A dual-initiating organic frustrated Lewis pair catalyst for living polymerizations of (bio)acrylates to facilitate the synthesis of metal-free multiblock copolymers

IF 4.1 2区化学 Q2 POLYMER SCIENCE

Polymer Chemistry Pub Date : 2024-12-17 DOI:10.1039/d4py01067a

Zhen-Hua Zhang, Yuyang Chen, Yuesheng Li, Hong Miao

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引用次数: 0

Abstract

The development of powerful catalysis or methodologies for the synthesis of fundamentally and technologically important multiblock copolymers is a perpetual task. Dual-initiating Lewis pair (LP) catalysts for living/controlled polymerizations of methyacrylates have demonstrated to be an effective approach to all-acrylic multiblock copolymers. However, the utilization of metal-based Lewis acids (LAs) and complicated Lewis bases (LBs) that typically require laborious syntheses are essential. This contribution reports the first organic dual-initiating Frustrated Lewis pair (FLP) catalysts consisting of tris(2,4-difluorophenyl)borane [B(2,4-F2C6H3)3] LA and commercially available 1,2-bis[(di-tert-butylphosphino)methyl]benzene (DPtBu2) LB, which can mediate efficient and living polymerizations of various (bio)acrylates. Accordingly, all-acrylic multiblock copolymers (up to hepta blocks) with well-defined structures can be readily prepared via sequential monomer addition, thus successfully establishing DPtBu2/B(2,4-F2C6H3)3 FLP as a green/sustainable and user-friendly polymerization catalysis for convenient synthesis of metal-free all-acrylic multiblock copolymers.

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用于（生物）丙烯酸酯活聚合的双引发有机沮灭路易斯对催化剂，促进无金属多嵌段共聚物的合成

为合成具有重要基础和技术意义的多嵌段共聚物而开发功能强大的催化剂或方法是一项长期任务。用于甲基丙烯酸酯活/可控聚合反应的双引发路易斯对（LP）催化剂已被证明是一种有效的全丙烯酸多嵌段共聚物方法。然而，利用金属基路易斯酸（LAs）和复杂的路易斯碱（LBs）通常需要费力的合成。本文报告了由三(2,4-二氟苯基)硼烷[B(2,4-F2C6H3)3] LA 和市售的 1,2-双[(二叔丁基膦)甲基]苯 (DPtBu2) LB 组成的首个有机双引发受挫路易斯对 (FLP) 催化剂，它可以介导各种（生物）丙烯酸酯的高效活聚合反应。因此，通过顺序添加单体，可以轻松制备出具有明确结构的全丙烯酸多嵌段共聚物（最多可达七嵌段），从而成功地将 DPtBu2/B(2,4-F2C6H3)3 FLP 确立为一种绿色/可持续和用户友好型聚合催化剂，用于方便地合成不含金属的全丙烯酸多嵌段共聚物。

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来源期刊

Polymer Chemistry POLYMER SCIENCE-

CiteScore

8.60

自引率

8.70%

发文量

535

审稿时长

1.7 months

期刊介绍： Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.