1968
DOI: 10.1002/macp.1968.021190112
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High resolution NMR investigation on poly(β‐alanine) and poly(α‐methyl‐β‐alanine)

Abstract: Poly( p-alanine), -(-NH -CH2-CH2 -CO-), -, and poly(a-methyl-(j-alanine), -(-NH-CH2-CH(CH3)-CO-),-,dissolved in trichloroacetic acid, have been analyzed by high resolution NMR. In the case of poly(9-alanine) it has been possible to show that the gauche-conformer, obtained by rotation around the CHz-CHz bond of the monomer unit, has a lower enthalpy than the trans-conformer. This might suggest that the CO and NH groups on adjacent carbons undergo some positive interaction which could reduce the enthalpy of the … Show more

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Cited by 7 publications
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