文章信息/Info

Title:

One-Step Synthesis of Hybrid Block Copolymers through Metal-Free Catalysis

文章編號:

1674-3962(2023)06-0441-15

作者:

何冠辰1;  高生輝2;  李恒1; 3;  趙俊鵬1

1. 華南理工大學材料科學與工程學院, 廣東 廣州 510640 2. 陜西榆能集團能源化工研究院有限公司, 陜西 榆林 719000 3. 湘潭大學化學學院, 湖南 湘潭 411105

Author(s):

HE Guanchen1;  GAO Shenghui2;  LI Heng1; 3;  ZHAO Junpeng1

1. Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China 2. Shaanxi Yuneng Group Energy and Chemical Industry Research Institute Co. , Ltd. , Yulin 719000, China 3. College of Chemistry, Xiangtan University, Xiangtan 411105, China

關鍵詞:

無金屬催化聚合;  共聚反應;  開環聚合;  嵌段共聚物;  活性/ 可控聚合

Keywords:

Key words: metal-free polymerization;  copolymerization; ring-opening polymerization;  block copolymer;  living/controlled polymerization

分類號:

TQ316. 3

DOI:

10.7502/j.issn.1674-3962.202209047

文獻標志碼:

A

摘要:

雜化嵌段共聚物由兩種及以上化學結構和理化性質迥異的高分子鏈段構成, 往往具有顯著的自組裝和微觀相分離等性能, 獲得了廣泛的研究與應用。從異源單體(即具有不同聚合基團的單體)混合物出發, 通過一步操作使之發生序列選擇性的連續或同步聚合反應, 是合成雜化嵌段共聚物的理想方法。然而, 該方法長期以來面臨著異源單體聚合反應難相容、苛刻的嵌段共聚動力學難滿足等挑戰。近年來,有機/ 無金屬催化聚合發展迅猛, 為實現異源單體的序列選擇性共聚和雜化嵌段共聚物的“一步法”可控合成提供了一系列行之有效的新思路和新手段。綜述了相關研究進展, 主要包括雜環與雜環單體、雜環與乙烯基單體的一步嵌段共聚, 并對關鍵反應機理進行簡要介紹。

Abstract:

Hybrid block copolymers, consisting of two or more polymeric segments with significantly different chemical structures and physicochemical properties, are readily prone to self-assembly and microphase separation and thus highly attractive for fundamental studies and materials applications. One-step sequence-selective block copolymerization of mixed heterogeneous monomers ( with different polymerizing groups) is the ideal method for synthesizing hybrid block copolymers. However, great challenges have long been associated with this method for the incompatibility of mechanistically distinct polymerizations and the highly stringent kinetic requirements. The recent surge of organocatalytic/metal-free polymerization has heavily spurred the advancement of this area with a series of novel and effective monomer/catalyst designing strategies. The progress is reviewed for the combinations of heterocyclic monomers and heterocyclic/vinyl monomers, with the key mechanistic aspects briefly elucidated.