Controlled Synthesis of Poly(vinyl ether)-Grafted Poly(phenylacetylene)s by a Combination of Living Coordination Polymerization and Living Cationic Polymerization

Controlled Synthesis of Poly(vinyl ether)-Grafted Poly(phenylacetylene)s by a Combination of Living Coordination Polymerization and Living Cationic Polymerization
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活性配位聚合与活性阳离子聚合相结合控制合成聚乙烯基醚接枝聚苯乙炔

DOI:
10.1021/acsomega.9b04056
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发表时间:
2020
期刊:
影响因子:
4.1
通讯作者:
Minoda Masahiko
Minoda Masahiko
中科院分区:
化学3区
文献类型:
--
作者:
Motoyanagi Jin;Kawamura Shinya;Minoda Masahiko

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我们新设计了一种官能化单体(PhAVE-AcOH)含有苯乙炔(PhA)基团和1-(乙酰氧基)乙氧基,后者预计将作为一个引发剂部分结合刘易斯酸为基础的活化剂在活性阳离子聚合条件下。采用Rh配合物介导的活性配位聚合法合成了一种窄分子量分布(Mw/Mn= 1.02)的多功能引发剂聚(PhAVE-AcOH)。然后,以聚(PhAVE-AcOH)的1-(乙酰氧基)乙氧基侧链为引发剂,进行异丁基乙烯基醚(IBVE)的活性阳离子接枝聚合,得到主链和侧链均具有良好结构控制(Mw/Mn= 1.05-1.10)的聚IBVE接枝聚PhA(polyPhA-g-polyIBVE)。我们发现,紫外-可见吸收光谱的polyPhA-g-polyIBVE逐渐红移与接枝链的分子量的增加。
We newly designed a functionalized monomer (PhAVE-AcOH) containing a phenylacetylene (PhA) group and a 1-(acetoxy)ethoxy group, the latter of which is expected to act as an initiator moiety in combination with Lewis acid-based activators under living cationic polymerization conditions. A polyPhA-based multifunctional initiator poly(PhAVE-AcOH) with a narrow molecular weight distribution (Mw/Mn= 1.02) was synthesized by Rh complex-mediated living coordination polymerization of PhAVE-AcOH. Then, living cationic graft polymerization of isobutyl vinyl ether (IBVE) was performed employing the pendant 1-(acetoxy) ethoxy initiating moiety of poly(PhAVE-AcOH) to form polyIBVE-grafted polyPhA(polyPhA-g-polyIBVE), where both the main chain and side chains possessed well-controlled structures (Mw/Mn= 1.05–1.10). We found that UV–vis absorption spectra of polyPhA-g-polyIBVE were progressively redshifted with increasing molecular weights of the graft chain.
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影响因子: 5.5
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