Regensburg 2007 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 26: INTERNAL SYMPOSIUM Optical Spectroscopy I

CPP 26.4: Vortrag

Donnerstag, 29. März 2007, 11:15–11:30, H40

Electronic properties of dendrimers — •Peter Reineker, Christoph Supritz, and Vasilios Gounaris — Institute of Theoretical Physics, University of Ulm, 89069 Ulm, Germany

Dendrimers, regular star like polymers, are of interest from a fundamental point of view, but also because of various possible applications, such as in light harvesting systems, in solar cells, as carriers for drug delivery or for gene manipulation, or in catalysis, etc. In our investigation of the dendrimers we have focused on optical and energy transport properties of dendrimers with C3 and C2 symmetries. We have calculated optical absorption line shapes and the time dependence of the energy transport in dependence on the size for compact and extended dendrimers. Our Frenkel exciton model takes into account the geometry of the dendrimers, local electronic excitation energies, transfer integrals, and the influence of vibrational degrees of freedom via a stochastic description.