Detection of Site-dependent Segmental Mobility of Polymer by Fluorescent Defocused Imaging
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Detection of Site-dependent Segmental Mobility of Polymer by Fluorescent Defocused Imaging
Detection of Site-dependent Segmental Mobility of Polymer by Fluorescent Defocused Imaging
高分子科学(英文版)2017年35卷第12期 页码:1488-1496
Affiliations:
a.Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
b.The University of Chinese Academy of Sciences, Beijing 100049, China
Author bio:
Jiang Zhao (赵江), E-mail:jzhao@iccas.ac.cn
Funds:
National Basic Research Program of China(2014CB643601);Supplementary material is available in the online version of this article at http://dx.doi.org/10.1007/s10118-017-1976-8.
Detection of Site-dependent Segmental Mobility of Polymer by Fluorescent Defocused Imaging[J]. 高分子科学(英文版), 2017,35(12):1488-1496.
De-sheng Li, Jing-fa Yang, Jiang Zhao. Detection of Site-dependent Segmental Mobility of Polymer by Fluorescent Defocused Imaging[J]. Chinese Journal of Polymer Science, 2017, 35(12): 1488-1496.
Detection of Site-dependent Segmental Mobility of Polymer by Fluorescent Defocused Imaging[J]. 高分子科学(英文版), 2017,35(12):1488-1496.DOI: 10.1007/s10118-017-1976-8.
De-sheng Li, Jing-fa Yang, Jiang Zhao. Detection of Site-dependent Segmental Mobility of Polymer by Fluorescent Defocused Imaging[J]. Chinese Journal of Polymer Science, 2017, 35(12): 1488-1496.DOI: 10.1007/s10118-017-1976-8.
Detection of Site-dependent Segmental Mobility of Polymer by Fluorescent Defocused Imaging
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.
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相关机构
Hefei National Research Center for Physical Sciences at the Microscale, Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Polymer Science and Engineering, University of Science and Technology of China
College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University
Department of Polymer Science and Engineering, State Key Lab of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University
Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science & Engineering, East China University of Science & Technology
Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University