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Published May 15, 1975 | public
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Coherence in the excited states of multidimensional systems: Dimer and exciton dynamics in crystalline phenazine

Zewail, Ahmed H.
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Abstract

Coherence in multidimensional excited systems was established using optical and zero-field magnetic resonance spectroscopy. High resolution phosphorescence microwave double resonance at the Larmor frequency of the excited phenazine dimer gave the dynamics of optical coherence while the magnetic resonance spectra at 1.6 K gave a coherence time which was shown to be at least 10^5 times that of the stochastic-markoffian limit and approximately 11000 of the radiative lifetime. These results indicate that the cross-chain interaction does not destroy the in-chain spin correlation.

Additional Information

© 1976 Elsevier B.V. Received 10 December 1974. I wish to thank Professor C.B. Harris for his support and encouragement, and the very useful comments which were instructive. The discussions with R. Shelby and W.G. Breiland were very helpful and fruitful. This research was supported in part by the National Science Foundation and in part by the Inorganic Materials Research Division of Lawrence Berkeley Laboratory under the auspices of the U.S. Atomic Energy Ccmmission.

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August 19, 2023
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October 20, 2023