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

页码：3080 / 3085

页数：6

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