Networks of non-planar molecules with halogen bonds studied using scanning tunneling microscopy on Au (111)
| Autor: | Min Wook Lee, Won-Jun Jang, Seungwu Han, Se-Jong Kahng, Min Hui Chang, Un Seung Jeon |
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| Rok vydání: | 2018 |
| Předmět: |
Halogen bond
Chemistry Stereochemistry Hydrogen bond Intermolecular force General Physics and Astronomy 02 engineering and technology Surfaces and Interfaces General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films law.invention Crystallography law Halogen Molecule Density functional theory Self-assembly Scanning tunneling microscope 0210 nano-technology |
| Zdroj: | Applied Surface Science. 432:110-114 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2017.01.260 |
| Popis: | Molecular networks connected by halogen bonds have been actively studied due to their ubiquity in biological systems and complementary role to hydrogen bonds. Although networks of planar molecules with halogen ligands have been studied using scanning tunneling microscopy (STM), those of non-planar molecules have not. Here, we report on the network structures of non-planar molecules containing Br-ligands, tetrabromo-spirobifluorene on Au (111), studied using STM. One and two-dimensional networks were observed and their intermolecular interactions were investigated. In two-dimensional networks, a molecule forms 3.5 Br⋯Br halogen bonds and 2 Br⋯H hydrogen bonds, as supported by our density functional theory calculation results. Our study demonstrates that intermolecular structures of non-planar molecules with halogen bonds can be probed on surfaces using STM. |
| Databáze: | OpenAIRE |
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