Selectively Laser-Excited Perylene, Matrix-Isolated in Langmuir Films, Providing a Phonon Memory
- 4 October 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 37 (14) , 909-912
- https://doi.org/10.1103/physrevlett.37.909
Abstract
By heat pulse experiments it is demonstrated that selectively narrow-band laser-excited perylene, matrix-isolated in Langmuir films provides a memory for detecting high-frequency acoustical phonons. This phonon memory, the phonon-modulated fluorescence spectrum, and Debye-Waller factor variations can be explained by the electron-phonon interaction, statistically distributed dye sites, and a model in which dye-site changes in noncrystalline matrices, containing two-level configurations, are induced by phonons and photons.Keywords
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