A one-pot approach towards polycarbonate-b-polyester block copolymers via chemoselective polymerization catalyzed by a one-component phosphonium borane Lewis pair

被引:4
|
作者
Li, Yutao [1 ]
Kou, Xinhui [2 ]
Wang, Xiaowu [3 ]
Xia, Lin [1 ]
Li, Zhibo [1 ,3 ]
机构
[1] Qingdao Univ Sci & Technol, Coll Polymer Sci & Engn, 53 Zhengzhou Rd, Qingdao 266042, Peoples R China
[2] Qingdao Univ Sci & Technol, Anal & Testing Ctr, 53 Zhengzhou Rd, Qingdao 266042, Peoples R China
[3] Qingdao Univ Sci & Technol, Coll Chem Engn, 53 Zhengzhou Rd, Qingdao 266042, Peoples R China
基金
中国国家自然科学基金; 国家重点研发计划;
关键词
ABA BLOCK; ONE-STEP; EPOXIDES; ANHYDRIDE; MIXTURES; LACTIDE; ROUTE; CO2;
D O I
10.1039/d4py00329b
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Chemoselective polymerization from mixtures of monomers to control the polymer sequence is a challenging task. In this contribution, we describe a unique chemoselective polymerization affording predictable (co)polymer compositions from a mixture of monomers. The use of a one-component phosphonium borane Lewis pair and a mixture of l-lactide (l-LA), cyclohexene oxide (CHO) and CO2 enables the selective synthesis of either a polyester, polycarbonate or poly(carbonate-b-ester). The selectivity depends on the nature of the borane-oxygen functionality at the growing polymer chain end, and can be controlled by the addition of CO2 as an exogeneous switch reagent.
引用
收藏
页码:2476 / 2481
页数:6
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