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Fluorination of Cu(001) Surface by CF Molecules Adsorptionстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Petukhov M.N., Oreshkin A.I., Muzychenko D.A., Oreshkin S.I.
- Журнал: Journal of Physical Chemistry C
- Год издания: 2019
- Издательство: American Chemical Society
- Местоположение издательства: United States
- DOI: 10.1021/acs.jpcc.9b07408
- Аннотация: Copper surface funcionalization by defluorination of C60F48 molecules with submonolayer and monolayer coverage on Cu(001) crystal is studied by X-ray Photoelectron Spectroscopy. At room temperature, fluorinated fullerene molecules on copper surface start to lose fluorine atoms immediately after adsorption. C 1s level spectra indicate significant decrease of C-F bonds in fullerene frame for submonolayer coverage and a gradual fluorine loss with time for monolayer coverage. The energy position of C-F peak in C 1s spectrum is a function of current fluorine content in the molecule during decomposition. The fluorine 1s spectrum on copper surface has two peaks characterizing F-C bonds with fullerene cage and F-Cu bonds at lower binding energy. The energy positions of both peaks depend on fluorine content on the fullerene cage and on the copper surface. The Cu 2p spectra for submonolayer coverage show only minor changes. Meantime, Cu 2p line after monolayer adsorption has additional features of copper difluoride. The combined F 1s, C 1s and Cu 2p spectra analysis elucidates a process of fluorine loss with subsequent fluorination of the copper surface from fluorine surface superstructure to thin copper fluoride film depending on molecules coverage.
- Добавил в систему: Орешкин Андрей Иванович