1H NMR study of spin dynamics in the I2-doped PBMPV conducting polymers

C. H. Lee, Cheol Eui Lee, J. I. Jin, B. K. Nam

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Abstract

We have studied the room-temperature spin dynamics in a series of I2-doped poly[2-buthoxy-5-methoxy phenylenevinylene] (PBMPV) conducting polymers by means of 1H NMR in the Larmor frequency range 20 to 45 MHz. The nuclear magnetization recovery of the I2-doped (PBMPV) conducting polymers showed a stretched-exponential form, and the spin-lattice relaxation rate was inversely proportional to the square root of the 1H Larmor frequency. Our results are consistent with the one-dimensional spin diffusion of the mobile spin-carrying polarons along the main chain, and gave the intrachain diffusion constant as a function of the electrical conductivity.

Original languageEnglish
Pages (from-to)1896-1899
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume53
Issue number4
Publication statusPublished - 1996 Dec 1

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ASJC Scopus subject areas

  • Condensed Matter Physics

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