Energy Transfer in Anthracene-and Tetracene-Doped Naphthalene Crystals
- 15 July 1971
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 4 (2), 628-635
- https://doi.org/10.1103/physrevb.4.628
Abstract
Energy transfer in thin crystals of anthracene-doped naphthalene and tetracene-doped naphthalene was investigated by monitoring the time evolution of the fluorescence intensities. The observed time dependence of the energy transfer cannot be explained by the theory of exciton diffusion generally invoked to explain energy transfer in molecular crystals. The time dependence is consistent with the predictions of long-range resonance energy transfer, but an anomalously large interaction strength is needed to fit the data. The magnitude of this interaction strength is the same for both types of impurity molecules despite the fact that there is a significant difference in the overlap of their absorption spectra with the host emission spectrum. Similar measurements were made on energy transfer from anthracene molecules to tetracene molecules in a naphthalene host. In this case, the mechanism for energy transfer is expected to be long-range resonance interaction, and it is found that the data can be fitted with the predictions of this theory using the theoretically derived value for the strength of the interaction. Thus the anomalies observed in the single-doped systems are associated only with host-sensitized energy transfer.Keywords
This publication has 25 references indexed in Scilit:
- Energy Transfer in Doped Organic CrystalsMolecular Crystals and Liquid Crystals, 1970
- Thermal and Sample-Size Effects on the Fluorescence Lifetime and Energy Transfer in Tetracene-Doped AnthracenePhysical Review B, 1970
- Host-Sensitized Energy Transfer in Molecular CrystalsPhysical Review B, 1970
- Comments on Random Walk and Diffusion as Models for Exciton MigrationPhysical Review B, 1970
- Evidence for Long-Range Exciton-Impurity Interaction in Tetracene-Doped Anthracene Crystals.Physical Review Letters, 1969
- Evidence for Long-Range Exciton-Impurity Interaction in Tetracene-Doped Anthracene CrystalsPhysical Review Letters, 1969
- The diffusion of the excitation energy in molecular crystalsCzechoslovak Journal of Physics, 1958
- ТЕОРИЯ ДИФФУЗИИ „ЛОК АЛИЗОВАННЫХ“ ЭКСИТО НОВ В ТВЕРДЫХ ТЕЛАХCzechoslovak Journal of Physics, 1956
- Zwischenmolekulare Energiewanderung und FluoreszenzAnnalen der Physik, 1948
- Migration and Photochemical Action of Excitation Energy in CrystalsThe Journal of Chemical Physics, 1938