Synthesis and characterization of optically active helical polymers based on 2,5-di(4 '-formylphenyl) styrene
文献类型：期刊论文
| 作者 | Zhu Zhiguo; Zhi Junge; Liu Anhua; Cui Jiaxi; Wan Xinhua; Chen Xiaofang; Zhou Qifeng |
| 刊名 | ACTA POLYMERICA SINICA
 |
| 出版日期 | 2007-09-01 |
| 期号 | 9页码:875-883 |
| 关键词 | Schiff Base Chiral Vinyl Monomer P-terphenyl Group Free Radical Polymerization Optically Active Polymer Helical Conformation |
| ISSN号 | 1000-3304 |
| 英文摘要 | 2, 5-.Di (4r-formylphenyl) styrene was synthesized via Suzuki cross-coupling reaction of 2, 5-dibromostyrene and p-formylphenylboronic acid. In the presence of catalytic amount of glacial acetic acid,a pair of chiral nonracemic vinyl monomers,(+)-2,5-di {4'-[(N-(S)-alpha-methylbenzylimine)methylene]phenyl]} styrene (M 1)and(-)-2,5-di {4'-[(N-(R)-alpha-methylbenzylimine)methylene]phenyl}styrene (M 2),was synthesized through the condensation reaction between 2, 5-di (4'-formylphenyl) styrene and optically pure a-methylbenzylamine. Optically active polymers were prepared via free radical polymerization of M 1 and M 2 initiated by AIBN or BPO depending on polymerization temperature. The results from specific optical rotation, UV-Vis absorption spectra and circular dichroism spectra indicated that the polymer obtained might adopt a helical conformation with a predominance of one helical screw sense. The polymerization condition had pronounced effects on the chiroptical properties of the polymers. Polymer with larger helical chirality was obtained when the polymerization was carried out in more polar aromatic media at higher temperature. Due to the steric hindrance of the bulky p -terphenyl groups, the main chain helical chirality formed during polymerization was thermally stable and displayed memory effect. |
| 语种 | 英语 |
| WOS记录号 | WOS:000249791800016 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/62213]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhu Zhiguo |
| 作者单位 | Peking Univ, Beijing Natl Lab Mol Sci, Key Lab Polymer Chem & Phys, Minist Educ,Coll Chem & Mol Engn, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu Zhiguo,Zhi Junge,Liu Anhua,et al. Synthesis and characterization of optically active helical polymers based on 2,5-di(4 '-formylphenyl) styrene[J]. ACTA POLYMERICA SINICA,2007(9):875-883. |
| APA | Zhu Zhiguo.,Zhi Junge.,Liu Anhua.,Cui Jiaxi.,Wan Xinhua.,...&Zhou Qifeng.(2007).Synthesis and characterization of optically active helical polymers based on 2,5-di(4 '-formylphenyl) styrene.ACTA POLYMERICA SINICA(9),875-883. |
| MLA | Zhu Zhiguo,et al."Synthesis and characterization of optically active helical polymers based on 2,5-di(4 '-formylphenyl) styrene".ACTA POLYMERICA SINICA .9(2007):875-883. |
入库方式： OAI收割
来源：化学研究所
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