期刊
ACS MACRO LETTERS
卷 11, 期 12, 页码 1331-1335出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsmacrolett.2c00594
关键词
-
资金
- Japan Society for the Promotion of Science (JSPS) KAKENHI [21H05027]
- JST SPRING [JPMJSP2110]
In this study, structurally controlled high-molecular-weight (HMW) PSts and block copolymers were successfully synthesized using emulsion organotellurium-mediated radical polymerization (TERP). The method demonstrated high monomer conversion, high end-group fidelity, and rapid monomer diffusion, providing a valuable route for fabricating polymer materials based on HMW PSts.
Structurally controlled high-molecular-weight (HMW) poly-styrenes (PSts) and block copolymers consisting of HMW PSt segments were successfully synthesized by emulsion organotellurium-mediated radical polymerization (TERP). The hydrophilicity of the organotellurium group of TERP chain transfer agents (CTAs) was important for success, and CTAs 1b and 1c with di-and tetraethylene glycol units were suitable. By using 1b and 1c and using hexadecyltrimethylammonium bromide (CTAB) as the surfactant, PSts with MWs over 1 million and with low dispersity (D < 1.6) were synthesized with >96% monomer conversion. Because of the high monomer conversion, high end-group fidelity, and rapid monomer diffusion to polymer particles, HMW block copolymers with low dispersity were successfully synthesized by adding a second monomer after converting the first monomer without isolating the macroinitiators. Despite recent developments in reversible-deactivation radical polymerization (RDRP), the synthesis of HMW polymers, particularly PSts and block copolymers, has been a formidable challenge. This method provides a valuable route for fabricating polymer materials based on HMW PSts.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据