Berlin 2008 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 10: POSTERS New Materials, Organic Semiconductors
CPP 10.9: Poster
Montag, 25. Februar 2008, 16:45–19:00, Poster A
Electronic Excitation Transfer in PPV-Mesoporous Silica Matrix — •Gil Claudio1 and Eric Bittner2 — 1The University of Houston, 4800 Calhoun Road, Houston, Texas 77204, USA. Currently at the Max Planck Institute for Polymer Research, D-55021 Mainz, Germany — 2The University of Houston, 4800 Calhoun Road, Houston, Texas 77204, USA.
Electronic excitation transfer as described by Förster theory has been shown to occur in various multi-chromophore systems such as conjugated polymers. The direction of energy transfer towards the low energy states is usually random due to the random distribution of chromophores in the system. Schwartz and co-workers synthesized a system with MEH-PPV conducting polymers inserted in the channels of mesoporous silica matrices. In this system, energy transfers from the high-energy randomly oriented chromophores of polymers outside the channels to the low-energy chromophores inside the well-ordered channels. We calculated several configurations of the polymer-silica matrices and the excitation transfer in these systems. These calculations confirm the energy transfer to the targeted sites as hypothesized in experiment. Lastly, we present criteria that allow efficient energy transfer to specific targeted areas.