新型非线性光学分子的合成及二阶极化率测定  

Synthesis of a Novel Nonlinear Optical Molecule and Related Testing for μ_gβ Value

作　　者：韩莉坤[1] 蒋亚东[1] 蔡渊[1] 李伟[1] 

机构地区：[1]电子科技大学光电信息学院电子薄膜与集成器件国家重点实验室,四川成都610054

出　　处：《光电子．激光》2007年第4期447-449,共3页Journal of Optoelectronics·Laser

基　　金：部级预研基金资助项目(51402040205)

摘　　要：用3-羟基-3-甲基-2-丁酮、丙二腈和N,N-二乙基对苯甲醛,经羟醛缩合反应制备了一种新型有机小分子二阶非线性光学(NLD)材料DCDHF-2-V。并采用元素分析、红外光谱和核磁共振等手段对目标产物进行了结构表征。示差扫描量热法(DSC)和热矢量分析(TGA)研究结果表明,化合物的熔点和耐热温度分别为241℃和270℃。通过化合物的溶致变色效应,在双能级模型的基础上确定了分子的μgβCT值,在激光基频波长λ=1064nm时,μgβCT=6520×10-48esu。A novel second-order nonlinear optical chromophore（DCDHF-2-V） was synthesized from 3-Hydroxy-3-methyl-2- butanae,propanedinitrile and 4-diethylaminobenzaldehyde by aldol condensation reaction. Molecular structural characterstics was investigated by elemental analysis,FTIR and 1 H-NMR spectra. The melting point obtained from differential scanning calorimetry（DSC） thermogram was almost 251 ＇C ,and the compound showed a thermal stability up to 270 ℃ from thero- mogravimetric analysis（TGA）. The second-order nonlinear optics（NLO） properties of the chromophore were measured by solvatochromic method. From the quantum-mechanical two-level model,it can be obtained that the/zgβCT value of DCDHF- 2-V is 6 520 × 10^- 48 esu at the wavelength of 1 064 nm.

关 键 词：羟醛缩合 非线性光学(NLD) 溶致变色 

分 类 号：O621.36[理学—有机化学]