用化学方法合成了四苯基卟啉(TPP)、四苯基卟啉乙酸合锰(TPPMn)、四对羟基苯基卟啉(THPP),并用太赫兹时域光谱技术研究了室温条件下这三种化合物的光谱特征,得到了各自的时域谱和透射谱。结果表明不同的卟啉化合物在太赫兹波段有不同的吸收,四苯基卟啉与四苯基卟啉乙酸合锰透射峰的位置相同,可能由于金属原子在大分子环内部配位,对分子的振动模式无影响,只是增强了物质对THz的吸收。通过比较样品的透射谱,讨论了卟啉分子结构与THz光谱吸收的关系。

Chemically synthesized teraphenylporphyrin(TPP), teraphenylporphyrin acetate of manganese(TPPMn),THPP, and terahertz time-domain spectroscopy have been used to measure their spectral properties at roomtemperature. The time-domain spectra and transmission spectra are obtained. We can draw the conclusion that differentporphyrin has different absorption in THz region. TPP and TPPMn have the same transmission spectra position, whichmay be due to the metal atoms in internal coordination. The vibrational mode of molecules is not affected, and it onlystrengthens the THz absorption. By comparing with the samples transmission spectra, we discuss the relationship ofthe molecular structure of porphyrin and THz absorption.