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.
|Number of pages||4|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 1996 Dec 1|
ASJC Scopus subject areas
- Condensed Matter Physics