Two tetrastyryl derivatives (S1, S2) were designed and synthesized by Schiff base reaction. The structure and properties of the compounds were characterized by FT-IR, UV–Vis, TG and Z-scan. The structure-activity relationship of S1 and S2 was studied in detail. The combination of large π conjugation and charge transfer gives the two tetrastyryl derivatives strong nonlinear optical properties. Under picosecond pulse excitation at 532 nm with 3 μJ energy, the nonlinear absorption coefficients of S1 and S2 are 6.5 × 10⁻¹² m/W, 9 × 10⁻¹² m/W, respectively. The third harmonic intensities of S1 and S2 are 215 and 25 times that of SiO₂, respectively. S1 and S2 can be used as nonlinear optical materials and have a certain application prospect in the field of laser protection and frequency conversion.

通过席夫碱反应设计并合成了两种四苯乙烯基衍生物（S1，S2）。通过 FT-IR、UV-Vis、TG 和 Z-scan 对化合物的结构和性质进行了表征。详细研究了 S1 和 S2 的构效关系。大 π 共轭和电荷转移的结合赋予了两种四苯乙烯基衍生物很强的非线性光学特性。在532 nm、3 μJ能量的皮秒脉冲激发下，S1和S2的非线性吸收系数分别为6.5×10 ^-12  m/W、9×10 ^-12  m/W。S1和S2的三次谐波强度分别是SiO _{2的215和25倍}， 分别。S1和S2可作为非线性光学材料，在激光保护和变频领域具有一定的应用前景。