大连理工大学主页平台管理系统蹇锡高 Donor-acceptor copolymers containing phthalazinone-thiophene structure synthesized by low-cost copper-catalyzed Ullmann polymerization 中文主页

论文成果

Donor-acceptor copolymers containing phthalazinone-thiophene structure synthesized by low-cost copper-catalyzed Ullmann polymerization: 点击次数：; 发布时间： 2019-03-09; 发布时间：2019-03-09; 论文类型：期刊论文; 发表时间：2016-01-01; 发表刊物：RSC ADVANCES; 收录刊物：EI、SCIE; 卷号：6; 期号：8; 页面范围：6772-6781; ISSN号：2046-2069; 摘要：Herein, we present low-cost copper-catalyzed Ullmann polycondensation of phthalazinone based monomers containing both OH and NH groups, which provides access to polyarylethers and conjugated polymers. The synthesis of the polymers was accomplished by a combination of low activity thiophene and carbazole monomers. In particular, it was shown that a stronger base (Cs2CO3 > K2CO3) can efficiently polymerize the low activity thiophene monomer with the phthalazinone based monomer, to obtain high number-average molecular weight, up to 17.9 kDa (PDI = 2.43). Moreover, in this study, the result of reaction process monitoring revealed that the Ullmann polymerization was in favour of the radical mechanism. The reaction activity of di-halogenated monomers was found to be a crucial factor for achieving a high molecular weight polymer. Thus, the number-average molecular weight of donor-acceptor copolymers containing the phthalazinone-thiophene structure ranged from 2.2 to 9.6 kDa. The new copolymer structures were confirmed by H-1-NMR, FT-IR and GPC. Their thermal, optical, electrochemical and X-ray diffraction (XRD) properties, and density functional theory (DFT) calculations, were investigated in detail. The results show that the thiophene unit is beneficial to the pi-pi interaction between the polymer chains, compared to carbazole and phthalazinone units.

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蹇锡高

同专业博导同专业硕导个人学术主页

教授博士生导师硕士生导师

性别：男

毕业院校：大连工学院

学位：硕士

所在单位：化工学院

学科：高分子材料. 高分子化学与物理. 膜科学与技术

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