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Exciton annihilation on dendrimeric trees |
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| Authors: | Subhadip Raychaudhuri Shaul Mukamel |
| Institution: | a Department of Biomedical Engineering, University of California Davis, Davis CA 95616, USA b Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, USA c Department of Chemistry, University of California Irvine, Irvine, CA 92697-2025, USA |
| Abstract: | Exciton-exciton annihilation on Cayley tree like dendrimer molecules are investigated via Monte Carlo simulations. Annihilation reaction of the type A+A→0 is considered to calculate the exciton density decay for multiexciton diffusion on dendrimers. Exciton density decays as a power law with a continuously varying exponent in a linear potential. For the case of realistic nonlinear potential of phenylacetylene dendrimers (Phys. Rev. Lett. 77 (1998) 4656) the excitons accumulate around the free energy minimum and annihilate each other quickly. |
| Keywords: | 36 90 +f 05 40 Fb 31 70 Hq |
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