Spin coherence in crystalline complexes. Naphthalene: 2(1,4-diiodotetrafluorobenzene) |
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| Authors: | Kam S. Law Paras N. Prasad K.A. Martin A.M. Nishimura |
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| Affiliation: | Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14214, USA;Department of Chemistry, Westmont College, Santa Barbara, California 93108, USA |
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| Abstract: | The weak crystalline complex of naphthalene : 2(1,4-diiodotetrafluorobenzene), which exhibits naphthalene phosphorescence with a lifetime in milliseconds, is conveniently investigated by a combination of conventional and pulse techniques of optically detected magnetic resonance. The D + E and D ? E resonances, investigated here, reveal no transferred hyperfine interaction, but increased D and E values because of the external spin-orbit coupling which is found to be anisotropic. Measurements are made of T2, T2*, and T2? for this complex. This coherence study finds T2 to be similar in magnitude to what has been observed for mixed organic crystals. T2*, when compared with T2, confirms the earlier suggestion that the crystalline complex is highly ordered. T2? measurement suggests interaction with the nuclear spins of C6I2F4. |
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