全氟烷基乙烯和乙烯基酯/酰胺的光驱动有机催化受控自由基共聚物

IF 5.1 Q1 POLYMER SCIENCE

ACS Macro Letters Pub Date : 2024-11-15 DOI:10.1021/acsmacrolett.4c00737

Qianhao Ye, Kaixuan Chen, Chengda Zhou, Mengli Xu, Mao Chen

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引用次数: 0

摘要

结构明确的含氟聚合物在广泛的高科技应用领域具有巨大潜力。然而，利用容易获得的单体可控合成含氟聚合物仍然十分困难。在这项工作中，我们报告了在光照射下（全氟烷基）乙烯（PFAEs）和非共轭乙烯基单体（UCMs）的有机催化受控自由基共聚的发展情况，从而实现了在无金属条件下按需获得侧链含氟聚合物。这种方法可生产出多种聚合物，它们以不同的氟烷基和酯/酰胺作为悬垂基团，摩尔质量可调，分散度低（约 Đ = 1.1-1.3），PFAE 和 UCM 单元的比例可调。所获得的含氟聚合物具有良好的链端保真度和活性，可以通过链延伸聚合来制备成分复杂的嵌段共聚物。此外，PFAE 共聚物还具有出色的透光性和低折射率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Light-Driven Organocatalyzed Controlled Radical Copolymerization of (Perfluoroalkyl)ethylenes and Vinyl Esters/Amides

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Light-Driven Organocatalyzed Controlled Radical Copolymerization of (Perfluoroalkyl)ethylenes and Vinyl Esters/Amides

Fluoropolymers of well-defined structures exhibit significant potential in a broad range of high-tech applications. However, the controlled synthesis of fluoropolymers from easily available monomers remains difficult. In this work, we report the development of an organocatalyzed controlled radical copolymerization of (perfluoroalkyl)ethylenes (PFAEs) and unconjugated vinyl monomers (UCMs) under light irradiation, which has enabled on-demand access toward side-chain fluorinated polymers under metal-free conditions. This method furnishes a large variety of polymers with diverse fluoroalkyl and ester/amide as pendent groups, tunable molar masses, and low dispersities (ca. Đ = 1.1–1.3), and adjustable fractions of PFAE and UCM units. Obtained fluoropolymers exhibit good chain-end fidelity and activity, allowing chain-extension polymerizations to prepare block copolymers of complicated compositions. Furthermore, the PFAE copolymers exhibit outstanding light transmission and low refractive index.

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来源期刊

ACS Macro Letters 化学-

CiteScore

10.40

自引率

3.40%

发文量

209

审稿时长

1 months

期刊介绍： ACS Macro Letters publishes research in all areas of contemporary soft matter science in which macromolecules play a key role, including nanotechnology, self-assembly, supramolecular chemistry, biomaterials, energy generation and storage, and renewable/sustainable materials. Submissions to ACS Macro Letters should justify clearly the rapid disclosure of the key elements of the study. The scope of the journal includes high-impact research of broad interest in all areas of polymer science and engineering, including cross-disciplinary research that interfaces with polymer science. With the launch of ACS Macro Letters, all Communications that were formerly published in Macromolecules and Biomacromolecules will be published as Letters in ACS Macro Letters.