To address the challenge of metal contamination, a “graft from” approach via organocatalyzed atom transfer radical polymerization (O‐ATRP) is developed to synthesize poly(vinylidene fluoride‐co‐chlorotrifluoroethylene) (P(VDF‐co‐CTFE)) graft copolymers. N‐phenylphenothiazine is utilized as a model organic photoredox catalyst for catalyzing the (co)polymerization of methyl methacrylate (MMA), methacrylate (MA), and n‐butyl acrylate (BA). By employing this technique, high temporal control of polymerization and graft content are achieved. A series of P(VDF‐co‐CTFE)‐g‐PMMA, P(VDF‐co‐CTFE)‐g‐PMA, and P(VDF‐co‐CTFE)‐g‐PBA is prepared under mild conditions. The resultant graft copolymer can be used as macroinitiator to re‐initiate O‐ATRP to synthesize P(VDF‐co‐CTFE)‐g‐(PMMA‐b‐PMA), which might exhibit the potential application as novel dielectric material.

中文翻译：

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通过有机催化的原子转移自由基聚合改性聚偏二氟乙烯-共氯三氟乙烯

为了应对金属污染的挑战，开发了一种通过有机催化的原子转移自由基聚合（O-ATRP）的“接枝”方法来合成聚偏二氟乙烯-co-氯三氟乙烯（P（VDF- co- CTFE））接枝共聚物。N-苯基吩噻嗪用作模型有机光氧化还原催化剂，用于催化甲基丙烯酸甲酯（MMA），甲基丙烯酸酯（MA）和丙烯酸正丁酯（BA）的（共）聚合。通过采用该技术，可以实现对聚合反应和接枝物含量的高时间控制。一系列P（VDF- co- CTFE）-g- PMMA，P（VDF- co- CTFE）-g- PMA和P（VDF- co- CTFE）-g‐PBA在温和的条件下制备。所得的接枝共聚物可以用作大分子引发剂，以重新引发O-ATRP来合成P（VDF- co- CTFE）-g-（PMMA- b- PMA），这可能显示出作为新型介电材料的潜在应用。