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Poly(L-alanine): Specific heat measurements at low temperatures (1.8–20°K) and one-dimensionality

✍ Scribed by Leonard Finegold; Jesse L. Cude

Publisher: Wiley (John Wiley & Sons)
Year: 1972
Tongue: English
Weight: 324 KB
Volume: 11
Category: Article
ISSN: 0006-3525
DOI: 10.1002/bip.1972.360110314

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✦ Synopsis

Low-temperature specific heat measurements have been made on random poly(Lalanine) (Pilot). The effective one-dimensional (intra-molecular polymeric) Debye temperature is 323"K, and the corresponding three-dimensional temperature is 54°K.

An anomaly, similar to that seen in polyethylene and other high polymers, is observed. The method will be a useful tool for the study of low-frequency vibrations in polypeptides.

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Poly(L-alanine): Investigation of alpha-helix and betal-sheet forms by low-temperature specific heat measurements (1.5–20°K)

✍ Leonard Finegold; Jesse L. Cude 📂 Article 📅 1972 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 642 KB

For an ideal one-dimensional solid, the low-temperature specific heat, C, is proportional to temperature 2' 1, for an ideal two-dimensional solid C is proportional to T2: We have observed such one-and two-dimensional behavior in alpha-and beta-poly (L-alanine) in the temperature range 1.5-20°K (also