AI Article Synopsis
- We used C60-functionalized scanning tunneling microscope tips to study how fluorine attaches to graphite.
- We can identify which fluorine atoms are bound to graphite through ionic bonds versus covalent bonds based on electron standing wave patterns.
- The ratio of ionic to covalent C-F bonds remains consistent, not affected by temperature, between 200 and 300 degrees Celsius during the fluorination process.
Article Abstract
Using C60-functionalized scanning tunneling microscope tips, we have investigated the adsorption of fluorine on graphite. Based on characteristics of the accompanying electron standing waves, we are able to distinguish the fluorine adatoms that have bonded ionically to the graphite surface from those that have formed covalent bonds with the surface. This result permits determination of the ratio of ionic to covalent C-F bonds on graphite obtained by gas phase fluorination, which seems to be temperature-independent between 200 and 300 degrees C under the reaction conditions used.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC27021 | PMC |
| http://dx.doi.org/10.1073/pnas.190325397 | DOI Listing |
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