Citation: Zhong Lin, Haitao Deng, Jianhang Lu, Peisheng Zhang, Guobin Li, Zhihua Zhou, Jian Chen. 细乳液聚合制备光致变色胶体粒子及其防伪应用[J]. University Chemistry, ;2022, 37(5): 211003. doi: 10.3866/PKU.DXHX202110031 shu

细乳液聚合制备光致变色胶体粒子及其防伪应用

1.
School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411100, Hunan Province, China;
2.
Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, Hunan University of Science and Technology, Xiangtan 411100, Hunan Province, China

Received Date: 12 October 2021

细乳液聚合技术具有操作简便、绿色经济、适用范围广等优点，可以很好地应用于本科生新创性实验教学中；同时，通过在细乳液聚合中引入具有光致变色特性的螺吡喃衍生物，使制备的胶体粒子具有明显的光致变色和荧光开关特性，还可以进一步激发学生的实验兴趣和对科研的亲近感。本文通过一步细乳液聚合法，在75℃下聚合反应3 h制备了含螺吡喃衍生物——2-（3’，3’-二甲基-6-硝基螺[苯并吡喃-2，2’-吲哚啉]-1’-基）乙基-甲基丙烯酸酯（SPMA）的光致变色胶体粒子，利用激光粒度分析仪、紫外-可见吸收光谱仪和荧光光谱仪对胶体粒子进行粒径和光谱测试。结果表明，所制备的胶体粒子的粒径在60 nm左右，它在紫外光和可见光刺激下表现出明显的光致变色和荧光开关性质。初步的防伪应用表明其在荧光防伪上具有很大的应用价值。
- Miniemulsion polymerization,
- Photochromic,
- Colloidal particles,
- Spiropyran,
- Anti-counterfeiting
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