Detection of Site-dependent Segmental Mobility of Polymer by Fluorescent Defocused Imaging

	Detection of Site-dependent Segmental Mobility of Polymer by Fluorescent Defocused Imaging
	Li, De-sheng 1,2; Yang, Jing-fa 1,2; Zhao, Jiang 1,2
刊名	CHINESE JOURNAL OF POLYMER SCIENCE
	2017-12-01
卷号	35 期号:12 页码:1488-1496
关键词	Glass Transition Segmental Mobility Chain End Effect Fluorescent Defocused Imaging
英文摘要	Polymer chain ends play an important role in the glassy dynamics of polymeric materials. In this study, a combination of single molecule defocus fluorescence microscopy and well-controlled atom transfer radical polymerization was used to investigate site-dependent segmental mobility of poly(n-butyl methacrylate). As the temperature increased, the rotation of fluorophores, which were selectively labelled in chain end and chain middle, was gradually activated. The power spectra of rotation trajectories, the distribution of angular displacement as well as the population of rotating fluorophores demonstrated that the local dynamics was more activated at the chain ends than the middles, showing the unique contribution of the chain end to the dynamics of the system.
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/39178]
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	Li, De-sheng,Yang, Jing-fa,Zhao, Jiang. Detection of Site-dependent Segmental Mobility of Polymer by Fluorescent Defocused Imaging[J]. CHINESE JOURNAL OF POLYMER SCIENCE,2017,35(12):1488-1496.
APA	Li, De-sheng,Yang, Jing-fa,&Zhao, Jiang.(2017).Detection of Site-dependent Segmental Mobility of Polymer by Fluorescent Defocused Imaging.CHINESE JOURNAL OF POLYMER SCIENCE,35(12),1488-1496.
MLA	Li, De-sheng,et al."Detection of Site-dependent Segmental Mobility of Polymer by Fluorescent Defocused Imaging".CHINESE JOURNAL OF POLYMER SCIENCE 35.12(2017):1488-1496.