Designing Loop and Branch Polymer Topology with Cationic Star Telechelics through Effective Selection of Mono- and Difunctional Counteranions
Designing Loop and Branch Polymer Topology with Cationic Star Telechelics through Effective Selection of Mono- and Difunctional Counteranions
复制标题
DOI：
10.1021/ma049001s
复制
发表时间：
2004-09
期刊：
影响因子：
5.5
通讯作者：
H. Oike;Akiko Uchibori;Akiko Tsuchitani;Hyunkyu Kim;Y. Tezuka
中科院分区：
文献类型：
--
作者：
H. Oike;Akiko Uchibori;Akiko Tsuchitani;Hyunkyu Kim;Y. Tezuka
采用一种“静电自组装和共价固定”的方法，将线性和三臂星形远螺旋聚合物前驱体携带一羧酸盐和二羧酸盐反阴离子的混合物。研究表明，在适当的稀释下，通过有效区分单羧酸盐和二羧酸盐反阴离子，平衡阳离子和阴离子之间的电荷，可以形成单聚体聚合物。随后，用三臂星形远旋前体携带一对一羧酸盐和二羧酸盐反阴离子，实现了蝌蚪聚合物的选择性合成。此外，通过使用含羟基的单羧酸盐和二羧酸盐反阴离子制备了在精确指定位置具有羟基的功能性蝌蚪聚合物。
An “electrostatic self-assembly and covalent fixation” process has been applied with linear and three-armed star telechelic polymer precursors carrying a mixture of mono- and dicarboxylate counteranions. It has been shown that a unimeric polymer assembly is formed exclusively with the linear polymer precursor under appropriate dilution through the effective discrimination of mono- and dicarboxylate counteranions with balancing the charges between cations and anions. Subsequently, a selective synthesis of tadpole polymers has been achieved with the three-armed star telechelic precursor carrying a pair of a mono- and a dicarboxylate counteranion. Moreover, functional tadpole polymers possessing a hydroxy group at the precisely designated position have been prepared by the use of hydroxy-containing mono- and dicarboxylate counteranions.