A photo-thermal dual-regulated latent monomer strategy for sequence control of polymers

被引：6

作者：

Zhang, Liuqiao ^{[1
]}

Song, Yuyang ^{[1
]}

Cao, Yuhang ^{[1
]}

Wang, Zhen ^{[1
]}

Huang, Zhihao ^{[1
]}

Xuan, Sunting ^{[1
]}

Zhang, Zhengbiao ^{[1
,2
]}

机构：

[1] Soochow Univ, State & Local Joint Engn Lab Novel Funct Polymer, Jiangsu Key Lab Adv Funct Polymer Design & Applic, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China

[2] Soochow Univ, State Key Lab Radiat Med & Protect, Suzhou 215123, Peoples R China

来源：

POLYMER CHEMISTRY | 2021年 / 12卷 / 35期

基金：

中国国家自然科学基金;

关键词：

ITERATIVE EXPONENTIAL-GROWTH; RADICAL POLYMERIZATION; TRIBLOCK COPOLYMERS; PHENYL MALEIMIDE; ETHYL; METHACRYLATE; TRANSITION;

D O I：

10.1039/d1py00961c

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Sequence-control, widely found in biopolymers (e.g., DNA), remains a significant challenge in polymer synthesis. Here, the concept of the photo-thermal dual-regulated release of the methyl maleimide (MMI) monomer in RAFT copolymerizations is presented, aiming to enrich the current methodologies of polymer sequence control. Photo-sensitive dithienylfuran-protected methyl maleimide (DTFMMI) was used as a latent monomer in which the dithienyl groups were in the "ring-closed" form under ultraviolet irradiation. This rigid structure significantly reduced its activity towards the retro Diels-Alder (rDA) reaction and the monomer remained dormant at a high temperature. However, the dithienyl group transformed to its "ring-open" analogue with the irradiation of visible light and triggered the rDA reaction of DTFMMI, allowing the release of active MMI and its gradual incorporation into the growing polymer chains. As a result, the structural isomerization of DTFMMI and the onset release of MMI could be well controlled by light and temperature, collectively, to regulate the polymer sequence in a more facile and non-invasive way. This proof-of-concept study sheds light on the development of synthetic methods for the construction of more advanced sequence-controlled polymers.

引用

页码：4996 / 5002

页数：7