醇光引发聚合诱导自组装（光引发PISA）：一种制备基于聚（丙烯酸异冰片酯）的二嵌段共聚物纳米物体的快速方法。
Alcoholic Photoinitiated Polymerization-Induced Self-Assembly (Photo-PISA): A Fast Route toward Poly(isobornyl acrylate)-Based Diblock Copolymer Nano-Objects.
作者信息
Tan Jianbo, Huang Chundong, Liu Dongdong, Zhang Xuechao, Bai Yuhao, Zhang Li
机构信息
Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou 510006, China.
出版信息
ACS Macro Lett. 2016 Aug 16;5(8):894-899. doi: 10.1021/acsmacrolett.6b00439. Epub 2016 Jul 11.
We report a fast alcoholic photoinitiated polymerization-induced self-assembly (photo-PISA) formulation via photoinitiated RAFT dispersion polymerization of isobornyl acrylate (IBOA) in an ethanol/water mixture at 40 °C using a monomethoxy poly(ethylene glycol) (mPEG) based chain transfer agent. Polymerization proceeded rapidly via the exposure to visible light irradiation (405 nm, 0.5 mW/cm), and high monomer conversion (>95%) was achieved within 30 min. Kinetic studies confirmed that good control was maintained during the photo-PISA process, and the polymerization can be activated or deactivated by light. Finally, we demonstrated that a diverse set of complex morphologies (spheres, worms, or vesicles) could be achieved by varying reaction parameters, and a phase diagram was constructed.
我们报道了一种快速的乙醇光引发聚合诱导自组装（光引发PISA）配方，该配方通过在40℃下使用基于单甲氧基聚（乙二醇）（mPEG）的链转移剂，在乙醇/水混合物中对丙烯酸异冰片酯（IBOA）进行光引发RAFT分散聚合。通过暴露于可见光照射（405nm，0.5mW/cm），聚合反应迅速进行，并且在30分钟内实现了高单体转化率（>95%）。动力学研究证实，在光引发PISA过程中保持了良好的控制，并且聚合反应可以通过光来激活或失活。最后，我们证明了通过改变反应参数可以实现多种复杂形态（球体、蠕虫或囊泡），并构建了相图。
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