中文摘要：

合成了具有不同兀电子共轭键3个新的有机光学材料4-（吡啶-4-乙烯），4＇-（N，N-二羟乙基氨基）二乙烯苯（a），N-（（4-（N，N-二羟乙基氨基）-苯亚甲基）-4-（吡啶-4-乙烯）苯胺（b）和4-（吡啶-4-乙烯），4L（N，N-二羟乙基氨基）偶氮苯（c），使用脉宽8ns波长532nm调Q倍频ns／ps Nd：YAG脉冲激光系统测试了它们的非线性光学性能，研究了分子结构与非线性光学性能之间的关系。结果显示这些化舍物具有大的三阶非线性光学系数，这可能来源于它们长的D-π-A共轭电子结构；以N-N双键为共轭键的化合物的非线性光学性能优于以C=N或C=C双键为共轭键的化合物。

英文摘要：

Three novel organic optical materials with different p electron conjugation bond structure, 4 ＇-（N, N-dihydroxyethylamino）,4-（pyridine-4-vinyl） stilbene （a）, N-（4-N,N-dihydroxy-ethylaminobenzylidene）.4-（pyridine-4-vinyl）aniline （b）, 4＇-（N,N- dihydroxyethyl-amino）, 4-（pyridin-4-vinyl）azobenzene （c）, were prepared, their nonlinear optical properties were determined by using 8ns laser pulses at 532nm wavelength, and the relationship between p electron conjugation bond structure of molecules and nonlinear optical properties was investigated. The results show that these compounds possess large nonlinear optical properties, which are attributed to the long D-π-A conjugation structure. The nonlinear optical properties of compound with N-N double bond as conjugation bond are superior to that of compounds with C=N or C=C double bond.