Interfacial diffusion of a single cyclic polymer chain
文献类型：期刊论文
| 作者 | Ye, Shaoyong1,2; Tang, Qingquan1,2; Yang, Jingfa1,2; Zhang, Ke1,2; Zhao, Jiang1,2 |
| 刊名 | SOFT MATTER
 |
| 出版日期 | 2016 |
| 卷号 | 12期号:47页码:9520-9526 |
| 英文摘要 | Lateral diffusion of cyclic polystyrene at the interface between fused silica and dichloromethane is investigated at the single-molecular level. Narrowly distributed cyclic polystyrene (c-PS) of high purity with molecular weights spanning nearly an order of magnitude is prepared via atom transfer radical polymerization (ATRP) and Cu-catalyzed azide/alkyne cycloaddition (CuAAC) click reaction. The diffusion coefficients (D) of c-PS and its linear analogue (l-PS) on the surface are measured by fluorescence correlation spectroscopy (FCS). The diffusion coefficient of c-PS is discovered to have an inverse dependence on molecular weight, D similar to M-1, in contrast to the case of linear polystyrene, which reproduces a stronger molecular weight dependence, D similar to M-3/2. The slower interfacial motion of cyclic chains is attributed to their stronger binding to the surface and more importantly, the unique surface diffusion mechanism due to the absence of free chain ends. |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/38066]  |
| 专题 | 化学研究所_高分子物理与化学实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ye, Shaoyong,Tang, Qingquan,Yang, Jingfa,et al. Interfacial diffusion of a single cyclic polymer chain[J]. SOFT MATTER,2016,12(47):9520-9526. |
| APA | Ye, Shaoyong,Tang, Qingquan,Yang, Jingfa,Zhang, Ke,&Zhao, Jiang.(2016).Interfacial diffusion of a single cyclic polymer chain.SOFT MATTER,12(47),9520-9526. |
| MLA | Ye, Shaoyong,et al."Interfacial diffusion of a single cyclic polymer chain".SOFT MATTER 12.47(2016):9520-9526. |
入库方式： OAI收割
来源：化学研究所
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