- K. Saalwächter.
An Investigation of Poly(dimethylsiloxane) Chain Dynamics and Order in
its Inclusion Compound with γ-Cyclodextrin by Fast-MAS Solid-State NMR
Macromol. Rapid Commun. 23, 286-291 (2002).
The dynamics of poly(dimethylsiloxane) in its inclusion compound with
γ-cyclodextrin are elucidated using modern fast-MAS solid-state NMR
techniques. Measurements of methyl 1H-1H and 1H-13C dipolar coupling constants indicate that the polymer
undergoes a uniform motion which renders all methyl groups equivalent. The
dynamics of the Si-C bond is either characterized by a dynamic order parameter
of S = 0.72, or, assuming a stably rotating helical structure, by an
inclination angle of 73° relative to the rotation axis.