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首页> 外文期刊>RSC Advances >Facile, simple, and inexpensive ionic liquid, 1-phenyl-3-methylimidazole diphenyl phosphate, as an efficient phosphorus-based ligand for copper-catalyzed reverse atom transfer radical polymerization of methyl methacrylate
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Facile, simple, and inexpensive ionic liquid, 1-phenyl-3-methylimidazole diphenyl phosphate, as an efficient phosphorus-based ligand for copper-catalyzed reverse atom transfer radical polymerization of methyl methacrylate

机译：容易，简单，廉价的离子液体，1-苯基-3-甲基咪唑二苯基磷酸盐，作为铜催化逆原子的基于磷基配体，转移甲基丙烯酸甲酯的自由基聚合

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摘要

Ligands play a vital role in atom transfer radical polymerization (ATRP) in solubilizing the transition-metal salt and adjusting the redox potential of the metal center. In general, nitrogen ligands work particularly well for copper-mediated ATRP, while phosphorus-based ligands are rarely used due to less effectiveness. Therefore, this work aims to explore for the first time a facile, simple, and inexpensive ionic liquid (IL), 1-phenyl-3-methylimidazole diphenyl phosphate ([Phmim][Ph2PO4]), as an efficient phosphorus ligand for CuBr2-mediated reverse ATRP. The key to success is ascribed to stronger complexation of the IL ligand with the catalyst and higher solubility of the resulting complex. The polymerizations proceeded in a controlled/"living" fashion, as evidenced by first-order kinetics, linear evolution of molecular weights with monomer conversion, and narrow molecular weight distributions. Effects of various experimental parameters-solvent, reaction temperature, IL, and molar ratio of CuBr2/[Phmim][Ph2PO4]-on the polymerization were investigated in detail. Furthermore, H-1 NMR analysis confirmed the halogencontaining chain-end functionality of the resultant polymer.
机译：配体在原子转移自由基聚合（ATRP）中发挥着至关重要的作用，在溶解过渡金属盐并调节金属中心的氧化还原潜力。通常，氮配体特别适用于铜介导的ATRP，而由于效率较小，很少使用基于磷的配体。因此，这项工作旨在首次探索容易，简单且廉价的离子液体（IL），1-苯基-3-甲基咪唑二苯基磷酸（[PHMIM] [PH2PO4]），作为CUBR2的有效磷配体介导的反向ATRP。成功的关键符合IL配体与催化剂的络合和所得复合物的溶解度更高。聚合以受控/“生活”时尚进行，如一流的动力学所证明，单体转化率的分子量的线性演变，以及窄的分子量分布。详细研究了各种实验参数溶剂，反应温度，IL和摩尔比的效果 - 详细研究了聚合的聚合。此外，H-1 NMR分析证实了所得聚合物的卤素链末端官能团。

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  • 来源
    《RSC Advances》 |2017年第71期|共7页
  • 作者

    Liu Xiao-hui; Zhu Qian; Zhang Yan-guang; Zhang Qiu-yan; Ding Chen; Li Jun;

  • 作者单位

    Tianjin Polytech Univ Sch Mat Sci &

    Engn State Key Lab Separat Membranes &

    Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mat Sci &

    Engn State Key Lab Separat Membranes &

    Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mat Sci &

    Engn State Key Lab Separat Membranes &

    Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mat Sci &

    Engn State Key Lab Separat Membranes &

    Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mat Sci &

    Engn State Key Lab Separat Membranes &

    Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mat Sci &

    Engn State Key Lab Separat Membranes &

    Membrane Proc Tianjin 300387 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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