...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Macromolecular symposia >Cyclometalated Ruthenium(II) Complex as a Versatile Catalyst for Living/Controlled Radical Polymerization of Hydrophobic and Hydrophilic Monomers
【24h】

Cyclometalated Ruthenium(II) Complex as a Versatile Catalyst for Living/Controlled Radical Polymerization of Hydrophobic and Hydrophilic Monomers

机译：环金属化钌（II）配合物作为多功能催化剂，用于疏水/亲水单体的活性/受控自由基聚合

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Cyclometalated complex, cis-[Ru(phpy)(phen)(MeCN)_2]PF_6, bearing strongly bound ligands (phpy=2-phenylpyridine, phen=1, 10- phenantroline) and relatively labile (MeCN) ligands, in conjunction with ethyl 2-bromoisobutyrate (EBiB), was used for radical polymerization of three hydrophobic, styrene (St), methyl methacrylate (MMA), n-butyl acrylate (BA), and one hydrophilic, 2-hydroxyethyl methacrylate (HEMA), monomers. The polymerizations were fast and reasonably controlled; the molecular weights increased with conversion and were close to the calculated values. The best control was achieved in polymerization of St. The complex was able to mediate this polymerization with acceptable rate and level of control even at a monomer/catalyst ratio of 2000. The living character of the polymerizations was confirmed by chain extension experiments; the degree of polymer "livingness" was less for PMMA than for PSt. Because of ionic nature, the complex was well soluble in MeOH and thus catalyzed polymerization of HEMA under homogeneous conditions at 50℃.
机译：环金属配合物，顺式-[Ru（phpy）（phen）（MeCN）_2] PF_6，带有强结合的配体（phpy = 2-苯基吡啶，phen = 1，10-菲咯啉）和相对不稳定的（MeCN）配体，以及将2-溴异丁酸乙酯（EBiB）用于三种疏水性苯乙烯（St），甲基丙烯酸甲酯（MMA），丙烯酸正丁酯（BA）和一种亲水性甲基丙烯酸2-羟乙酯（HEMA）的自由基聚合。聚合反应快速，合理地控制;分子量随转化率增加而增加，接近计算值。在St的聚合反应中实现了最佳控制。即使在2000的单体/催化剂比下，该络合物也能够以可接受的速率和控制水平介导该聚合反应。 PMMA的聚合物“活性”程度小于PSt。由于离子性质，该配合物很好地溶于MeOH，因此在均相条件下于50℃催化HEMA聚合。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号