Macroscopic hierarchical surface patterning of porphyrin trimers via self-assembly and dewetting
| Autor: | Jan C. Maan, Theo Rasing, Jan W. Gerritsen, Hans A. Heus, Sylvia Speller, Sergiy V. Lazarenko, Hans Engelkamp, Richard van Hameren, Peter C. M. Christianen, Peter Schön, Johannes A. A. W. Elemans, Arend M. van Buul, Roeland J. M. Nolte, Johan Hoogboom, Alan E. Rowan |
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| Rok vydání: | 2006 |
| Předmět: |
Multidisciplinary
Chemistry Scanning Probe Microscopy Molecular Materials Nanotechnology Correlated Electron Systems / High Field Magnet Laboratory (HFML) Porphyrin chemistry.chemical_compound Chemical physics Liquid crystal Spectroscopy of Solids and Interfaces Molecule Equidistant Mica Self-assembly Dewetting Square Millimeter Biophysical Chemistry Physical Organic Chemistry |
| Zdroj: | Science, 314, 5804, pp. 1433-1436 Science, 314, 1433-1436 |
| ISSN: | 0036-8075 |
| Popis: | The use of bottom-up approaches to construct patterned surfaces for technological applications is appealing, but to date is applicable to only relatively small areas (∼10 square micrometers). We constructed highly periodic patterns at macroscopic length scales, in the range of square millimeters, by combining self-assembly of disk-like porphyrin dyes with physical dewetting phenomena. The patterns consisted of equidistant 5-nanometer-wide lines spaced 0.5 to 1 micrometers apart, forming single porphyrin stacks containing millions of molecules, and were formed spontaneously upon drop-casting a solution of the molecules onto a mica surface. On glass, thicker lines are formed, which can be used to align liquid crystals in large domains of square millimeter size. |
| Databáze: | OpenAIRE |
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