New Coumarin-benzoxazole derivatives: Synthesis, photophysical and NLO properties
作者:Jian Sun、Mingming Zheng、Jianhong Jia、Wenbiao Wang、Yanhong Cui、Jianrong Gao
DOI:10.1016/j.dyepig.2019.01.010
日期:2019.5
In this work, a series of novel D-π-A structure coumarin-benzoxazole derivatives have been synthesized. The third-order NLO properties of the coumarin derivatives in DMSO are investigated by Z-scan measurement, and the photophysical properties of the compounds are studied through experimental and theoretical calculation methods. The results showed that the introducing specific functional groups at
在这项工作中,合成了一系列新颖的D - π -A结构香豆素-苯并恶唑衍生物。通过Z扫描测量研究了香豆素衍生物在DMSO中的三阶NLO性质,并通过实验和理论计算方法研究了该化合物的光物理性质。结果表明,在香豆素的多个活性位点引入特定的官能团减少了π - π分子间的堆积,而推挽结构的形成降低了整个分子的E-间隙。基于发色团4c且具有最大非线性吸收系数的出色的三阶NLO响应为50.64×10-13 esu和最大的二阶NLO超极化率是7.12×10 -30 esu。通过DFT,TDDFT和ZINDO计算也证实了实验结果。我们的结果表明,香豆素荧光染料是用于NLO应用的有前途的候选材料。