Dresden 2014 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 14: Organic/bio Molecules on Metal Surfaces II
O 14.9: Vortrag
Montag, 31. März 2014, 18:00–18:15, TRE Phy
Effect of crystal packing on the electronic properties of free base porphyrins — •Margherita Marsili1, Paolo Umari1, Andrea Goldoni2, and Maddalena Pedio3 — 1Dipartimento di Fisica -Università di Padova- 35131 Padova Italy — 2Sincrotrone Trieste, Area Science Park, 34149 Basovizza, Trieste Italy — 3IOM-CNR, TASC Area Science Park Buil., 34149 Basovizza, Trieste, Italy
Porphyrins, a group of organic aromatic molecules, are involved in important biological processes such as oxygen transfer in red blood cells, or light harvesting in plants. Similar functions can be exploited in artificial devices, therefore the understanding and control of their electronic properties is of great interest.
In this work we present the combined theoretical and experimental study of metal free H2OEP and H2TPP, addressing the electronic properties from single molecule to molecular solids. Thin films have been investigated combining valence band photoemission, inverse photoemission spectroscopy and XAS, and the results compared with isolated molecule gas phase spectra and state-of-the-art GW calculations.