萘酞菁镍化合物的合成、非线性及光限幅特性  

Synthesis,Nonlinear Optical Properties and Optical Limiting Effect of Naphthalocyaninanickel Complex

作　　者：何兴权[1] 刘大军[1] 周奋国[1] 高正国[1] 段潜[1] 

机构地区：[1]长春理工大学化学与环境工程学院,长春130022

出　　处：《吉林大学学报（理学版）》2009年第4期832-836,共5页Journal of Jilin University:Science Edition

基　　金：吉林省自然科学基金(批准号:20070508)

摘　　要：以1,8-二氮杂双环[5.4.0]十一碳烯-7(DBU)为催化剂采用液相法合成了四叔丁基-2,3-萘酞菁镍(TBNPcNi).应用调Q倍频(ns/ps)Nd∶YAG脉冲激光系统,在532 nm波长下,研究了化合物的非线性和光限幅特性.在高斯单位制(esu)下测得化合物的非线性折射率n2和三阶非线性极化率χ(3)分别为2.07×10-11和7.57×10-12,分子极化率γ′为2.96×10-29,显著高于金属酞菁分子.化合物具有优异的非线性光限幅特性,当线性透过率为72%时,限幅阈值为1722 mJ/cm2,箝位值为700 mJ/cm2,有效激发态与基态吸收截面比为4.48.With 1,8-diazabicyclo [5.4.0] -undec-7-ene （DBU） as catalyst, tetra-tert-butyl-2,3-naphthalocya- ninanickel （TBNPcNi） was synthesized by means of liquid synthesis method. A frequency-doubled Q switched Nd ： YAG laser system with ns/ps laser pulse was used for studying nonlinear and optical limiting properties of the synthesized compound at a wavelength of 532 nm. The nonlinear refracting index, n2 and third-order nonlinear polarizability, X（3〉 were 2.07×10^-11 and 7.57×10^-12, respectively, which are obviously higher than the values of metallic phthalocyanine. The compound shows excellent nonlinear optical limiting perform- ance. When the visible light transmittance is 72%, the limiting threshold value is 1722 mJ/cm^2, the clamp value is 700 mJ/cm^2, the ratio of absorption sectional areas of effective excited state and ground state is 4.48.

关 键 词：三阶非线性 光限幅 萘酞菁 

分 类 号：O657[理学—分析化学]