Chain helicity of a poly(phenylacetylene) with chiral centers between backbone and mesogenic groups on side chains
文献类型：期刊论文
| 作者 | Liu, Jia-Hao1,2; Yan, Jing-Jing1,2; Chen, Er-Qiang1,2; Lam, Jacky W. Y.3; Dong, Yu-Ping4; Liang, De-Hai1,2; Tang, Ben Zhong3 |
| 刊名 | POLYMER
 |
| 出版日期 | 2008-07-28 |
| 卷号 | 49期号:16页码:3366-3370 |
| 关键词 | Chiral Poly(Phenylacetylene) Chain Helicity Exciton Coupling |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2008.06.007 |
| 英文摘要 | An optically active poly(phenylacetylene), poly{2-(R)-methyl-2-[4'-(tetradecyloxy)biphenyl-4-yloxy]-propyl 4-ethynylbenzoate} (P1) is synthesized in a high yield with a high molecular weight (1.3 x 10(6) g/mol) by [Rh(nbd)Cl](2) catalyst. The chemical structure of the polymer is characterized by IR and NMR spectroscopies with satisfactory analysis data. The polymer is soluble in many common organic solvents. It shows circular dichroism (CD) band in the absorption region of the polyacetylene backbone, indicating that P1 is chiroptical owing to the formation of helical conformation with an excess screw sense. Combining the results of CD and light scattering experiments, we find that addition of poor solvent can induce the neighboring helical segments within a single polymer strand to become closer, resulting in exciton coupling prior to polymer precipitation. The exciton coupling can be kept in the solid state after solvent evaporation. (c) 2008 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000258437100003 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/64673]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Chen, Er-Qiang |
| 作者单位 | 1.Peking Univ, Beijing Natl Lab Mol Sci, Dept Polymer Sci & Engn, Coll Chem & Mol Engn, Beijing 100871, Peoples R China 2.Peking Univ, Key Lab Polymer Chem & Phys, Minist Educ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China 3.Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China 4.Beijing Inst Technol, Coll Mat Sci & Engn, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jia-Hao,Yan, Jing-Jing,Chen, Er-Qiang,et al. Chain helicity of a poly(phenylacetylene) with chiral centers between backbone and mesogenic groups on side chains[J]. POLYMER,2008,49(16):3366-3370. |
| APA | Liu, Jia-Hao.,Yan, Jing-Jing.,Chen, Er-Qiang.,Lam, Jacky W. Y..,Dong, Yu-Ping.,...&Tang, Ben Zhong.(2008).Chain helicity of a poly(phenylacetylene) with chiral centers between backbone and mesogenic groups on side chains.POLYMER,49(16),3366-3370. |
| MLA | Liu, Jia-Hao,et al."Chain helicity of a poly(phenylacetylene) with chiral centers between backbone and mesogenic groups on side chains".POLYMER 49.16(2008):3366-3370. |
入库方式： OAI收割
来源：化学研究所
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