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研究了取代基对卟啉三阶光学非线性和激发态弛豫过程的影响，发现在同一取代位置，推电子基团取代使得卟啉三阶光学非线性极化系数x（3）值相对增加，而吸电子基团取代使得卟啉x（3）值相对减少；对同一取代基在不同取代位置，发现推电子基团在邻位取代的x（3）值大于其在对位取代卟啉的x（3）值。而吸电子基团在邻位取代的x（3）值小于其在对位取代卟啉的x（3）值；另外，还发现推电子基团取代的卟啉弛豫过程比吸电子基团取代的卟啉弛豫过程快7倍。
The effects of substituents on the third order optical nonlinearity of the porphyrins and the relaxation process of the excited states were investigated. It was found that the substitution of the push electron groups at the same substitution position resulted in the relative increase of the third order nonlinear optical polarization coefficient x (3) , While the substitution of electron-withdrawing group decreased the value of porphyrin x (3). For the same substituent at different substitution sites, it was found that the x (3) value of the substitution of the electron donating group at the ortho position was greater than that at the para- X (3) value. While the x (3) value of the electron-withdrawing group substituted in the ortho position is smaller than that of the x (3) value of the para-substituted porphyrin. In addition, it is also found that the electron- The substituted porphyrin relaxes seven times faster.