Abstract
Broadband measurements of the millimeter-wave and far-infrared absorption (10 GHz — 104 GHz) of anhydrons haemoglobin, lysozyme, keratin, poly-L-alanine and various polycrystalline amino-acids are reported. All measurements were extended over the temperature range from liquid helium to room temperature. For the millimeter range this was attained by using the novel oversized cavity technique. The frequency- and temperature-depedence of the millimeter wave absorption is described as due to three distinct relaxation processes on a picosecond time scale occuring in asymmetric double-well potentials. These processes are most probably assigned to the NH…OC hydrogen bridges of the peptide backbone. The far-infrared spectra are also discussed in connection with vibrations of such hydrogen bridges.
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© 1983 Springer-Verlag Berlin Heidelberg
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Genzel, L., Kremer, F., Poglitsch, A., Bechtold, G. (1983). Millimeter-wave and Far-infrared Spectroscopy on Biological Macromolecules. In: Fröhlich, H., Kremer, F. (eds) Coherent Excitations in Biological Systems. Proceedings in Life Sciences. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-69186-7_7
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DOI: https://doi.org/10.1007/978-3-642-69186-7_7
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