CAJ | 학술논문

设计合成了3个新的含2-芳基-1H-咪唑并[4,5-f][1,10]菲咯啉的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（3.99～4.36）×10-13esu,非线性折射率n2为（7.33～8.03）×10-12esu,分子二阶超极化率γ为（3.98～4.37）×10-31esu,响应时间τ为50～86fs。探索了配合物的分子结构对三阶非线性光学性能的影响。结果表明扩展π电子共轭体系,增强非平面分子内电荷转移等因素有利于获得较大的三阶光学非线性。
설계합성료3개신적함2-방기-1H-미서병[4,5-f][1,10]비각람적Ni（Ⅱ）배합물,용UV、IR、MS화원소분석진행료표정。채용비초격광,운용간병사파혼빈법,연구료Ni（Ⅱ）배합물재비공진상태하적삼계비선성광학성능。타문적삼계비선성광학겁화솔χ（3）위（3.99～4.36）×10-13esu,비선성절사솔n2위（7.33～8.03）×10-12esu,분자이계초겁화솔γ위（3.98～4.37）×10-31esu,향응시간τ위50～86fs。탐색료배합물적분자결구대삼계비선성광학성능적영향。결과표명확전π전자공액체계,증강비평면분자내전하전이등인소유리우획득교대적삼계광학비선성。
Three new nickel（ Ⅱ ） complexes containing 2-aryl-lH-imidazo [4,5-f] [1,10]phenanthroline were de- signed and synthesized. Their structures were confirmed 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. 99-4. 36）χ 10^-3 esu. The nonlinear refractive index n2 are （7.33-8.03） χ 10-12esu. The second-order hyperpolarizahilities }. of the molecules are （3.98-4. 37） χ 10^-31 esu. The response times r are 50-86fs. The influence of the molecular structure on the third-order optical nonlinearity was studied. The factors such as extended n-conjugated electron system, strong nonplanar intramolecular charge transfer lead to the high third-order optical nonlinearity.