Gradient helical copolymers: synthesis, chiroptical properties, thermotropic liquid crystallinity, and self-assembly in selective organic solvents
文献类型：期刊论文
| 作者 | Chen, Junxian; Li, Bowen; Li, Xiaofu; Zhang, Jie; Wan, Xinhua |
| 刊名 | POLYMER CHEMISTRY
 |
| 出版日期 | 2018-04-21 |
| 卷号 | 9期号:15页码:2002-2010 |
| ISSN号 | 1759-9954 |
| DOI | 10.1039/c8py00237a |
| 英文摘要 | A series of novel gradient copolymers R-(-)-poly(StN-grad-C8) were synthesized through atom transfer radical copolymerization of an achiral styrenic monomer, N,N-dimethyl-4-ethenylbenzamide (M-StN), and a chiral bulky vinylterphenyl monomer, (-)-2,5-bis{4'-[(R)-sec-octyloxycarbonyl]phenyl}styrene (R-(-)-M-C8). The polymerization activities of monomers and the copolymer composition were measured. The results suggested that M-StN (1.59 <= r(StN) <= 2.25) was more active and consumed faster than R-(-)-M-C8 (0.28 <= r(C8) <= 0.44) and composed the main structures of short chain copolymers. However, when the copolymer was extended in size, more and more R-(-)-M-C8 was incorporated. In the resultant gradient copolymers, a sequential appearance of the main chain helicity and thermotropic liquid crystallinity was observed as the polymerization proceeded. When the molar masses were large enough, the copolymers adopted dominant helical conformations with an excess of screw sense and formed stable thermotropic columnar nematic phases. Furthermore, the gradient copolymers exhibited different self-assembly behavior from the block copolymers. The gradient copolymers tended to form larger vesicles, while the block copolymers with similar compositions were more likely to form smaller spherical micelles. This discovery of novel thermotropic liquid crystalline gradient helical copolymers makes it possible to mimic the specific structure of biomacromolecules. |
| 语种 | 英语 |
| WOS记录号 | WOS:000430406700011 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/46093]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhang, Jie; Wan, Xinhua |
| 作者单位 | Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Key Lab Polymer Chem & Phys,Minist Educ, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Junxian,Li, Bowen,Li, Xiaofu,et al. Gradient helical copolymers: synthesis, chiroptical properties, thermotropic liquid crystallinity, and self-assembly in selective organic solvents[J]. POLYMER CHEMISTRY,2018,9(15):2002-2010. |
| APA | Chen, Junxian,Li, Bowen,Li, Xiaofu,Zhang, Jie,&Wan, Xinhua.(2018).Gradient helical copolymers: synthesis, chiroptical properties, thermotropic liquid crystallinity, and self-assembly in selective organic solvents.POLYMER CHEMISTRY,9(15),2002-2010. |
| MLA | Chen, Junxian,et al."Gradient helical copolymers: synthesis, chiroptical properties, thermotropic liquid crystallinity, and self-assembly in selective organic solvents".POLYMER CHEMISTRY 9.15(2018):2002-2010. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。