Electron spin echo modulation and relaxation in polythiophene |
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| Authors: | D. Davidov F. Moraes A.J. Heeger F. Wudl H. Kim L.R. Dalton |
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| Affiliation: | Institute for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, California 93106, USA;Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482, USA |
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| Abstract: | Electron spin echo measurements on neutral poly (thiophene) show a clear modulation of the spin-echo decay. Analysis of the modulation and its Fourier transformed (ω) power spectrum indicates that the wave function of the spin defect is extended over ～ 25 proton nuclei. The functional behavior of the longitudinal relaxation, T1, versus temperature is very similar to that observed previously for (CH)x, although T1 values for poly (thiophene) are significantly longer. |
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