Zewail, A. H. and Harris, C. B. (1974) Coherence in electronically excited dimers. The observation of coherent dimers and its relationship to coherent excitons. Chemical Physics Letters, 28 (1). pp. 8-14. ISSN 0009-2614. doi:10.1016/0009-2614(74)80003-5. https://resolver.caltech.edu/CaltechAUTHORS:20160928-081726647
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Abstract
The coherent nature of molecular excited dimers in their triplet states is unequivocally established by a series of low temperature optically detected magnetic resonance experiments in zero field. The results clearly establish that a minimum coherence time for the dimer ψ(+) state in 1,2,4,5-tetrachlorobenzene (≈ 1.7 K) is longer than 5 × 10^(−7) s while the exchange time in these systems is approximately 16 × 10^(−12) s. This implies that the coherence persists for a time approximately 10^5 times that associated with the stochastic limit. The coherence time could, however, be even longer. Moreover, these new results clearly demonstrate that there is a direct and quantitative relationship between coherent properties of dimers and the coherent properties of triplet Frenkel excitons.
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| Additional Information: | © 1974Elsevier B.V. Received 9 May 1974. This work was supported in part by a grant from the National Science Foundation and in part by the Inorganic Materials Research Division of the Lawrence Berkeley Laboratory under the auspices of the U.S. Atomic Energy Commission. | |||||||||
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| Issue or Number: | 1 | |||||||||
| DOI: | 10.1016/0009-2614(74)80003-5 | |||||||||
| Record Number: | CaltechAUTHORS:20160928-081726647 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20160928-081726647 | |||||||||
| Official Citation: | A.H. Zewail, C.B. Harris, Coherence in electronically excited dimers. The observation of coherent dimers and its relationship to coherent excitons, Chemical Physics Letters, Volume 28, Issue 1, 1 September 1974, Pages 8-14, ISSN 0009-2614, http://dx.doi.org/10.1016/0009-2614(74)80003-5. (http://www.sciencedirect.com/science/article/pii/0009261474800035) | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 70629 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Ruth Sustaita | |||||||||
| Deposited On: | 29 Sep 2016 20:30 | |||||||||
| Last Modified: | 11 Nov 2021 04:32 |
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