1998•Molecular crystals and liquid crystals science technology. Section A, Molecular crystals and liquid crystals/Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystalsRequires access
Exciton Trapping Mechanism in Quasi-1D Molecular Chains (J-aggregates)
Yu. V. Malyukin, O. G. Tovmachenko, G. S. Katrich, S. L. Efimova, Klaus Kemnitz
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Abstract
The exciton trapping mechanism by impurity centers in quasi-1D molecular chains (J-aggregates) is studied for the binary solutions of dimethylformamide and water. It is determined that the exciton energy transfer is occurring due to the dipole-dipole mechanism. The influence of the exciton self-trapping process on the trapping efficiency was found. It is shown that the exciton trapping occurs mainly owing to free excitons. The critical radius and trapping rate were determined.