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芳香族氨基酸的太赫兹光谱研究 被引量:52

THz spectrum of aromatic amino acid
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摘要 利用太赫兹时域光谱研究了三种芳香族氨基酸,即酪氨酸、色氨酸和苯丙氨酸,在0.2—1.6THz波段的光学特性,得到了对应的吸收谱.对比各自的吸收谱发现,酪氨酸和色氨酸分别在0.976THz和1.465THz有明显的吸收峰,而苯丙氨酸则没有明显的吸收峰.利用密度泛函(DFT)理论初步计算表明,氨基酸在THz波段的吸收是由分子转动或扭动造成的,氨基酸的不同结构造成了它们在THz波段不同的吸收峰位.另外,还得到了三种氨基酸在该波段的折射率谱并首次定量给出了三种氨基酸在0.2—1.6THz波段的平均折射率.酪氨酸、色氨酸和苯丙氨酸的平均折射率分别为1.507,1.526和1.686.这项研究不仅为研究生物分子结构和动力学提供了新的理论和实验方法,而且对进一步利用THz时域光谱研究其他生物大分子具有借鉴意义. We have studied the optical properties of three kinds of aromatic amino acids including tyrosine, tryptophane and phenylalanine using THz time domain spectroscopy between 0.2 and 1.6 THz. Comparing their absorption spectra, we find that tyrosine and tryptophane have sharp absorption peaks at 0.976THz and 1.465THz respectively, while phenylalanine does not have absorption peak in this range. This result shows the capability of THz time domain spectroscopy to distinguish different molecules. Calculating by density functional, we found that the absorption peaks are caused by the rotation and torsion of the molecules. The average refractive indexes of these three amino acids are also obtained: they are 1.507, 1.526 and 1.686 respectively. This work not only is significant for the research of molecular structure and molecular dynamics, but can also provide reference for studying other large biological molecules by THz time domain spectroscopy.
出处 《物理学报》 SCIE EI CAS CSCD 北大核心 2005年第7期3094-3099,共6页 Acta Physica Sinica
基金 国家自然科学基金(批准号:10390160 10474067) 北京市教育委员会科技发展基金(批准号:KM200410028004) 北京市纳米光电子重点实验室开放基金资助的课题.~~
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参考文献13

  • 1Mickan S P and Zhang X C 2003 Int. J. High Speed Electron.Syst. (Singapore) 13 601.
  • 2文锦辉 林为株.物理学进展,1998,18:1742-1742.
  • 3王少宏,B.Ferguson,张存林,张希成.Terahertz波计算机辅助三维层析成像技术[J].物理学报,2003,52(1):120-124. 被引量:19
  • 4Cao J C, Liu H C and Lei X L 2000 J. Appl. Phys. 87 2867.
  • 5Cao J C 2003 Phys. Rev. Lett. 91 237401.
  • 6Cao J C and Lei X L 2003 Phys. Rev. B 67 085309.
  • 7Shen Y C, Upadhya P C, Linfield E H and Davies A G 2004 Vibrational Spectroscopy 35 111.
  • 8Markelz A G and Roitberg A 2000 Chem. Phys. Lett. 320 42.
  • 9Taday P F, Bradley I V and Arnone D D 2003 Journal of Biological Physics 29 109.
  • 10刘锐,顾春明,贺莉蓉,吴森,沈文忠,小川博司,郭其新.ZnTe晶体中光学整流产生的THz辐射及其电光探测研究[J].物理学报,2004,53(4):1217-1222. 被引量:27

二级参考文献54

  • 1[1]Hu B B and Nuss M C 1995 Opt. Lett. 20 1716
  • 2[2]Wu Q, Hewitt T D and Zhang X C 1996 Appl.Phys.Lett. 69 1026
  • 3[3]Wu Q, Sun F G, Campbell and Zhang X C 1996 Appl.Phys.Lett. 68 3224
  • 4[4]Mittleman D M, Jacobson R H and Nuss M C 1996 IEEE Journal of Selected Topics in Quantum Electronics 2 679
  • 5[5]Mittleman D M, Hunsche S, Boivin L and Nuss M C 1997 Opt. Lett. 22 904
  • 6[6]Zhang X C 1997 OSA TOPS on Ultrafast Electronics and Optoelectronics M Nuss and J Bowers eds 13 OSA
  • 7[7]Jiang Z and Zhang X C 1998 Ultrafast phenomena XI 63(Berlin:Springer-Verlag) 197
  • 8[8]Hunsche S, Mittleman D M, Koch M and Nuss M C 1998 IEICE Transactions on Electronics E 81-C 269
  • 9[9]Hunsche S, Koch M, Brener I and Nuss M C 1998 Opt. Commun. 150 22
  • 10[10]Jiang Z and Zhang X C 1998 Opt.Lett. 23 1114

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