Phonon dispersion in polyinosinic acid.
A study of the normal modes of vibration and their dispersion in polyinosinic acid [poly (I)] along the helix axis based on Urey-Bradley force field is reported. It leads to a better interpretation of Raman and FTIR spectra. A comparison of dispersion curves of poly (I) with poly (G) has been made. Characteristic features of dispersion curves, such as regions of high density-of-states, repulsion and character mixing are discussed. Predictive value of heat capacity as a function of temperature is reported.
Department of Physics, Integral University, Kursi Road, Lucknow 226 026, India.
Seema
S
Srivastava
Shinoo
S
Srivastava
Irfan Ali
IA
Khan
M K
MK
Pandey
V D
VD
Gupta
D005583:Fourier Analysis; D006358:Hot Temperature; D007700:Kinetics; D008956:Models, Chemical; D008962:Models, Theoretical; D060739:Phonons; D011069:Poly I / Q000737:chemistry*; D015203:Reproducibility of Results; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods*; D013059:Spectrum Analysis, Raman / Q000379:methods; D013696:Temperature; D014732:Vibration
D011069:Poly I