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设计合成了一种以均三嗪为核,苯乙烯基、氮碳双键共轭键为桥,羟乙氧基为供电子基团的八极分子,用IR、EA、1H MNR、UV-Vis和DSC-TG等对其结构和性能进行了表征,采用粉末倍频法对其二阶非线性光学性能进行了测试.实验表明:在N,N-二甲基甲酰胺(DMF)中该八极分子的最大吸收波长为411.5 nm,热分解温度为397℃,倍频效应强度为磷酸二氢钾(KDP)晶体的1.7倍,具有较好的热稳定性和透明性,可用于制备性能优异的非线性光学材料.
An octupole molecule with triazine as nucleus, styryl group and nitrogen-carbon double bond as bridge and hydroxyethoxy as electron donating group was designed and synthesized. IR, EA, 1H MNR, UV- Vis and DSC-TG were used to characterize their structures and properties, and the second-order nonlinear optical properties were tested by powder double-frequency method.The experimental results showed that the The octupole has a maximum absorption wavelength of 411.5 nm, a thermal decomposition temperature of 397 ° C and a frequency doubling effect strength of 1.7 times that of potassium dihydrogen phosphate (KDP) crystals, which has good thermal stability and transparency and can be used for preparing performance Excellent nonlinear optical material.