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

✍ Scribed by C. Price; F. Heatley; T.J. Holton; P.A. Harris

• Publisher: Elsevier Science
• Year: 1977
• Tongue: English
• Weight: 317 KB
• Volume: 49
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(77)87025-5

✦ Synopsis

13C spin-lattice relaxation times, TI, for the a-carbon nuclei of poly(r-benzyl-L%lutamate) 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 TI on molecular weight. The p-l3 C spin-spin relaxation times, T2, which decrease with increase in moIecuIar wei_eht, arc found to be influenced by both the a&i and end-overend rotational diffusion coefficients.