Helical conformation of the copolymers of l-proline derivatives based propargylether and chiral n-propargylamide
文献类型：期刊论文
| 作者 | Dai, Jian; Ha, Chengyong; Chang, Dongliang; Shen, Minmin |
| 刊名 | Polymer
 |
| 出版日期 | 2007-09-10 |
| 卷号 | 48期号:19页码:5696-5701 |
| 关键词 | Propargylether Copolymerization Helical conformation |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2007.07.002 |
| 通讯作者 | Ha, chengyong(cyha@gic.ac.cn) |
| 英文摘要 | The novel acetylene monomers, l-proline derivatives based propargylethers pr (pa, pc, and pl) were synthesized by alkylation of bochydroxyproline with propargyl bromide and acylation of achiral amine. the homopolymers of the novel acetylene monomer exist in no regulated higher order structure in solvents because of the lack of hydrogen bond and the unique ring structure in the pendant. consequently, the copolymerization of l-proline-derived chiral propargylether pr with the l-alanine-derived n-propargylamide (la) was formed and the chiroptical properties of the formed copolymers were examined. we conclude that (1) n-h of the amide group at 2-position in proline play an important role in the formation of helical conformation of poly(la(88)-co-pr12); (2) improving the amount of pc of poly(la-co-pc) changes the conformation of the copolymer in chcl3 and perturbs the leadership of la; (3) the conformation of poly(la(75)-co-pc25) remarkably changes with changing temperature and pc obtains the leadership in the competition on the conformation of poly (la(75)-co-pc25) in chcl3 with the improvement of temperature. (c) 2007 published by elsevier ltd. |
| WOS关键词 | POLYACETYLENES ; ACETYLENES ; RHODIUM(I) ; POLYMERS |
| WOS研究方向 | Polymer Science |
| WOS类目 | Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000250161000029 |
| 出版者 | ELSEVIER SCI LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2381185 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Ha, Chengyong |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Chem, Lab Cellulose & Lignocellulos, Guangzhou 510650, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dai, Jian,Ha, Chengyong,Chang, Dongliang,et al. Helical conformation of the copolymers of l-proline derivatives based propargylether and chiral n-propargylamide[J]. Polymer,2007,48(19):5696-5701. |
| APA | Dai, Jian,Ha, Chengyong,Chang, Dongliang,&Shen, Minmin.(2007).Helical conformation of the copolymers of l-proline derivatives based propargylether and chiral n-propargylamide.Polymer,48(19),5696-5701. |
| MLA | Dai, Jian,et al."Helical conformation of the copolymers of l-proline derivatives based propargylether and chiral n-propargylamide".Polymer 48.19(2007):5696-5701. |
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来源：中国科学院大学
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