CAJ | 학술논문

以苯基为中心，通过 Suzuki 偶联反应引入两个电子给体（D）单元三苯胺和电子受体（A）单元菲并咪唑，合成了新的 D-π-A 星型分子（Y），其结构通过 NMR、ESI-MS 及元素分析进行了表征；通过紫外可见吸收光谱、荧光光谱、荧光量子产率、理论计算以及 Z 扫描测试技术对该分子的三阶非线性光学性质进行了研究。结果表明，分子Y的荧光量子产率(?)可达0.77，双光子吸收截面(σ2)为120GM，三阶非线性折射率（n2）为9.0×10?7cm2/GW，可见该化合物具有较好的非线性光学性质，为非线性光学材料的分子设计提供了一定的思路。
이분기위중심，통과 Suzuki 우련반응인입량개전자급체（D）단원삼분알화전자수체（A）단원비병미서，합성료신적 D-π-A 성형분자（Y），기결구통과 NMR、ESI-MS 급원소분석진행료표정；통과자외가견흡수광보、형광광보、형광양자산솔、이론계산이급 Z 소묘측시기술대해분자적삼계비선성광학성질진행료연구。결과표명，분자Y적형광양자산솔(?)가체0.77，쌍광자흡수절면(σ2)위120GM，삼계비선성절사솔（n2）위9.0×10?7cm2/GW，가견해화합물구유교호적비선성광학성질，위비선성광학재료적분자설계제공료일정적사로。
With phenyl as the center,a new D-π-A star-shaped molecule (Y) was designed and synthesized by introducing two electron-donors,(D) unit triphenylamine and electron-accepting (A) unit phenanthroimidazole with Suzuki coupling,and its structure has been characterized by NMR, ESI-MS and elemental analysis. The third order nonlinear optical properties of the compound Y has been studied systematically through UV-Vis absorption spectroscopy,fluorescence spectroscopy,the fluorescence quantum yield,theoretical calculation and Z-scan technology. The results showed that the fluorescence quantum yield (?) is up to 0.77,the two-photon absorption cross section (σ2) is 120GM, and the third order nonlinear refractive index (n2) is 9.0×10?7cm2/GW,which provides a new idea for the design of molecular with good nonlinear optical properties.