NEUTRAL SOLITON DYNAMICS IN T-POLYACETYLENE - CONSISTENT PICTURE FOR MAGNETIC RESONANCES

Neutral soliton dynamics in trans-polyacetylene has been a controversi al topic for the decade. Rapid diffusion up to D(//)approximate to 10( 13) (rad/sec) resulting from spin dynamics study with T-1(-1) of NMR h as been contradicted by several ESR studies with pulse techniques. On the other hand: basic feature of the neutral soliton dynamics was conf irmed by DNP, but an analysis of such data yielded further discrepancy in temperature dependence of the diffusion rate. Experimental work su pporting the NMR result was reported using ESR relaxation and linewidt h as a function of frequency. In this report, it is proposed that the diffuse/trap model could give a consistent interpretation for them.