Dresden 2011 – scientific programme

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MO: Fachverband Molekülphysik

MO 22: Femtosecond Spectroscopy IV

MO 22.5: Talk

Thursday, March 17, 2011, 15:30–15:45, TOE 317

Dynamics of Organic Molecules on Inorganic Interfaces — •Khadga Jung Karki, Danilo Roccatano, and Arnulf Materny — Center of Functional Materials and Nanomolecular Science, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany

Interfaces are important in various chemical and physical processes. Understanding the interactions on the surfaces is very important in the anticipated use of the hybrid materials. Apart from the static properties of the interfaces, the investigation of the dynamics of the organic molecules on the inorganic surfaces gives information about how the dynamics are affected by the interfaces. Results from such studies can be used to optimize the geometry/organization of the systems for better performance. In our work, we employ calculations, mainly molecular dynamics (MD) simulations, and time-resolved spectroscopy to investigate the hybrid systems. The organization of organic molecules like Chlorophylls and Carotenoids on silica surfaces, and their interaction energies are calculated from the MD simulations. The ultrafast dynamics of the molecules on the inorganic interfaces are investigated using femtosecond time-resolved spectroscopy. The results from experiments and calculations are presented.