Ionic conductivity and NMR self-diffusion in poly(macromonomer)s of vinylbenzyl poly(ethylene oxide)s

Tsukahara Y; Hashimoto K; Kaeriyama K; Niwa A; Mehta MA; Fujinami T; Hayamizu K

Chemistry Letters, Vol.30, No.6, 490-491, 2001

Tsukahara Y, Hashimoto K, Kaeriyama K, Niwa A, Mehta MA, Fujinami T, Hayamizu K

Ionic conductivity and NMR self-diffusion in the complex of poly(macromonomer)s of VB-PEO doped with the lithium salt Li(CF3SO2)(2)N were investigated. Ionic conductivity was enhanced by the multibranched structure of the poly(macromonomer). The NMR spin-lattice relaxation times showed that the hopping motion of the Li ions were correlated with PEO chain motion. NMR self-diffusion data showed evidence of the multisite diffusion of anions in the complex at near room temperature.