Theoretical studies of relaxation processes in excited state impurity molecules: Application to naphthalene dimers
- 1 January 1981
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 74 (1) , 686-702
- https://doi.org/10.1063/1.440827
Abstract
We present a theoretical study for the relaxation modes of multilevel impurities embedded in a low temperature matrix. The equations of motion for the relevant macrovariables are derived, and the limits of validity carefully delineated. The theory is applied to triplet excitations of naphthalene dimers; the results provide the relations between the microscopic coupling and relaxation mechanisms and the observed spectroscopic data (phosphorescence,EPR, population relaxation, and energy transfer). Comparison is made with relaxation models developed previously, and the limitations of those are discussed.Keywords
This publication has 23 references indexed in Scilit:
- The effect of spectral diffusion on the phase coherence of phosphorescent triplet spinsMolecular Physics, 1979
- Coupled coherent and incoherent motion of triplet excitons: Influence on the ESR line shape of pairs of differently oriented moleculesPhysical Review B, 1979
- The “mini-exciton” in the pair of two translationally equivalent naphthalene C10H8 molecules in a C10D8 host as studied by electron spin echo and ODMR techniquesChemical Physics Letters, 1977
- Electronic Energy Transfer in Molecular CrystalsAnnual Review of Physical Chemistry, 1976
- Coherence in electronically excited dimers. II. Theory and its relationship to exciton dynamicsPhysical Review B, 1975
- Proton hyperfine interactions in triplet state pairs of naphthalene-h8 molecules in naphthalene-d8 crystalsThe Journal of Chemical Physics, 1973
- The nature of energy delocalization in molecular crystalsChemical Physics Letters, 1971
- Energy States and Intermolecular Interactions in Molecular Aggregates: Resonance Pair Spectra of Crystalline NaphthaleneThe Journal of Chemical Physics, 1970
- ESR-Untersuchungen an Naphthalin-d8: Naphthalin-h8-Mischkristallen in deren Triplett-ZustandMolecular Crystals, 1967
- Width of the Narrow "No-Phonon" Lines in the Optical Spectra of Impurities in SolidsPhysical Review B, 1964