卟啉、酞菁和它们的衍生物具有离域的大π键,易于分子组装,并对化学和热有较好的稳定性等优点,以及有可能在光存储和光学器件等方面得到应用.因此,有关它们光学非线性方面的研究比较多.然而,以共价连接的卟啉-酞菁二元分子的三阶光学非线性,尤其是它们的三阶光学非线性极化系数X~(3)值同连接卟啉、酞菁分子链长的关系报道甚少.另外,对卟啉-酞菁二元分子激发态弛豫过程的研究,有助于我们对光合作用中“特殊对”性质的了解,以 Porphyrins, phthalocyanines and their derivatives have the advantages of delocalized large π bonds, easy molecular assembly, good chemical and thermal stability, and potential applications in optical storage and optics. Therefore, there are many researches about their optical nonlinearity.However, the third-order optical nonlinearity of covalently linked porphyrin-phthalocyanine binary molecules, especially their third-order optical nonlinear polarizabilities X ~ ( 3) The relationship between the value and the molecular chain length of porphyrin and phthalocyanine is rarely reported.In addition, the study on the relaxation process of the porphyrin-phthalocyanine binary molecule contributes to the “special pair” To understand the nature of