D-π-A chromophores with a quinoxaline core in the π-bridge and bulky aryl groups in the acceptor: Synthesis, properties, and femtosecond nonlinear optical activity of the chromophore/PMMA guest-host materials
作者:Alexey A. Kalinin、Liliya N. Islamova、Artemiy G. Shmelev、Guzel M. Fazleeva、Olga D. Fominykh、Yulia B. Dudkina、Tatyana A. Vakhonina、Alina I. Levitskaya、Anastasiya V. Sharipova、Anvar S. Mukhtarov、Ayrat R. Khamatgalimov、Irek R. Nizameev、Yulia H. Budnikova、Marina Yu Balakina
DOI:10.1016/j.dyepig.2020.108801
日期:2021.1
content. Femtosecond nonlinear optical (NLO) activity was studied for poled thin guest-host polymer films with various chromophore weight content. Film DBA-VQPhV-TCFPhCy(25 wt%)/PMMA with bulky cyclohexylphenyl groups in chromophore acceptor shows maximal NLO coefficient, d33, values among the studied materials (37 pm/V) as well as good long-term stability of NLO response together with excellent chromophore
合成了新型D-π-A发色团,其在π-共轭桥中具有喹喔啉/喹喔啉酮核心,并且在受体部分具有多个庞大的基团,并通过紫外-可见光谱,DFT计算,电化学和TGA-DSC方法在分子水平上进行了系统的研究。以及在材料级别,例如使用分子建模和SHG技术掺杂不同发色团含量的PMMA基复合聚合物材料。发色团表现出约二恶烷/氯仿溶剂变色正迁移。50 nm,第一次超极化率和偶极矩值高,能隙小,热稳定性好。与苯基不同,甲苯基和环己基苯基取代基可被视为最有效的分离基团,即使在30 wt%的含量下也可防止生色团明显聚集。飞秒非线性光学(NLO)活性研究了不同发色团重量含量的极化薄客体-主体聚合物薄膜。电影DBA-VQ Ph V-TCF PhCy(25 wt%)/在发色团受体中带有大体积环己基苯基的PMMA显示出最大的NLO系数d 3 3 ,在所研究材料中的值(37 pm / V)以及良好的长期稳定性NLO响应以及出色的生色团热稳定性(T