INVESTIGADORES
PASSEGGI mario Cesar Guillermo
congresos y reuniones científicas
Título:
Póster: KPFM and DFT as tools to correlate the relationship between charge distribution on surfaces and molecular orientation of dendritic adsorbates
Autor/es:
FARIAS, E.D.; ZOLOFF-MICHOFF, M.E.; SUELDO-OCELLO, V.N.; BRUNETTI, V.; PASSEGGI (JR.), M.C.G.; GLATZEL, T.
Lugar:
Virtual event, Ciudad de México (México), 17-19 August
Reunión:
Conferencia; e-CPM2020, 2020 Express Conference on the Physics of Materials and its application in Energy and Environment, A free "on-line" event; 2020
Institución organizadora:
Members of the scientific community in Latin America and renowned scientists from all over the world
Resumen:
The interaction between metals and organic layers has received a lot of attention lately due to its relevance in future applications based on hybrid organic/inorganic systems at the nanoscale. Modifying surfaces through self-assembly represents an interesting tool for tailoring superficial physical and chemical properties. This work studies the adsorption of aryl-dendrons on carbon, analysing its effect on the work function (WF). KPFM is used to assess local WF variations, according to the arrangement of the organic layer. The images obtained show a connection between the WF variation and the spatial order, which varies depending on whether the areas are partially covered or densely packed. DFT calculations were performed to verify the correlation between the WF variation and the effective molecular dipole moment. The overall results show the importance of controlling the distribution of these molecular assemblies at a nanoscopic scale to achieve the desired properties.Expuso: FARIAS, E.D.