Scanning tunneling microscopy and computational study of the self-directed growth of 1,3-butadiene and 2,3-dimethyl-1,3-butadiene on hydrogen-terminated silicon(100)-2×1
| Autor: | Robert A. Wolkow, Gino A. DiLabio, Janik Zikovsky, Shoma Sinha, Stanislav A. Dogel |
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| Rok vydání: | 2008 |
| Předmět: |
Steric effects
Silicon Dimer Scanning tunneling spectroscopy General Physics and Astronomy chemistry.chemical_element Spin polarized scanning tunneling microscopy Electrochemical scanning tunneling microscope law.invention Crystallography chemistry.chemical_compound chemistry law Density functional theory Physical and Theoretical Chemistry Scanning tunneling microscope |
| Zdroj: | Chemical Physics Letters. 458:117-121 |
| ISSN: | 0009-2614 |
| DOI: | 10.1016/j.cplett.2008.04.053 |
| Popis: | The formation of 1,3-butadiene and 2,3-dimethyl-1,3-butadiene derived nanostructures on hydrogen-terminated silicon(1 0 0)-2 × 1 was studied using ultra-high vacuum scanning tunneling microscopy and density functional theory modeling. We find that the steric interactions between the methyl groups on 2,3-dimethyl-1,3-butadiene and the surface hydrogen causes 2,3-dimethyl-1,3-butadiene to grow relatively long, linear structures along one side of a dimer row. However, the less sterically encumbered 1,3-butadiene grows short, less orderly, self-terminating structures that involve at least two dimer rows. These results show that steric effects can be used as a parameter in the rational design of organic nanostructures on silicon surfaces. |
| Databáze: | OpenAIRE |
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