Torsional Vibrational Modes of Tryptophan Studied by Terahertz Time-Domain Spectroscopy

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Torsional vibrational modes of tryptophan studied by terahertz time-domain spectroscopy.

The low-frequency torsional modes, index of refraction, and absorption of a tryptophan film and pressed powders from 0.2 to 2.0 THz (6.6-66 cm(-1)) were measured by terahertz time-domain spectroscopy at room temperature. It was found that there were two dominated torsional vibrational modes at around 1.435 and 1.842 THz. The associated relaxation lifetimes ( approximately 1 ps) for these modes ...

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ژورنال

عنوان ژورنال: Biophysical Journal

سال: 2004

ISSN: 0006-3495

DOI: 10.1016/s0006-3495(04)74233-2