合成了具有不同π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),4'-(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.结果显示这些化合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G=C双键为共轭键的化合物.
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, Ndihydroxyethyl-amino), 4-(pyridine-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.
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