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化学学报
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化学学报 ›› 2000, Vol. 58 ›› Issue (4): 384-389. 上一篇    下一篇

研究论文

吡啶盐二维电荷转移分子的设计、合成和超级化氯的测定

孟凡青;许东;任诠;袁多荣;吕孟凯;张光辉;赵显;王新强;郭世义;房昌 水;汪昕;陆祖宏;崔一平   

  1. 山东大学晶体材料国家重点实验室;东南大学分子与生物分子电子学国家重点实 验室
  • 发布日期:2000-04-15

Desigh, synthesis of two-dimensional charge transfer molecules based on pyridinium salts and determination of their first hyperpolarizability

Meng Fanqing;Xu Dong;Ren Quan;Yuan Duorong;Lu Mengkai;Zhang Guanghui;Zhao Xian;Wang Xinqiang;Guo Shiyi;Fang Changshui;Wang Xin;Lu Zuhong;Cui Yiping   

  • Published:2000-04-15

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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－双四苯鹏(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-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级化率β，在1064nm分别为786x10^-^3^0esu和1770x10^-^3^0esu。双能级模型计算得到的β0的值分别为215x10^-^3^0esu和119x10^-^3^0esu。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。

关键词: 吡啶P, 电荷转移, 分子设计, 极化率, 非线性光学

Two new two-dimensional charge transfer (2DCT) chromophore molecules for nonlinear optics (NLO) were designed and synthesized with pyridinium as electron acceptor gorup. They are tranes -4,4-di[p-[N- ethyl-N-hydroxyethyl) amino] styry}-N,N'-(1,2-ethylene)-2,2'- bipyridinium ditetraphenylborate and trans-N-hexyl- carbazole-3,6-di(p- ethenyl-N-hydroxyethyl-pyridinium) dietrapenylborate. The first hyperpolarizability(β) values were determined by Hyper-Rayleigh Scattering (HRS) techique.The large βvalues are obtained as 786x10^- ^3^0esu and 1770x10^-^3^0esu at 1064 nm and corresponding β0 are 215x10^-^3^0esu and 119x10^-^3^0esu calculated according to two-level model, respectively. The large value of βwas explained qualitatively from the point of view of molecular structure.

Key words: PYRIDINE P, CHARGE TRANSFER, MOLECULAR DESIGN, POLARIZABILITIES, NON LINEAR OPTICS

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