固态氨基酸的THz时域光谱研究

THz Time-Domain Spectroscopy of Amino Acids in Solid Phase

利用太赫兹时域光谱室温下对手性对映体D 酪氨酸、L 酪氨酸、外消旋化合物DL 酪氨酸和D 色氨酸、L 色氨酸、外消旋化合物DL 色氨酸在 0 1～ 2 0THz频谱范围内进行了光谱测量 .结果表明 ,所研究的氨基酸在此波段有特征吸收峰 ,THz时域光谱能够鉴别对映异构体和他们的外消旋化合物 .

We measured the absorption spectra of chiral compounds of D、L、DL-tyrosine and D、L、DL-tryptophan by terahertz time-domain spectroscopy over the frequency range from 0.1 THz to 2.0 THz at room temperature. We found six amino acids showed distinct fingerprint spectra in the THz region. Our result also suggests that we can identify the enantiomers and their racemic compounds by measuring the absorption spectra in the THz region.