高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (4): 798.doi: 10.7503/cjcu20131229

• 物理化学 • 上一篇    下一篇

电子化物Li3@calix[4]pyrrole和Li3O@calix[4]pyrrole的结构及非线性光学性质的理论研究

侯娜, 李莹, 吴迪(), 李志儒   

  1. 吉林大学理论化学研究所, 理论化学计算国家重点实验室, 长春 130023
  • 收稿日期:2013-12-16 出版日期:2014-04-10 发布日期:2014-03-11
  • 作者简介:联系人简介: 吴 迪, 男, 博士, 教授, 博士生导师, 主要从事理论化学研究. E-mail: wud@mail.jlu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 21173095, 21173098, 21303066)资助

Theoretical Studies on Structures and Nonlinear Optical Properties of Superalkali-based Electrides Li3@calix[4]pyrrole and Li3O@calix[4]pyrrole

HOU Na, LI Ying, WU Di*(), LI Zhiru   

  1. State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry,Jilin University, Changchun 130023, China
  • Received:2013-12-16 Online:2014-04-10 Published:2014-03-11
  • Contact: WU Di E-mail:wud@mail.jlu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21173095, 21173098, 21303066)

摘要:

对超碱金属电子化物Li3@calix[4]pyrrole和Li3O@calix[4]pyrrole的几何结构、 相对稳定性和非线性光学性质进行了理论研究. 2个体系分别含有4个和2个稳定异构体. 通过与Li@calix[4]pyrrole比较发现, 以超碱金属Li3和Li3O为电子供体可以给体系带来更大的非线性光学响应. 当Li3和Li3O分子平面与calix[4]pyrrole配体的4个N原子构成的平面平行作用时, 超碱金属的电离程度更高, 体系具有更大的一阶超极化率值.

关键词: 电子化物, 密度泛函理论, 超碱金属, 一阶超极化率, 非线性光学性质

Abstract:

The geometrical structures, relative stabilities and nonlinear optical properties of superalkali-based electrides Li3@calix[4]pyrrole and Li3O@calix[4]pyrrole were studied in theory. Four and two isomers were identified for Li3@calix[4]pyrrole and Li3O@calix[4]pyrrole, respectively. The results show that, replacing alkali metal with superalkalis brings larger NLO responses to the electrides. In addition, the Li3 and Li3O molecules are ionized to a greater degree when they are parallel to the plane composed by four N atoms of the calix[4]pyrrole complexant. As a result, such structures exhibit larger first hyperpolarizabilities(β0) than the other isomers.

Key words: Electride, Density functional theory, Superalkali, First hyperpolarizability, Nonlinear optical property

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