Observation of coexistence of 1D and 2D nanostructures in cobalt dipyrromethene trimer complexes adsorbed on a graphite surface
| Autor: | S.B. Son, Seul-Yi Lee, J.-Y. Shin, J.R. Hahn, David Dolphin, L. Ma |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Nanostructure Stereochemistry General Physics and Astronomy chemistry.chemical_element Trimer Surfaces and Interfaces General Chemistry Condensed Matter Physics Porphyrin Surfaces Coatings and Films law.invention chemistry.chemical_compound Crystallography Adsorption chemistry Highly oriented pyrolytic graphite law Graphite Scanning tunneling microscope Cobalt |
| Zdroj: | Applied Surface Science. 256:1176-1179 |
| ISSN: | 0169-4332 |
| Popis: | We report the direct observation of 1D and 2D nanostructures of cobalt dipyrromethene trimer complexes adsorbed on a highly oriented pyrolytic graphite surface using scanning tunneling microscopy (STM). STM images showed two types of ordered structures coexisting on the surface: long 1D molecular chains isolated on the terraces, and 2D hexagonal patterns confined by a 1D chain and/or a graphite step edge. These 1D and 2D structures are attributed to ‘edge-on’ and ‘face-on’ complex alignments on the surface, respectively. In both configurations, substrate-mediated molecule–molecule interactions may play a significant role in stabilizing the nanostructures. |
| Databáze: | OpenAIRE |
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