化学学报 ›› 2004, Vol. 62 ›› Issue (6): 573-577. 上一篇    下一篇

研究论文

巴比妥酸-3,4-C60吡咯衍生物的电子光谱及二阶非线性光学性质的理论研究

滕云雷1, 阚玉和1, 苏忠民1, 廖奕1, 严丽楷1, 朱玉兰2   

  1. 1. 东北师范大学化学学院功能材料化学研究所, 长春, 130024;
    2. 延边大学理工学院化学系, 延吉, 133002
  • 投稿日期:2003-05-29 修回日期:2003-10-13 发布日期:2014-02-18
  • 通讯作者: 苏忠民,E-mail:zmsu@nenu.edu.cn E-mail:zmsu@nenu.edu.cn
  • 基金资助:
    国家自然科学基金(No.20162005)资助项目.

Study on Electronic Spectra and Second-order Nonlinear Optical Property of Substituted [60]Fulleropyrrolo Barbituric Acid Derivatives

TENG Yun-Lei1, KAN Yu-He1, SU Zhong-Min1, LIAO Yi1, YAN Li-Kai1, ZHU Yu-Lan2   

  1. 1. Institute of Functional Material Chemistry, Northeast Normal University, Changchun 130024;
    2. Department of Chemistry, Science and Engineering College, Yanbian University, Yanji 133002
  • Received:2003-05-29 Revised:2003-10-13 Published:2014-02-18

利用量子化学半经验AM1和ZINDO方法研究了巴比妥酸-3,4-C60吡咯衍生物的结构规律和光谱性质.以全自由度优化几何构型为基础,计算了化合物的电子光谱.对电子跃迁进行了指认,分析了光谱红移的原因,两类化合物在400 nm以上均产生非C60特征吸收.同时用INDO/CI-SOS方法计算了所设计的体系的二阶非线性光学系数βμ,其中βμ最大可达402.3×1030 esu.体系具有A-D-A结构,其共轭性对光谱和二阶非线性光学系数有较大影响,共轭程度越高,体系的βμ值越大,而λmax红移.与巴比妥酸-3,4-C60吡咯衍生物比较,相应的硫代巴比妥酸-3,4-C60吡咯衍生物的βμ值较大.

关键词: 巴比妥酸, C60吡咯衍生物, 电子光谱, 二阶非线性光学性质, INDO/CI

The electronic spectra of fulleropyrrole derivatives were studied by using INDO/CI methods on the basis of the optimized geometries with AM1 method. It was shown that the exception of the absorption was beyond 400 nm. The nonlinear second-order optical susceptibilities βμ of the molecules were calculated according to the sum-over states (SOS) formalism. To the studied molecules, the biggest βμ value is 402.3×1030 esu. Moreover, the relations among the length of conjugate chain, the electronic spectra and the βμ were studied. The results suggested that βμ and λmax values become larger with the increase of the length of conjugate chain. Compared with the derivatives pyrrolo [3',4':1,2][60]fullerene/barbituric acid (C60PY/BA), the corresponding derivatives pyrrolo [3',4':1,2][60]fullerene/sulfur-barbituric acid (C 60PY/S-BA) have bigger βμ values.

Key words: barbituric acid, [60]fulleropyrrole derivative, electronic spectrum, nonlinear second2order optical property, INDO/CI