Self-Assembled Polystyrene Beads for Templated Covalent Functionalization of Graphitic Substrates Using Diazonium Chemistry
| Autor: | Oleksandr Ivasenko, Steven De Feyter, Ana M. Bragança, John Greenwood, Hans Van Gorp, Peter Walke, Brandon E. Hirsch |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Aryl 02 engineering and technology Bead 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound Chemical engineering chemistry Covalent bond law visual_art visual_art.visual_art_medium Molecule General Materials Science Polystyrene Self-assembly Scanning tunneling microscope 0210 nano-technology |
| Zdroj: | ACS Applied Materials & Interfaces. 10:12005-12012 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.7b18969 |
| Popis: | A network of self-assembled polystyrene beads was employed as a lithographic mask during covalent functionalization reactions on graphitic surfaces to create nanocorrals for confined molecular self-assembly studies. The beads were initially assembled into hexagonal arrays at the air-liquid interface and then transferred to the substrate surface. Subsequent electrochemical grafting reactions involving aryl diazonium molecules created covalently bound molecular units that were localized in the void space between the nanospheres. Removal of the bead template exposed hexagonally arranged circular nanocorrals separated by regions of chemisorbed molecules. Small molecule self-assembly was then investigated inside the resultant nanocorrals using scanning tunneling microscopy (STM) to highlight localized confinement effects. Overall, this work illustrates the utility of self-assembly principles to transcend length scale gaps in the development of hierarchically patterned molecular materials. ispartof: ACS Applied Materials and Interfaces vol:10 issue:14 pages:12005-12012 ispartof: location:United States status: published |
| Databáze: | OpenAIRE |
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