大面积溶剂响应性光子晶体薄膜的制备及应用  

Preparation and application of large area solvent-responsive photonic crystal films

作　　者：龚立昊 虞灿义 张学君 孙加龙 王梁彬 张洪吉 GONG Lihao;YU Canyi;ZHANG Xuejun;SUN Jialong;WANG Liangbin;ZHANG Hongji(Key Laboratory of Synthesis and Biological Colloid,Ministry of Education,School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,Jiangsu,China;School of Materials Science and Engineering,Anhui University of Science&Technology,Huainan 232000,Anhui,China;Dynamic New Materials(Maoming)Co.,Ltd.,Maoming 525000,Guangdong,China;Maoming Green Chemical Industry Research Institute,Maoming 525000,Guangdong,China)

机构地区：[1]江南大学化学与材料工程学院合成与生物胶体教育部重点实验室,江苏无锡214122 [2]安徽理工大学材料科学工程学院,安徽淮南232000 [3]德纳新材料(茂名)有限公司,广东茂名525000 [4]茂名绿色化工研究院,广东茂名525000

出　　处：《精细化工》2025年第2期449-454,共6页Fine Chemicals

基　　金：“扬帆计划”项目(MMGCIRI-2022YFJH-J-002)。

摘　　要：以苯乙烯(St)、丙烯酸正丁酯(BA)、甲基丙烯酸烯丙酯(AMA)为单体,采用半逐步乳液聚合法制得了P(St-BA-AMA)胶体微球,通过热辅助自组装方法制备了光子晶体薄膜。采用FTIR、SEM、DSC、微型光纤光谱仪对样品进行了表征和测试。考察了胶体微球粒径、成膜温度、响应溶剂对光子晶体薄膜呈现结构色的影响,探究了光子晶体薄膜在图案化防伪、水响应纸张制备方面的应用。结果表明,通过调控种子乳液质量可以制备平均粒径在185~272 nm的胶体微球,且其粒径大小均一;由平均粒径为185、210、227、245和272 nm胶体微球制备的光子晶体薄膜结构色分别为紫色、蓝色、绿色、橙色和红色;粒径为210 nm的胶体微球制备的光子晶体薄膜经水、无水乙醇、乙酸浸润后,分别呈现紫色、蓝色、绿色的结构色;成膜温度为40~100℃时,光子晶体薄膜表面胶体微球的周期性排列保持不变,具备自身的稳定性。光子晶体薄膜已应用于图案化防伪、水响应纸张制备,可防止遇到结构色显色与背景色相同导致防伪效果不明显的问题,光子晶体薄膜可反复书写-擦除。Photonic crystal films were prepared via thermal assisted self-assembly of P(St-BA-AMA)colloidal microspheres,which were synthesized from semi-stepwise emulsion polymerization of styrene(St),n-butyl acrylate(BA)and allyl methacrylate(AMA).The samples obtained were characterized and analyzed by FTIR,SEM,DSC and micro-optical fiber spectrometer.The effects of colloidal microsphere particle size,film forming temperature and response solvent on the structural color of photonic crystal films were investigated,and the application of photonic crystal films in patterned anti-counterfeiting and water-responsive paper preparation was explored.The results showed that colloidal microspheres with an average particle size of 185~272 nm could be obtained by adjusting the mass of seed emulsion,and the particle size was uniform.The structural colors of photonic crystal films prepared from 185,210,227,245 and 272 nm colloidal microspheres were purple,blue,green,orange and red,respectively.The photonic crystal films prepared by 210 nm colloidal microspheres,when soaked in water,anhydrous ethanol and acetic acid, exhibited structural colors of purple, blue and green, respectively. When the film forming temperature was 40~100 ℃, the periodic arrangement of colloidal microspheres on the surface of photonic crystal film remained unchanged and retained their own stability. When applied to patterned anti-counterfeiting and water-responsive paper preparation, the photonic crystal film could prevent the problem of unclear anti-counterfeiting effect caused by the same structural color and background color, and could be repeatedly written as well as erased.

关 键 词：光子晶体 结构色 丙烯酸酯 薄膜 溶剂响应性 图案化防伪 水响应纸张 

分 类 号：O734[理学—晶体学] TB383.2[一般工业技术—材料科学与工程]