Title of article :
Vibrational dynamics and phonon dispersion in poly(β-benzyl-l-aspartate) (β-sheet)
Author/Authors :
K.J.Maria Das، نويسنده , , Shantanu Rastogi، نويسنده , , Poonam Tandon، نويسنده , , V.D Gupta، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2001
Pages :
18
From page :
2295
To page :
2312
Abstract :
Poly(β-benzyl-l-aspartate) (PBLA) shows unusual conformational variety and under varying conditions of preparation it is capable of adopting four different conformations, namely left-handed α helix (αl), right-handed α helix (αr), ω helix and β pleated sheet. We present here a complete phonon dispersion and heat capacity study on the β form of PBLA. A comparison of the characteristic features and the conformational dependence of modes for α, β and ω forms of PBLA are made. It is observed that the dispersion of modes in the β form is in general larger than in the α form. Crossing over and repulsion of various dispersion branches are discussed.
Keywords :
phonons , dispersion , Repulsion , Crossing over , heat capacity
Journal title :
European Polymer Journal(EPJ)
Serial Year :
2001
Journal title :
European Polymer Journal(EPJ)
Record number :
1211564
Link To Document :
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