Magnetic-resonance studies in undopedtrans-polyacetylene(CH)x. II

Valence structures and magnetic interactions of 1-D mixed-metal complexes, [Ni 1−x Pd x X(chxn) 2 ]X 2 (0.0 ≤ x ≤ 1.0, chxn = (1 R ,2 R )-diaminocyclohexane; X = Cl, Br) studied by 15 N solid-state NMR

“…It was shown that this diffusion rate is comparable to that reported for trans-polyacetylene [12]. On the other hand, 1-D Ni complexes coordinated by the chxn ligand have attracted much attention because of their unique 1-D structures.…”

“…)-diaminocyclohexane; X = Cl, Br) were synthesized according to methods reported in the literature [12,13]. The obtained crystals were identified from their X-ray powder patterns, which corresponded well with the reported lattice parameters [13,14].…”

High‐Field ESR Spectroscopy of Conductive Polymers

“…5 gives N s (T) ∝ T experimentally obtained. 62 Extrapolation to the low temperature range allows us to suppose the lowest T 0 ≈ 60 K, where the soliton width starts to increase. Krinichnyi et al 61 have shown that a soliton in trans-PA is transferred according to the BurgersKorteweg-de-Vries theory, which described a dynamics of solitary wave in solids.…”

A utilization of internal/external quasi-static magnetic field gradients: transport phenomenon and magnetic resonance imaging of solid polymers

“…12 The R 1 dispersion results can be understood using a dynamic susceptibility theory based on a 1D random walk model. 30 It is clear that 1D diffusive motion exists in P4MeTz at the frequencies measured. Using the fluctuation-dissipation theorem, the longitudinal relaxation rate (R 1 ) is expressed as follows:…”

“…Because the diffusion coefficient of a 1D system can be estimated from the R 1 dispersion measurements, 30,31 one can uniquely determine the diffusion coefficient (D), characteristic length (L s ), and magnetic field gradient (G) by combining such a system with R 2 dispersion measurements. The analytical procedure is as follows: …”