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Tuning Single‐Molecule Dynamics in Functionalized Mesoporous Silica |
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| Authors: | Timo Lebold Lea?A Mühlstein Julia Blechinger Melanie Riederer Heinz Amenitsch Dr Ralf Köhn Dr Kalina Peneva Klaus Müllen Prof?Dr Jens Michaelis Prof?Dr Christoph Bräuchle Prof?Dr Thomas Bein Prof?Dr |
| Institution: | 1. Department of Chemistry and Biochemistry and Center for Nanoscience (CeNS), Ludwig‐Maximilians‐Universit?t München (LMU), Butenandtstrasse 5‐13 (E), 81377 Munich (Germany), Fax: (+49)?89‐2180‐77622;2. Institute of Biophysics and Nanosystems Research, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042 Graz (Austria);3. Max‐Planck‐Institute for Polymer Research, Ackermannweg 10, 55128 Mainz (Germany) |
| Abstract: | Diffusion of single molecules of a substituted terrylene diimide dye in functionalized mesoporous silica films was monitored by single‐molecule fluorescence microscopy. By varying the chemical nature and density of the functional groups, the diffusion dynamics of the dye molecules can be controlled precisely. The picture shows a sketch of a dye molecule in a pore, diffusion data for different phenyl functionalization densities, and the trajectory of one molecule in a cyanopropyl‐functionalized film.  |
| Keywords: | diffusion host– guest systems mesoporous materials self‐assembly single‐molecule studies |