高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (5): 1034.doi: 10.7503/cjcu20170549

• 物理化学 • 上一篇    下一篇

吡啶取代的Lindqvist型多酸的线性和非线性光学性质及阳离子检测功能的理论研究

严玲玲, 刘春光, 蒋梦绪   

  1. 东北电力大学化学工程学院, 吉林 132012
  • 收稿日期:2017-08-10 出版日期:2018-04-16 发布日期:2018-04-16
  • 作者简介:

    联系人简介: 刘春光, 男, 博士, 教授, 主要从事多金属氧酸盐类化合物的量子化学理论研究. E-mail: liucg407@163.com

  • 基金资助:
    国家自然科学基金(批准号: 21373043)资助.

Theoretical Study on Cation Detection Ability of Pyridine-substituted Lindqvist-type Ployoxometalates Based on Linear and Nonlinear Optical Properties

YAN Lingling, LIU Chunguang*, JIANG Mengxu   

  1. College of Chemical Engineering, Northeast Electric Power University, Jilin 132012, China
  • Received:2017-08-10 Online:2018-04-16 Published:2018-04-16
  • Contact: LIU Chunguang
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21373043).

摘要:

采用密度泛函理论B3LYP方法计算了吡啶取代的Lindqvist型多酸(POMs)的线性(最大吸收波长, λmax)和非线性光学(NLO)[超瑞利散射(HRS)的第一超极化率, βHRS]性质, 探讨了其作为潜在阳离子检测剂的可能性. 金属离子吸附能计算结果表明, 吡啶取代的Lindqvist型多酸配体与金属离子之间均有较强的相互作用, 相互作用强度大小顺序为Ni2+>Cu2+>Co2+>Fe2+>Zn2+>Mg2+>Ca2+. 电子光谱和βHRS计算结果表明, 引入适当的供、 受电子基团对该多酸配体进行修饰可有效调节线性和二阶NLO性质; 同时, 吡啶取代的Lindqvist型多酸对7种金属离子(Cu2+, Zn2+, Ca2+, Mg2+, Ni2+, Co2+, Fe2+)表现出了不同的检测行为.

关键词: 密度泛函理论, 非线性光学, Lindqvist型多酸, 阳离子检测, 第一超极化率

Abstract:

Linear(wavelength of maximum absorption, λmax) and nonlinear optical(hyper-Rayleigh scattering first hyperpolarizability, βHRS) properties of a series of pyridine-substituted Lindqvist polyoxometalates(POMs) were studied via density functional theory(DFT)-B3LYP method. The potential abilities for metal cation sensor of these Lindqvist POMs were probed. The calculated adsorption energy of metal cation on these Lindqvist POM ligand indicates that the interaction strength of them decreases in the order of Ni2+>Cu2+>Co2+>Fe2+>Zn2+>Mg2+>Ca2+. The calculated results indicate that the linear and nonlinear optical properties can be effectively tuned by the introduction of electron donor and acceptor. Meanwhile, pyridine-substituted Lindqvist POM ligands display various detection functional for the seven metal cations(Cu2+, Zn2+, Ca2+, Mg2+, Ni2+, Co2+, Fe2+).

Key words: Density functional theory, Nonlinear optical, Lindqvist-type ployoxometalate, Cation detection, First hyperpolarizability

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