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Synthesis and characterization of the novel 4-(1-(pyridin-4-yl) ethoxyl) substituted bis(phthalocyaninato) rare earth complexes and investigation of their two-photon absorption-based third-order non-linear optical properties
Journal of Molecular Structure ( IF 4.0 ) Pub Date : 2021-08-30 , DOI: 10.1016/j.molstruc.2021.131389
Aleyna Çavuş 1 , Gülşen Görk 2 , Murat Erdem 2 , Metin Özer 1
Affiliation  

Novel 4-(1-(pyridin-4-yl) ethoxyl) substituted double-decker rare earth phthalocyanine complexes were synthesized starting from (R)-4-(1-(pyridin-4-yl) ethoxy) phthalonitrile with proper rare earth metal acetates in octanol catalyzed by 1,8-diazabicyclo[5.4.0]undec‑7-ene at 300 °C. The new starting phthalonitrile compound was obtained from (R)-1-(pyridin-4-yl) ethan-1-ol and 4-nitrophthalonitrile in acetonitrile at reflux temperature in the presence of potassium carbonate as a catalyst. The characterization of the synthesized and isolated compounds was performed by elemental analysis, infrared, ultraviolet-visible, proton and correlation spectroscopy nuclear magnetic resonance, and matrix-assisted laser desorption/ionization time-of-flight mass spectroscopic methods. Nonlinear optical responses of all complexes are investigated using the Z-scan method. The nonlinear absorption coefficient, two-photon absorption cross-section, and the imaginary part of the nonlinear susceptibility of complexes are calculated for each discrete concentration. All these nonlinear parameters of our rare-earth coordinated double-decker phthalocyanines present a decrement due to the aggregation under high optic powers, which result in sequential two-photon absorption for smaller ionic radii.



中文翻译:

新型 4-(1-(pyridin-4-yl) ethoxyl) 取代的双(酞菁)稀土配合物的合成和表征及其基于双光子吸收的三阶非线性光学性质的研究

以 (R)-4-(1-(pyridin-4-yl) ethoxy) 邻苯二甲腈为原料, 以适当的稀土为原料, 合成了新型 4-(1-(pyridin-4-yl) ethoxyl) 取代的双层稀土酞菁配合物在 300 °C 下由 1,8-二氮杂双环 [5.4.0] undec-7-ene 催化的辛醇中的金属乙酸盐。新的起始邻苯二甲腈化合物是由 (R)-1-(吡啶-4-基) 乙醇和 4-硝基邻苯二甲腈在乙腈中在回流温度下在碳酸钾作为催化剂存在下获得的。通过元素分析、红外、紫外-可见光、质子和相关光谱核磁共振以及基质辅助激光解吸/电离飞行时间质谱方法对合成和分离的化合物进行表征。使用 Z 扫描方法研究所有复合物的非线性光学响应。非线性吸收系数、双光子吸收截面和复合物非线性磁化率的虚部是针对每个离散浓度计算的。我们的稀土配位双层酞菁的所有这些非线性参数由于在高光功率下的聚集而呈现递减,这导致较小离子半径的连续双光子吸收。

更新日期:2021-09-08
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