Research on the terahertz temperature correlation of L-asparagine and L-tyrosine

Liu, Jianjun, Yang, Senquan

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Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Jianjun Liu, Senquan Yang Research on the terahertz temperature correlation of L-asparagine and L-tyrosine (Температурные корреляции терагерцовых спектров L-аспарагина и L-тирозина) [на англ. яз.] // Оптический журнал. 2021. Т. 88. № 3. С. 10–17. http://doi.org/10.17586/1023-5086-2021-88-03-10-17

Jianjun Liu, Senquan Yang Research on the terahertz temperature correlation of L-asparagine and L-tyrosine (Температурные корреляции терагерцовых спектров L-аспарагина и L-тирозина) [in English] // Opticheskii Zhurnal. 2021. V. 88. № 3. P. 10–17. http://doi.org/10.17586/1023-5086-2021-88-03-10-17

For citation (Journal of Optical Technology):

J. Liu and S. Yang, "Research on the terahertz temperature correlation of L-asparagine and L-tyrosine," Journal of Optical Technology. 88(3), 121-126 (2021). https://doi.org/10.1364/JOT.88.000121

Abstract:

In this paper, the temperature characteristics of aliphatic L-asparagine and aromatic L-tyrosine amino acids at low temperature were measured by terahertz time domain spectroscopy. The low frequency (0.1–2 THz) absorption peaks of these two amino acids at room temperature were verified by Fourier transform infrared spectroscopy and Raman spectra. The results show that the terahertz spectra of aliphatic and aromatic amino acids have different responses to temperature. With the decrease of temperature, the absorption peaks of the two amino acids shifted blue, and some amino acids appeared new absorption peaks. However, the change of absorption peak width is slightly different. In this paper, the vibrational modes of L-asparagine and L-tyrosine are calculated by density functional theory. It is concluded that the vibrational modes of L-asparagine and L-tyrosine are formed by intermolecular forces.

Keywords:

terahertz, spectroscopy, temperature, characteristics, absorption peak

OCIS codes: 300.0300, 040.2235, 010.1030

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