交替序列金属有机聚合物的合成与性质研究

Synthesis and properties of alternating metallopolymers

金属有机聚合物结合了高分子的易加工性与金属的功能性,引起了人们的广泛关注.近年来,控制聚合物单体序列也成为高分子化学的研究热点.然而,有关序列可控金属有机聚合物的研究报道还很少.本文以二茂金属(二茂铁和二茂钌)为金属源,合成了二茂金属二烯单体与二茂金属改性的环辛烯单体,通过开环-插入-易位聚合制备了铁钌交替的序列可控金属有机聚合物.利用核磁共振谱、凝胶色谱、紫外光谱、差示扫描量热法、热重分析法、循环伏安法对交替金属聚合物的结构与性质进行了表征.本文为合成交替序列金属有机聚合物提供了新思路.

Metallopolymers, or organometallic polymers, have drawn considerable attention since they possess the combined properties and functions of polymers and metals. In recent years, sequence-controlled/sequence-defined polymers have become the research hotspot in polymer chemistry. However, studies on sequence-controlled metallopolymers remain largely unexplored. In this paper, metallocene-based(ferrocene and ruthenoccene) diacrylates and cyclooctenes are synthesized as monomers to prepare alternating metallopolymers via ring-opening-insertionmetathesis polymerization(ROIMP). The structures and properties of polymers are well-characterized by nuclear magnetic resonance(NMR) spectroscopy, gel permeation chromatography(GPC), ultraviolet-visible(UV-vis)spectroscopy, differential scanning calorimetry(DSC), thermogravimetric analysis(TGA), and cyclic voltammetry(CV). This work provides a new strategy to prepare alternating metallopolymers.