Iodine-mediated photo-controlled atom transfer radical polymerization (photo-ATRP) and block polymerization combined with ring-opening polymerization (ROP) via a superbase

被引：19

作者：

Li, Mengmeng ^{[1
]}

Wang, Sixuan ^{[1
]}

Li, Feifei ^{[1
]}

Zhou, Lin ^{[1
]}

Lei, Lin ^{[1
]}

机构：

[1] Northwest Univ, Key Lab Synthet & Nat Funct Mol Chem, Minist Educ, Coll Chem & Mat Sci, Xian 710127, Peoples R China

来源：

POLYMER CHEMISTRY | 2020年 / 11卷 / 41期

基金：

中国国家自然科学基金;

关键词：

ONE-POT SYNTHESIS; EPSILON-CAPROLACTONE; ALKYL BROMIDES; PET-RAFT; COPOLYMERIZATION; CATALYST; TRANSFORMATION; BUTYROLACTONE; INITIATORS; POLYMERS;

D O I：

10.1039/d0py01031f

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Most organocatalysts for photo-controlled atom transfer radical polymerization (photo-ATRP) are metal complexes or synthetically elaborate organic dyes, which are toxic and expensive. Herein, we present a combination of 1,1,3,3-tetramethylguanidine (TMG) and sodium iodide (NaI) under white LED irradiation that could catalyze iodine-mediated photo-ATRP. Using a dual initiator and combining with ring-opening polymerization (ROP), well-defined poly(methacrylate)-b-polyester diblock copolymers can be successfully prepared in "one-pot" using a TMG/NaI photoredox catalytic system. Moreover, several superbases such as 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD), 1,8-diazabicyclo [5.4.0]-undec-7-ene (DBU) and a phosphazene superbase (t-Bu-P-4) could also be employed with NaI to serve as photoredox catalysts for this polymerization system and block copolymers could be synthesized in "one-pot".

引用

页码：6591 / 6598

页数：8

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