烷氧基酞菁铅类反饱和吸收化合物的制备及性质研究

合成了三种烷氧基取代的金属酞菁铅，利用元素分析、红外光谱、核磁共振氢谱(HNMR)等方法，验证了化合物的分子结构。将它们分别掺入聚甲基丙烯酸甲酯(PMMA)中，制备出具有非线性光学性质的复合材料。测试了它们在甲基丙烯酸甲酯中的可见光谱(200～800nm)。用波长为532nm的YAG倍频调Q脉冲激光以8ns的脉冲速率测试复合材料的反饱和吸收的光限幅特性，使用现象学的方法对它们的光限幅现象进行了拟合。拟合结果与实验结果基本一致。三种化合物中叔丁烷氧基酞菁铅反饱和吸收效果最好，这是由于短支链基团有利于酞菁环自身结构的共轭性提高，并能够阻止酞菁分子间发生低聚。

Preparation and Properties Research of Reverse Saturable Absorption Materials of Alkoxy Phthalocyanine Pb

Three derivatives of alkoxy phthalocyanine Pb were synthesized. The structures of products were characterized by means of infrared (IR), hydrogen nuclear magnetic resonance (HNMR) spectra and elementary analysis. The ultraviolet-visible spectra were measured between 200～800 nm when the derivatives were in polymethyl methacrylate (PMMA) solution. Three derivatives were mixed into PMMA solution independently, then the composite materials which had nonlinear optical properties were prepared. The nonlinear reverse saturable absorption measurements of composite materials were performed with a frequency-doubled Q switched Nd∶YAG laser with 8-ns laser pulse at 532 nm. The factors that affect the performance of reverse saturable absorption and optical limiting of the materials were discussed. A phenomenological model is used to describe optical limiting phenomena, it meets with the experiment results largely. The effect of saturable absorption of alkoxy phthalocyanine Pb is the best ones among these compounds. It is due to the improvement of its conjugate characteristics and avoiding low polymerization of molecules.