Tuning the strength of intramolecular charge-transfer of triene-based nonlinear optical dyes for electro-optics and optofluidic lasers
作者:Jieyun Wu、Wen Wang、Chaoyang Gong、Qing Li、Zhonghui Li、Guowei Deng、Xiaoling Zhang、Kaixin Chen、Yuan Gong、Kin seng Chiang
DOI:10.1039/c7tc00958e
日期:——
obtained. In electro-optic (EO) activities, four dyes in guest–host EO films showed the step-up EO coefficients from dye 1 (3 pm V−1) to dye 4 (76 pm V−1). This trend was in accordance with the results of ICT energy gap and DFT calculations, and it showed the effective tuning of structure–property relationship for electro-optics. The facile synthesis of NLO dyes, fine-tuning of their intramolecular charge-transfer
由于有机共轭染料在非线性光学,发光和荧光传感器中的广泛应用,因此受到了广泛的关注。在本文中,我们报告了具有三烯共轭桥的供体-受体染料的两步合成。通过Vilsmeier甲酰化和Knoevenagel缩合,成功合成了具有不同吸电子部分的染料1-4,并在短时间内获得了高收率。光物理性质显示从染料1到染料4的分子内电荷转移(ICT)强度逐渐增强以及多种吸收和荧光特性。这种结构特性调整确保了它们在光流体激光器和非线性光学中的不同应用。另外,对使用甲苯中的染料1作为增益材料得到的光流体激光器进行了说明。光学流控激光(峰波长:610纳米)的窄线宽(1.6纳米),用94.2毫米μJ阈-2得到。在电光(EO)活动中,客体-宿主EO膜中的四种染料显示出从1号染料(3 pm V -1)到4号染料(76 pm V -1)的递增EO系数。)。这种趋势与ICT的能隙和DFT计算结果一致,并且表明了电光的结构-特性关系