The design of nonlinear optical chromophores exhibiting large electro-optic activity and high thermal stability: The role of donor groups
The design of nonlinear optical chromophores exhibiting large electro-optic activity and high thermal stability: The role of donor groups
复制标题
具有大电光活性和高热稳定性的非线性光学发色团的设计：供体基团的作用
DOI：
10.1016/j.dyepig.2016.03.003
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发表时间：
2016-07-01
影响因子：
4.5
通讯作者：
Qiu, Ling
中科院分区：
文献类型：
--
作者：
Liu, Fenggang;Xiao, Hongyan;Qiu, Ling
合成了一种基于N-（4-二丁氨基苯基）四氢喹啉类给体基团的新型生色团，并与传统的基于二乙氨基苯基或三芳氨基苯基的生色团进行了比较。循环伏安法测量表明，新的发色团具有比结构相关的发色团小得多的能隙。密度泛函理论计算表明，分子的二次超极化率（μ β）的四氢喹啉基发色团的值是65%和110%以上的二乙氨基苯基或三芳氨基苯基发色团，分别。含有四氢喹啉基发色团的掺杂膜在25wt%的浓度下显示出126 pm/V的r（33）值，这比二乙氨基苯基衍生的发色团的电光活性（39 pm/V）高得多，并且比传统的三芳基氨基苯基发色团的电光活性（19 pm/V）高六倍。四氢喹啉基发色团具有比常用的烷基发色团高得多的热稳定性（其起始分解温度高于280 ℃）。(C)2016爱思唯尔有限公司版权所有
A novel chromophore based on N-(4-dibutylaminophenyl)tetrahydroquinolinyl donor group was synthesized to compare with traditional chromophores based on either diethylaminophenyl or triarylaminophenyl donor groups. Cyclic voltammetry measurements showed that the new chromophore had a much smaller energy gap than the structurally related chromophores. Density functional theory calculations suggested that the molecular quadratic hyperpolarizability (mu beta) value of tetrahydroquinolinyl chromophore is 65% and 110% larger than that of either the diethylaminophenyl or triarylaminophenyl chromophores, respectively. The doped film containing the tetrahydroquinolinyl chromophore showed an r(33) value of 126 pm/V at the concentration of 25 wt% which is much higher than the electro-optic activity of the diethylaminophenyl derived chromophore (39 pm/V) and six times higher than that of the traditional triarylaminophenyl chromophore (19 pm/V). The tetrahydroquinolinyl chromophore possesses much higher thermal stability (with its onset decomposition temperature above 280 degrees C) than those of commonly used alkyl chromophores. (C) 2016 Elsevier Ltd. All rights reserved.