Segmental dynamics near the chain end of polystyrene in its ultrathin films: A study by single-molecule fluorescence de-focus microscopy
文献类型：期刊论文
| 作者 | Zheng ZhongLi; Li DeSheng; Yang JingFa; Zhao Jiang |
| 刊名 | SCIENCE CHINA-CHEMISTRY
 |
| 出版日期 | 2014-03-01 |
| 卷号 | 57期号:3页码:389-396 |
| 关键词 | Glass Transition Polymer Thin Film Segmental Motion Single Molecule Fluorescence |
| ISSN号 | 1674-7291 |
| DOI | 10.1007/s11426-013-5054-y |
| 英文摘要 | Rotational motion of fluorophores chemically attached to polystyrene chain-ends in ultra-thin films on solid substrates was studied by single-molecule fluorescence de-focus microscopy. The collective feature of the rotational motion was found and evidenced by the sharp change of the population of fluorophores undergoing rotational motion within a very narrow temperature range (named as the changing temperature, T (c)). The T (c) value was found to depend on film thickness and interfacial chemistry and the variation of the T (c) value is also dependent on the molecular weight of the polymer. The results demonstrate that the spatial confinement effect enhances the segmental mobility near the polymer chain-ends while the interfacial attraction restricts the segmental motion inside the thin film. |
| 语种 | 英语 |
| WOS记录号 | WOS:000331980000007 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/52965]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yang JingFa |
| 作者单位 | Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng ZhongLi,Li DeSheng,Yang JingFa,et al. Segmental dynamics near the chain end of polystyrene in its ultrathin films: A study by single-molecule fluorescence de-focus microscopy[J]. SCIENCE CHINA-CHEMISTRY,2014,57(3):389-396. |
| APA | Zheng ZhongLi,Li DeSheng,Yang JingFa,&Zhao Jiang.(2014).Segmental dynamics near the chain end of polystyrene in its ultrathin films: A study by single-molecule fluorescence de-focus microscopy.SCIENCE CHINA-CHEMISTRY,57(3),389-396. |
| MLA | Zheng ZhongLi,et al."Segmental dynamics near the chain end of polystyrene in its ultrathin films: A study by single-molecule fluorescence de-focus microscopy".SCIENCE CHINA-CHEMISTRY 57.3(2014):389-396. |
入库方式： OAI收割
来源：化学研究所
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