Alcoholic Photoinitiated Polymerization-Induced Self-Assembly (Photo-PISA): A Fast Route toward Poly(isobornyl acrylate)-Based Diblock Copolymer Nano-Objects

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• 作者：Jianbo Tan ; Chundong Huang ; Dongdong Liu ; Xuechao Zhang ; Yuhao Bai ; Li Zhang
• 刊名：ACS Macro Letters
• 出版年：2016
• 出版时间：August 16, 2016
• 年：2016
• 卷：5
• 期：8
• 页码：894-899
• 全文大小：484K
• 年卷期：0
• ISSN：2161-1653

文摘

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/cm²), 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.