐变;光子晶体薄膜具有的结构色反射率>60%、拉伸应变至少可达70%、灵敏度2.16 nm/%、响应速度1.9 nm/ms,反射波长调谐范围为151 nm;在100次拉伸/释放循环实验和25℃下维持拉伸状态3 d,恢复后光子晶体薄膜结构色保持不变。Monodisperse polystyrene(PS)@SiO_(2)core-shell nanometer microspheres were prepared by emulsion polymerization with an improved Stӧber method,dispersed in poly(ethylene glycol)phenyl ether acrylate(PEGPEA)to form a non-dense particle array.A mechanical discolored photonic crystal film was then synthesized from rapid photopolymerization trapping regular array,and characterized by SEM and optical fiber-coupled spectrometer.The influence of volume fraction and particle size of PS@SiO_(2)core-shell nanometer microspheres on the structure color of photonic crystal thin film were investigated,while the mechanism was further speculated.The results showed that the heat treatment changed the microstructure order of PS@SiO_(2)core-shell nanometer microspheres,which accelerated the formation of opal photonic crystal structure.The structure color of photonic crystals gradually changed from red to blue with the increase of PS@SiO_(2)core-shell nanometer microspheres volume fraction or the decrease of particle diameter.The photonic crystal thin film exhibited structural color reflectivity>60%,tensile strain at least up to 70%,sensitivity 2.16 nm/%,response speed 1.9 nm/ms,reflection wavelength tuning range 151 nm.After 100 stretch/release cycles and 3 d recovery at 25℃,the structure color of the photonic crystal film remained unchanged.

关 键 词：仿生 光子晶体 机械变色 视觉传感 防伪 功能材料 

分 类 号：TB34[一般工业技术—材料科学与工程] O734[理学—晶体学]