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Optical and magnetic resonance spectra of linear chain excitons

Hochstrasser, Robin M. and Zewail, Ahmed H. (1974) Optical and magnetic resonance spectra of linear chain excitons. Chemical Physics, 4 (1). pp. 142-150. ISSN 0301-0104. doi:10.1016/0301-0104(74)80054-6.

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The zero-field optically detected magnetic resonance (ODMR) spectra for the lowest triplet state of pairs of 1,4- dibromonaphthalene molecules is reported. The structures of the three magnetic transitions for both monomers and dimers were interpreted by incorporating in the spin hamiltonians the fine structure, hyperfine structure, and quadrupole interactions. The resonance multiplet emission from the different clusters of dibromonaphthalene-h_6 in the perdeutrohost, at different guest concentrations, gave the pairwise triplet excitation transfer matrix element β_c = 6.2 ± 0.3 cm^(−1) for the 0—0 transition. The luminescence results suggest a role for energy transport between the different clusters in the chain in the thermalization process for excitations.

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Additional Information:© 1974 Elsevier B.V. Received 26 November 1973. This research was supported by a PHS Grant GM 12592, and by LRSM-MRL at the University of Pennsylvania. We wish to thank Professor C.B. Harris and Dr. A. Nishimura for providing us with the magnitude of A_(xx) for bromine isotopes of 1,4-DBN traps. Thanks are due to Dr. J .D. Whiteman and Miss Ta-Yuen Li for helpful discussions and to Dr. Gary W. Scott for invaluable assistance in designing the apparatus.
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NIHGM 12592
University of PennsylvaniaUNSPECIFIED
Issue or Number:1
Record Number:CaltechAUTHORS:20160928-070040358
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Official Citation:Robin M. Hochstrasser, Ahmed H. Zewail, Optical and magnetic resonance spectra of linear chain excitons, Chemical Physics, Volume 4, Issue 1, April 1974, Pages 142-150, ISSN 0301-0104, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:70627
Deposited By: Ruth Sustaita
Deposited On:28 Sep 2016 22:51
Last Modified:11 Nov 2021 04:32

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