β Scribed by Jui-Lin Ong; David J. Sloop; Tien-Sung Lin
No coin nor oath required. For personal study only.
The kinetic parameters of the photo-excited triplet state of pentacene in p-terphenyl crystals have been calculated from the electron spin echo (ESE) decay curves in the temperature range of 5-300 K. The results suggest the calculated decay parameters depend strongly on guest deuteration, especially from the long-axis T x spin substate which can be explained in terms of the isotope effect on the non-radiative transitions arising mainly from the Franck-Condon factor. The relative populations of the triplet sublevels and spin-lattice relaxation show little or no dependence on the deuteration of the pentacene molecule.
π SIMILAR VOLUMES
## Rcceivcd 21 Jl?ly 1975 We present a theoretical model for describing spin coherence in photoexcited triplet states in zero-field under the influence of vibronic relaxation. From a comparison with experimental results in parabenzoquinone we obtain information about the properties of the excited
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