Vibrational dynamics and heat capacity of beta-poly(L-serine)

被引：28

作者：

Gupta, A ^{[1
]}

Tandon, P ^{[1
]}

Gupta, VD ^{[1
]}

Rastogi, S ^{[1
]}

机构：

[1] UNIV LUCKNOW,DEPT PHYS,LUCKNOW 226007,UTTAR PRADESH,INDIA

来源：

POLYMER | 1997年 / 38卷 / 10期

关键词：

conformation; anti-parallel beta sheet; phonon dispersion;

D O I：

10.1016/S0032-3861(96)01000-2

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly(L-serine) is a poly(amino acid) having a side group (-CH2OH). It is found to exist in an anti-parallel beta sheet structure. A study of complete normal modes and their dispersion has been carried out using Higg's modification of Wilson's GF matrix method and the Urey-Bradley force field. The constants of the field have been best fitted to the Fourier transform infra-red and Raman frequencies. Repulsion and exchange df character between various pairs of modes have been observed. Heat capacity as a function of temperature, obtained from the dispersion curves via density-of-states, is in good agreement with the measurements of Roles et al. (Biopolymers, 1993, 33, 753). (C) 1997 Elsevier Science Ltd.

引用

页码：2389 / 2397

页数：9

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