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中文摘要：
用太赫兹（THz）时域光谱技术研究了室温条件下的萘醌及其衍生物1,2-萘醌、1,2-萘醌-4-磺酸钠、甲萘醌、白花丹素、胡桃醌的光谱特征,得到了各自的吸收谱和折射率。结果表明,萘醌及其衍生物在此波段有不同的吸收特征,利用太赫兹时域光谱能够鉴别分子结构存在微小差别的化合物。在对样品的吸收谱进行比较的基础上,讨论了分子结构和分子间晶格振动与THz光谱特征吸收的关系。
英文摘要：
Terahertz time-domain spectroscopy has been used to measure the spectral properties of polycrystalline 1,2- naphthoquinone, 1,2- naphthoquinone-4-sulfonic acid sodium salt , Menadione, Plumbagin, Juglone at room temperature. The absorption spectra and the indexes of refraction are obtained. It was found naphthoquinone and its derivatives showed distinct fingerprint spectra in the THz region. The result suggests that Terahertz time- domain spectroscopy can identify compounds with similar chemical constituents. By comparison of the samples＇ absorption spectra, the dependences of fingerprint spectra on the molecule structure and lattice vibrational modes in the THz region were discussed.
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