高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (4): 587.

• 论文 • 上一篇    下一篇

推拉多烯──类胡罗卜素系列二阶非线性光学性质的理论研究

李君1, 封继康1, 李铁津1, 孙家锺2   

  1. 1. 吉林大学化学系, 长春, 130023;
    2. 吉林大学理论化学研究所
  • 收稿日期:1993-06-19 修回日期:1993-11-10 出版日期:1994-04-24 发布日期:1994-04-24
  • 通讯作者: 封继康
  • 作者简介:李君,女,32岁,博士,讲师.
  • 基金资助:

    国家自然科学基金;吉林大学分子光谱与分子结构开放实验室资助课题

A Theoretical Study of the Nonlinear Optical Second-Order Susceptibilities of Push-Pull Polyenes──Carotenoids

LI Jun1, FENG Ji-Kang1, LI Tie-Jin1, SUN Jia-Zhong2   

  1. 1. Department of Chemistry, Jilin University, Changchun, 130023;
    2. Institute of Theoretical Chemistry, Jilin University, Changchun
  • Received:1993-06-19 Revised:1993-11-10 Online:1994-04-24 Published:1994-04-24

摘要: 以INDO/CI法为基础,利用完全态求和公式计算了推拉多烯──类胡罗卜素系列分子的二阶非线性光学系数βijk、βμ、β0.研究了β0与共轭分子链长的关系,在所研究的范围内,β0与链长的2.2次方成正比。同时研究两种取代基系列,结果表明,受电子基团为 时较  更优越。

关键词: 类胡罗卜素, 二阶非线性光学系数, 激发态

Abstract: On the basis of INDO/CI method,using sum-over-state formula, the nonlinear optical second-order susceptibilities βijkμ0 of push-pull polyenes──carotenoids have been calculated.The conjugated molecular chain length dependence of β0 has been studied,in the range of our research β0 varies as the 2.2 power of the length.Two kinds of substituent series have been studied too, the calculated results illustrate that the acceptor (这里有图片19940432-584-4.gif) is superior to (这里有图片19940432-587-5.gif).

Key words: Carotenoids, Nonlinear optical second-order susceptibilities, Excited states

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