Berlin 2018 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

O: Fachverband Oberflächenphysik

O 81: Poster Focus Session: Molecular Nanostructures on Surfaces - New Concepts towards Complex Architectures

O 81.14: Poster

Mittwoch, 14. März 2018, 18:15–20:30, Poster A

Adsorption of Porphyrin on Cu (111) - Chemisorption and physisorption — •Konstantinos Koumpouras, Jakub Baran, and Andreas J. Larsson — Applied Physics, Division of Materials Science, Department of Engineering Sciences and Mathematics, Lulea University of Technology, SE-971 87 Lulea, Sweden

In recent years, the investigation of porphyrin molecules on surfaces is of great interest due to their potential applications in several fields. The main characteristics which make them suitable candidates in these fields are that they possess an impressive variety of functional properties and are extraordinary stable. Since one research part of the porphyrins is focused on their use as elements for future molecular electronic systems, the interaction between them and solid surfaces is very important. The main advantage is the preservation of gas-phase flexibility during their deposition on metal surfaces where a number of distinct conformers are observed.

The Cu (111) surface is widely used as the adsorption "platform" for studying the different conformation of porphyrin molecules where the interactions are dominated by chemical interactions or attractive van der Waals interactions or both. Conformational changes due to the adsorption of the molecule can affect its properties but the mechanisms that drive these changes are often unclear, so detailed studies of different molecule - surface interactions by means of density functional theory is more than necessary for a comprehensive analysis and interpretation of experimental data.