Christian Hellriegel et al 2005 New J. Phys. 7 23 doi:10.1088/1367-2630/7/1/023
Tracking of single molecules as a powerful method to characterize diffusivity of organic species in mesoporous materials
Focus on Brownian Motion and Diffusion in the 21st CenturyChristian Hellriegel, Johanna Kirstein1 and Christoph Bräuchle
Show affiliationsPart of Focus on Brownian Motion and Diffusion in the 21st Century
The diffusion of individual fluorescent molecules can be observed by single-molecule tracking techniques and characterized by the analysis of their diffusional trajectory. Heterogeneities in the diffusivity that would pass undetected by conventional ensemble methods or fluorescence correlation spectroscopy are resolved by this method. This is demonstrated using four different examples in which we analyse the diffusion of single organic dye molecules in mesoporous materials. We show that this method can be used to obtain structural information from the inner structure of nanoporous materials with a resolution better than the optical diffraction limit.
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Issue 1 (January 2005)
Received 16 September 2004
Published 31 January 2005
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Tracking of single molecules as a powerful method to characterize diffusivity of organic species in mesoporous materials
Christian Hellriegel et al 2005 New J. Phys. 7 23
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