Heterogeneous Single-Molecule Diffusion in One-, Two-, and Three-Dimensional Microporous Coordination Polymers: Directional, Trapped, and Immobile Guests

被引：52
|
作者：
Liao, Yi [1 ]
Yang, Seong K. [1 ]
Koh, Kyoungmoo [1 ]
Matzger, Adam J. [1 ]
Biteen, Julie S. [1 ]
机构：
[1] Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA
来源：
NANO LETTERS | 2012年 / 12卷 / 06期
关键词：
Microporous coordination polymer; single-molecule fluorescence microscopy; heterogeneous diffusion; single-particle tracking; cumulative probability distribution; PARTICLE TRACKING; MICROSCOPY; COPOLYMER; TRANSPORT;
D O I：
10.1021/nl300971t
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The diffusion of individual Nile red molecules in three different crystalline microporous coordination polymers (MCPs) is visualized with single-molecule fluorescence microscopy. By localizing molecules with high spatial resolution, the trajectories of the diffusing dyes are reconstructed with nanometer-scale precision. A detailed analysis of these tracks reveals different dynamics and guest-host interactions in each crystal as well as distinct motion types within the same system, suggesting the presence of structural heterogeneities in local environments.
引用
收藏
页码：3080 / 3085
页数：6
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