高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (4): 554.

• 论文 • 上一篇    下一篇

“推-拉”型偶氮苯分子的光谱性质和二阶非线性光学性质

颜星中, 徐志凌, 罗挺, 杨佩青, 蔡志岗   

  1. 超快速激光光谱学国家重点实验室, 中山大学, 广州, 510275
  • 收稿日期:1996-04-10 出版日期:1997-05-24 发布日期:1997-05-24
  • 通讯作者: 蔡志岗.
  • 作者简介:颜星中, 男, 30岁, 副教授.
  • 基金资助:

    广东省自然科学基金

The Spectroscopy Characteristics and the Second-order Nonlinear Optical Properties of Novel Azobenzene Molecules with Push-pull Structures

YAN Xing-Zhong, XU Zhi-Ling, LUO Ting, YANG Pei-Qing, CAI Zhi-Gang   

  1. State Key Lab.of Ultrafst Laser Spectroscopy, Zhongshan University, Guangzhou, 510275
  • Received:1996-04-10 Online:1997-05-24 Published:1997-05-24

摘要: 研究了具有“推-拉”电子结构的4'-(N,N-二羟乙基)氨基4-硝基偶氮苯(R—HANB)衍生物的光谱性质和二阶非线性光学性质.R-HANB是一类假芪型偶氮苯分子,其激发态具有相似的能级结构,且在不同状态下均具有较高的二阶非线性光学活性.其粉末二次谐波信号多数强于分散红1,一阶超极化率与基态偶极短动量的复合量用溶剂变色法测得为>3.4×1082)C2m4/V2,其5%掺杂聚甲基丙烯酸甲酯薄膜以电晕极化测得电光系数在72×1019m4/V以上.

关键词: 4'-(N, N-二羟乙基)氨基4-硝基偶氮苯, 光谱, 粉末二次谐波, 电光系数

Abstract: In this paper, the spectroscopy characteristics and the second-order nonlinear op-tical properties of a series of push-pull chromorphores (R-HANB) based on 4'-bis (N, N-hydroxyethylene)imino-4-nitro azobenzene were studied.R-HANBwere classified as pseu-do-stilbene type molecules, which possess ultrafast photoresponsive time scale.The intensi-ties of the second-order harmonic generation of R-HANBpowder were mostly in the intensehigher than that of Disperse Red 1, while their composite values of first hyperpolarlizabilitiesand ground state permanent dipole monents were in the order of >3.4×10-82 C2m4/V2.Thesecond harmonic coefficients for the poled R-HANB-doped PMMAfilms were in the orderof >7.2×10-19 4/V.The variation of these properties of R-HANBwas explained well bythe electron and steric effects of substituents.

Key words: 4'-Bis (N,N-hydroxyethylene) imino-4-nitroazobeneze, Spectroscopy, Secondorder harmonic generation of powder, Second harmonic coefficients

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