Heterogeneous single-molecule diffusion in one-, two-, and three-dimensional microporous coordination polymers: directional, trapped, and immobile guests.
basic_science · Level V
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- Record sourced from PubMed, PMID 22551227.
- Also identified by DOI 10.1021/nl300971t.
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Abstract
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.
Medical subject headings
- Microscopy, Fluorescence
- Oxazines
- Polymers