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Digitale Medien

Poly(L-alanine): Investigation of alpha-helix and betal-sheet forms by low-temperature specific heat measurements (1.5-20°K) (1972)

Finegold, Leonard ; Cude, Jesse L.

New York : Wiley-Blackwell

Biopolymers 11 (1972), S. 2483-2491

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Details

ISSN: 0006-3525

Schlagwort(e): Chemistry ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: For an ideal one-dimensional solid, the low-temperature specific heat, C, is proportional to temperature T1, 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 intermixed with a three-dimensional behavior). A specific heat anomaly has also been observed. These measurements are important in evaluating the effective elastic constants, including hydrogen bonding, of the biopolymers. They also provide essential information for vibrational theories of poly(L-alanine), which up until now have been based on high-energy data.

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/bip.1972.360111208

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