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Proton magnetic resonance investigation of solid polyamino acids

✍ Scribed by E.R. Andrew; R. Gaspar Jr.; W. Vennart

Publisher
Elsevier Science
Year
1976
Tongue
English
Weight
304 KB
Volume
38
Category
Article
ISSN
0009-2614

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✦ Synopsis

A proton magnetic resonance and relaxation investigation has been carried out on solid poly-L-alnnine, poly-L-leucine, Poly-L-valina and polyplycine, between 110 and 350 K. For the first three the relaxation is attributed to methyl froup reorientation chkcturizcd by aclivxtion cncrgics ot 7 to 9 kJ mole -I. Significant nonexponential rccovcry of matjnctization was cncountcrcd am3 ascribed to correlated motion of three-spin systems. Relaxation in polyglycine was two orders of magnitude longer.

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