通过可逆加成-断裂链转移（RAFT）聚合合成位点特异性带电金属聚合物
Synthesis of Site-specific Charged Metallopolymers via Reversible Addition-Fragmentation Chain Transfer (RAFT) Polymerization.
作者信息
Sha Ye, Zhu Tianyu, Rahman Anisur, Cha Yujin, Hwang Jihyeon, Luo Zhenyang, Tang Chuanbing
机构信息
College of Science, Nanjing Forestry University, Nanjing, 210037, PR China.
Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States.
出版信息
Polymer (Guildf). 2020 Jan 20;187. doi: 10.1016/j.polymer.2019.122095. Epub 2019 Dec 17.
Site-specific cobaltocenium-labeled polymers are synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization using cobaltocenium-labeled chain transfer agents. These chain transfer agents show counterion-dependent solubility. Based on the chemical structure of the chain transfer agents, single cobaltocenium moieties are dictated to be in predetermined locations at either the center or terminals of the polymer chains. Polymerization of hydrophobic monomers (methyl methacrylate, methyl acrylate and styrene) and hydrophilic monomers (2-(dimethylamino)ethyl methacrylate and methacrylic acid) is demonstrated to follow a controlled manner based on kinetic studies. Cobaltocenium-labeled polymers with molecular weights greater than 100,000 Da can be prepared by using a difunctional chain transfer agent. Photophysical properties, electrochemical properties, thermal properties and morphology of the cobaltocenium-labeled polymers are also investigated.
通过使用钴茂标记的链转移剂，采用可逆加成-断裂链转移（RAFT）聚合反应合成了位点特异性钴茂标记的聚合物。这些链转移剂表现出反离子依赖性溶解度。基于链转移剂的化学结构，单个钴茂部分被指定位于聚合物链的中心或末端的预定位置。基于动力学研究表明，疏水性单体（甲基丙烯酸甲酯、丙烯酸甲酯和苯乙烯）和亲水性单体（甲基丙烯酸2-（二甲氨基）乙酯和甲基丙烯酸）的聚合反应遵循可控方式。通过使用双官能链转移剂，可以制备分子量大于100,000 Da的钴茂标记聚合物。还研究了钴茂标记聚合物的光物理性质、电化学性质、热性质和形态。
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