化学学报 ›› 1999, Vol. 57 ›› Issue (2): 224-228. 上一篇    

研究论文

若干有机共轭分子二阶非线性光学系数和结构的关系

袁爱华;沈小平;陈文健   

  1. 华东船舶工业学院焊接与材料工程系;镇江师范专科学校化学系;扬州大学师范 学院化学系.扬州
  • 发布日期:1999-02-15

The structure dependence of the second-order nonlinear optical polarizabilities of some conjugated organic molecules

Yuan Aihua;Shen Xiaoping;Chen Wenjian   

  1. Yangzhou Univ.Yangzhou
  • Published:1999-02-15

利用CNDO/S-CI程序计算了四类结构近似的有机共轭分子的二阶非线性光学系数,系统地研究了分子结构、共轭链链长、取代基的电子性质、取代位置等对有机共轭大分子二阶非线性光学性质的影响。研究结果表明,四类化合物的二阶非线性光学性质与其分子结构有着密切的关系。

关键词: 二阶, 非线性光学系数, 倍频效应, 共轭(化学键), 二苯乙烯, 二苯基甲酮, 查耳酮, 二苯基, 戊二烯酮, 极化率

In this paper, we have calculated the second-order nonlinear optical polarizabilities of four kinds of organic conjugated systems by using the CNDO/S-CI quantum chemical calculation program. The effects of the molecular structure, the molecular length, the electronic properties of substituents and the location of the substitution on the values of βvec of these molecules have been studied. The results reveal that there is a close relationship between the structure and the value of βvec.

Key words: TWO-ORDER, FREQUENCY EFFECT, CONJUGATE, STYRYL KETONE, DIPHENYLMETHANONE, CHALCONE, DIPHENYL GROUP, POLARIZABILITIES

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