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首页> 外文期刊>ACS Macro Letters >Expanding the Scope of Polymerization-Induced Self-Assembly: Z-RAFT-Mediated Photoinitiated Dispersion Polymerization
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Expanding the Scope of Polymerization-Induced Self-Assembly: Z-RAFT-Mediated Photoinitiated Dispersion Polymerization

机译：扩大聚合诱导的自组装的范围：Z-筏介导的光灭绝分散聚合

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摘要

In this communication, we developed the first well-controlled Z-RAFT (RAFT = reversible addition fragmentation chain transfer) mediated polymerization-induced self-assembly (PISA) formulation based on photo initiated RAFT dispersion polymerization of tert-butyl acrylate (tBA) in ethanol/water (60/40, w/w) at room temperature using a Z-type macromolecular chain transfer agent (macro-CTA). Polymerizations proceeded rapidly via the exposure of visible-light irradiation (405 nm, 0.45 mW/cm(2)) with high monomer conversion (95%) being achieved within 1 h. A variety of polymer nano-objects (spheres, worms, and vesicles) with narrow molar mass distributions were prepared by this Z RAFT mediated PISA formulation. Silver nanoparticles were loaded with the vesicles via in situ reduction, which can be used as a catalyst for the reduction of methylene blue (MB) in the presence of NaBH4. Finally, gel permeation chromatography (GPC) analysis demonstrated that the corona block and the core-forming block could be cleaved by treating with excess initiator. This novel PISA formulation will greatly expand the scope of PISA and provide more mechanistic insights into the PISA research.
机译：在这种通信中，我们开发了基于丙烯酸叔丁酯（TBA）的光引发的筏子分散聚合的第一良好控制的Z-RAFT（RAFT =可逆添加碎片链转移）介导的聚合诱导的自组装（PISA）制剂使用Z型大分子链转移剂（Macro-CTA）在室温下乙醇/水（60/40，w / w）。聚合通过曝光可见光照射（405nm，0.45mW / cm（2）），在1小时内达到高单体转化（＆ 95％）。通过该Z筏介导的比萨制剂制备具有窄摩尔质量分布的各种聚合物纳米物体（球体，蠕虫和囊泡）。通过原位还原用囊泡将银纳米颗粒加载，其可以用作在NaBH 4存在下减少亚甲基蓝（MB）的催化剂。最后，凝胶渗透色谱（GPC）分析证明了电晕块和芯形成块可以通过用过量引发剂处理来裂解。这部小型比萨配方将大大扩大比萨范围，并为比萨研究提供更具机制的见解。

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  • 来源
    《ACS Macro Letters》 |2018年第2期|共15页
  • 作者

    Tan Jianbo; Li Xueliang; Zeng Ruiming; Liu Dongdong; Xu Qin; He Jun; Zhang Yuxuan; Dai Xiaocong; Yu Liangliang; Zeng Zhaohua; Zhang Li;

  • 作者单位

    Guangdong Univ Technol Sch Mat &

    Energy Dept Polymer Mat &

    Engn Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Dept Polymer Mat &

    Engn Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Dept Polymer Mat &

    Engn Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Dept Polymer Mat &

    Engn Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Dept Polymer Mat &

    Engn Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Dept Polymer Mat &

    Engn Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Dept Polymer Mat &

    Engn Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Dept Polymer Mat &

    Engn Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Dept Polymer Mat &

    Engn Guangzhou 510006 Guangdong Peoples R China;

    Sun Yat Sen Univ Sch Mat Sci &

    Engn Guangzhou 510275 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Dept Polymer Mat &

    Engn Guangzhou 510006 Guangdong Peoples R China;

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  • 正文语种 eng
  • 中图分类 有机化学;
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