Journal
JOURNAL OF BIOLOGICAL PHYSICS
Volume 38, Issue 3, Pages 405-413Publisher
SPRINGER
DOI: 10.1007/s10867-012-9261-0
Keywords
THz-TDS; L-alanine; Solid-state theory
Categories
Funding
- National Basic Research Program of China [2007CB310405]
- Hundreds of Talents Programs of the Chinese Academy of Sciences [J08-029]
- Innovative Project of the Chinese Academy of Sciences [YYYJ-1123-4]
- CAS/SAFEA International Partnership Program for Creative Research Teams
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Terahertz absorption spectrum (0.5-4.0 THz) of L-alanine in the solid phase was measured by terahertz time-domain spectroscopy at room temperature. Simulations utilizing gaseous-state and solid-state theory were performed to determine the origins of the observed vibrational features. Our calculations showed that the measured features in solid-state materials could be well understood by considering the crystal packing interactions in a solid-state density functional theory calculation. Furthermore, intermolecular vibrations of L-alanine are found to be the dominating contributions to these measured spectral features in the range of 0.5-4.0 THz, except that located at 3.11 THz.
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