两种Ni(Ⅱ)配合物的合成及三阶非线性光学性能  

Synthesis and Third-Order Optical Nonlinearities of Two Nickel(Ⅱ) Complexes

作　　者：蔡志彬[1] 周茂 

机构地区：[1]浙江工业大学精细化工研究所,杭州310014 [2]杭州赛利药物研究所,杭州310052

出　　处：《无机化学学报》2011年第12期2383-2388,共6页Chinese Journal of Inorganic Chemistry

基　　金：浙江省自然科学基金(No.Y4080370)资助项目

摘　　要：合成了两种新的Ni(Ⅱ)配合物,用UV、IR、MS和元素分析进行了表征。采用飞秒激光,运用简并四波混频法,研究了Ni(Ⅱ)配合物在非共振状态下的三阶非线性光学性能。它们的三阶非线性光学极化率χ(3)为3.21×10-13 esu和3.58×10-13 esu,非线性折射率n2为5.89×10-12 esu和6.58×10-12 esu,分子二阶超极化率γ为3.21×10-31 esu和3.57×10-31 esu,响应时间τ为54 fs和59 fs。探索了配合物的分子结构对三阶非线性光学性能的影响。结果表明具有大的高度离域的π电子共轭体系是获得较大三阶非线性光学性能的关键。Two new nickel（Ⅱ） complexes were synthesized and characterized by UV,IR,MS and elemental analysis.By using femtosecond laser,the off-resonant third-order optical nonlinearities of the complexes were measured with degenerate four-wave mixing technique.The third-order nonlinear optical susceptibilities χ（3） are 3.21×10-13 esu and 3.58×10-13 esu.The nonlinear refractive indexes n2 are 5.89×10-12 esu and 6.58×10-12 esu.The second-order hyperpolarizabilities γ of the molecules are 3.21×10-31 esu and 3.57×10-31esu.The response times τ are 54 fs and 59 fs.The influence of the molecular structure on the third-order optical nonlinearity was studied.The results show that large and highly delocalized π-conjugated electron system is the key factor leading to the strong third-order optical nonlinearity.

关 键 词：非线性光学 简并四波混频 Ni(Ⅱ)配合物 合成 

分 类 号：O641.4[理学—物理化学] O614.813[理学—化学]