Abstract
In continuation to our work on the oligomapping of the dispersion curves of poly(L-valine) in β form, the present work is a study of normal modes and their dispersion in the α form. The Urey Bradley force field used in Wilson’s GF matrix method has been transferred from the β form and refitted to explain the FT-IR spectra. The characteristic features of the dispersion curves involve repulsion with character exchange and tendency of certain pair of modes involving the motion of Cα atom to come closer near the helix angle. Predictive value of heat capacity is obtained from the density-of-states. It is observed that the mixed modes make the maximum contribution.
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Burman, L., Tandon, P., Gupta, V. et al. Conformational Study of α Poly(L-valine). A Vibrational Approach. Polym J 28, 474–480 (1996). https://doi.org/10.1295/polymj.28.474
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DOI: https://doi.org/10.1295/polymj.28.474