Modular Monomers with Tunable Solubility: Synthesis of Highly Incompatible Block Copolymer Nano-Objects via RAFT Aqueous Dispersion Polymerization
Modular Monomers with Tunable Solubility: Synthesis of Highly Incompatible Block Copolymer Nano-Objects via RAFT Aqueous Dispersion Polymerization
复制标题
溶解度可调的模块化单体：通过 RAFT 水分散聚合合成高度不相容的嵌段共聚物纳米物体
DOI：
10.1021/acsmacrolett.7b00056
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发表时间：
2017
影响因子：
5.8
通讯作者：
An Zesheng
中科院分区：
文献类型：
--
作者：
Zhang Baohua;Lv Xiaoqing;An Zesheng
利用由中性稳定剂嵌段和嵌段核形成嵌段组成的嵌段共聚物的高度不相容性来驱动聚合诱导自组装（比萨）期间的相分离。开发了一种系统地调节离子单体/聚合物的溶解度的模块化方法，以有效地识别适合于水分散聚合的单体。中性嵌段共聚物的强相分离能力有利于在相对宽的组成范围内甚至在非常低的固体含量下形成蠕虫。这些发现表明，在研究比萨中的形态转变时，稳定块和成核块之间的不相容程度应被视为关键参数之一。
The high incompatibility of block copolymers consisting of a neutral stabilizer block and a polyelectrolyte core-forming block is exploited to drive phase segregation during polymerization-induced self-assembly (PISA). A modular approach to systematically tune the solubility of ionic monomers/polymers is developed to efficiently identify monomers suitable for aqueous dispersion polymerizations. The strong phase segregation ability of the neutral-polyelectrolyte block copolymers favors the formation of worms over a relatively broad composition range and even at very low solids. These findings suggest that the degree of incompatibility between the stabilizer block and the core-forming block should be considered as one of the key parameters when studying morphological transitions in PISA.