✦ LIBER ✦

Vibrational dynamics of poly(L-glutamine)

✍ Scribed by Sanjeev John La'Verne; Shweta Srivastava; Seema Srivastava; V. D. Gupta

Publisher: John Wiley and Sons
Year: 2009
Tongue: English
Weight: 250 KB
Volume: 113
Category: Article
ISSN: 0021-8995
DOI: 10.1002/app.29995

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

In the present paper, we report the Fourier transform infra‐red (FTIR) spectra and an analysis of the normal modes and their dispersion, based on the calculations for an infinite chain and Urey Bradley force field with nonbonded interactions. The results thus obtained agree well with the FTIR spectra. The heat capacity obtained from the dispersion curves via density‐of‐states is in very good agreement with the experimental measurements between 50 and 500 K. We observed that the main contribution to heat capacity comes from the modes involving the coupling of the backbone skeletal and side‐chain motions. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009

📜 SIMILAR VOLUMES

ChemInform Abstract: Vibrational Dynamic

ChemInform Abstract: Vibrational Dynamics of Poly(L-isoleucine)

✍ Sanjeev John La'Verne; Seema Srivastava; Shweta Srivastava; V. D. Gupta 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 15 KB

Synthesis of poly-L-asparagine and poly-

Synthesis of poly-L-asparagine and poly-L-glutamine

✍ S. Ariely; M. Fridkin; A. Patchornik 📂 Article 📅 1969 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 342 KB

Breathing vibration of poly-L-alanine α-

Breathing vibration of poly-L-alanine α-helix

✍ Koichi Itoh; Takehiko Shimanouchi 📂 Article 📅 1971 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 105 KB 👁 1 views

## Breathing V i b r a t i o n of Poly-1-alanine a-Helix I n a previous paper' the normal frequencies and modes were calculated for the poly-1,-alanine a-helix, arid the far-infrared ahsorpt,iori barids arid their dichroism were interpreted. Almost all the calculated vibrations have their correspo

Vibrational circular dichroism of poly(γ

Vibrational circular dichroism of poly(γ-benzyl-L-glutamate)

✍ R. D. Singh; T. A. Keiderling 📂 Article 📅 1981 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 218 KB 👁 1 views

Vibrational circular dichroism (VCD), the differential absorption of circularly polarized light by vibrational transitions, is a new technique of potential use for stereochemical analysis.13 Recent instrumental developments have allowed extension of the VCD technique down to 1250 cm-l, thereby encom

Vibrational dynamics and heat capacity o

Vibrational dynamics and heat capacity of polychloroprene

✍ Archana Gupta; Parag Agarwal; Neetu Choudhary; Poonam Tandon; V. D. Gupta 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 178 KB

## Abstract Normal modes and their dispersion have been obtained for polychloroprene in the trans form using Wilson's G F matrix method as modified by Higg's for an infinite polymeric chain. Urey Bradley force field has been used. Several new assignments, which are missing in earlier work, are repo

Ab initio-based vibrational analysis of

Ab initio-based vibrational analysis of α-poly(L-alanine)

✍ Sang-Ho Lee; Samuel Krimm 📂 Article 📅 1998 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 445 KB 👁 1 views

Polarized ir and Raman spectra have been obtained on oriented films of a-helical poly(L-alanine) (a-PLA) and its N-deuterated derivative. These improved spectra permit a more complete assignment of observed bands to A-, E 1 -, and E 2 -species modes. A new empirical force field has been refined, bas