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设计、合成了以吡啶阳离子为吸电子基团的二维电荷转移非线性光学生色团分子——双四苯硼(反式)-4,4’-二{p-[N-乙基-N-羟乙基)氨基]苯亚乙烯基}-N,N’-(1,2-乙基)-2,2’-联吡啶盐和双四苯硼(反式)-N-己基一咔唑-3,6-二(p-亚乙烯基-N-羟乙基-吡啶盐),利用超瑞利散射技术(HRS)测定了这两种分子的第一超极化率β,在1064nm分别为786×10~(-30)esu和1770×10~(-30)esu.双能级模型计算得到的β_0的值分别为215×10~(-30)esu和119×10~(-30)esu.从分子结构的角度定性地分析了该类分子具有大β值的原因.
A novel two-dimensional charge-transfer non-linear optical chromophore molecule, bipyridylbenzene (trans) -4,4’-bis {p- [N-ethyl- N-hydroxyethyl) amino] -benzylidene} -N, N ’- (1,2-ethyl) -2,2’-bipyridinium and bis (phenyl) Carbazole-3,6-bis (p-vinylidene-N-hydroxyethyl-pyridine salt) was used to measure the first hyperpolarizability β of these two molecules by using Rayleigh scattering technique (HRS) 1064 nm were 786 × 10 ~ (-30) esu and 1770 × 10 ~ (-30) esu, respectively.The values of β_0 calculated by the two-level model were 215 × 10 ~ (-30) esu and 119 × 10 ~ -30) esu. From the molecular structure point of view, we qualitatively analyze the reason why these molecules have large β values.