Three-dimensional single molecule rotational diffusion in glassy state polymer films

被引：94

作者：

Bartko, AP ^{[1
]}

Xu, KW ^{[1
]}

Dickson, RM ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.89.026101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Measuring three-dimensional orientational motions of many individual molecules within glassy state poly(methyl methacrylate) has enabled nanoscopic probing of bulk-obscured polymer dynamics. Complementing bulk studies, the measured distributions of nanoscale barriers to rotational motion afforded by our single molecule orientational methods directly probe the spatial heterogeneity and nanoscopic alpha-relaxation dynamics deep within the glassy state.

引用

页码：261011 / 261014

页数：4

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