An investigation of rotational diffusion of poly(γ-benzyl-L-glutamate) in dilute solution by 13C nuclear magnetic relaxation

Autor: P.A. Harris, T.J. Holton, Colin Price, Frank Heatley
Rok vydání: 1977
Předmět:
Zdroj: Chemical Physics Letters. 49:504-507
ISSN: 0009-2614
DOI: 10.1016/0009-2614(77)87025-5
Popis: 13 C spinlattice relaxation times, T 1 , for the α-carbon nuclei of poly(γ-benzyl-L-glutamate) fractions in deuterated DMF are shown to be governed by the diffusion coefficient for rotation about the helix axis, leading to an approximately linear dependence of T 1 on molecular weight. The α- 13 C spinspin relaxation times, T 2 , which decrease with increase in molecular weight, are found to be influenced by both the axial and end-over-end rotational diffusion coefficients.
Databáze: OpenAIRE