Diffusion behavior of polyelectrolytes in dilute solution: coupling effects of hydrodynamic and Coulomb interactions
文献类型：期刊论文
| 作者 | Liu LiJun; Chen JiZhong; Chen WenDuo; Li LiangYi; An LiJia |
| 刊名 | SCIENCE CHINA-CHEMISTRY
 |
| 出版日期 | 2014-07-01 |
| 卷号 | 57期号:7页码:1048-1052 |
| 关键词 | Polyelectrolytes Diffusion Coefficient Hydrodynamic Interactions Coulomb Interactions Bjerrum Length |
| ISSN号 | 1674-7291 |
| DOI | 10.1007/s11426-014-5125-8 |
| 英文摘要 | The diffusion behavior of polyelectrolytes in dilute salt-free solution is studied through a hybrid mesoscale simulation technique that combines the molecular dynamics method and the multiparticle collision dynamics approach. To elucidate the effects of hydrodynamic interactions (HI), we compare results for hydrodynamic and random solvents. When HI are taken into account, we find that the chain diffusivity decreases initially and then increases gradually with the increasing strength of the Coulomb interaction. By contrast, when HI are switched off, the electrostatic-dependent diffusivity shows three distinct regions, and a plateau of approximately constant diffusivity manifests between two decreasing regions. The findings reveal that the dynamics of polyelectrolytes in dilute solution depend on the coupling effects of hydrodynamic and Coulomb interactions, and that these dynamics can be understood by considering the conformational changes of chains, the counterion condensation, and the dynamics of counterions. |
| 语种 | 英语 |
| WOS记录号 | WOS:000338450800018 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/52551]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Chen JiZhong |
| 作者单位 | Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu LiJun,Chen JiZhong,Chen WenDuo,et al. Diffusion behavior of polyelectrolytes in dilute solution: coupling effects of hydrodynamic and Coulomb interactions[J]. SCIENCE CHINA-CHEMISTRY,2014,57(7):1048-1052. |
| APA | Liu LiJun,Chen JiZhong,Chen WenDuo,Li LiangYi,&An LiJia.(2014).Diffusion behavior of polyelectrolytes in dilute solution: coupling effects of hydrodynamic and Coulomb interactions.SCIENCE CHINA-CHEMISTRY,57(7),1048-1052. |
| MLA | Liu LiJun,et al."Diffusion behavior of polyelectrolytes in dilute solution: coupling effects of hydrodynamic and Coulomb interactions".SCIENCE CHINA-CHEMISTRY 57.7(2014):1048-1052. |
入库方式： OAI收割
来源：化学研究所
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