Further Enhancement of the Second-Order Nonlinear Optical (NLO) Coefficient and the Stability of NLO Polymers that Contain Isolation Chromophore Moieties by Using the “Suitable Isolation Group” Concept and the Ar/Ar<sup>F</sup>Self-Assembly Effect
作者:Wenbo Wu、Cheng Ye、Jingui Qin、Zhen Li
DOI:10.1002/asia.201300010
日期:2013.8
series of second‐order NLO poly(arylene‐ethynylene)s, in which an isolation chromophore was introduced to enhance the NLO coefficients, were successfully designed and synthesized. Thanks to the isolation chromophore, these polymers demonstrated good NLO activities and optical transparency. To further improve the comprehensive performance of the polymers, different isolation groups of various sizes
首次成功设计并合成了一系列二阶NLO聚亚芳基亚乙炔基,其中引入了一个隔离发色团以提高NLO系数。由于分离了生色团,这些聚合物表现出良好的NLO活性和光学透明性。为了进一步改善聚合物的综合性能,根据“合适的隔离基团”的概念,引入了各种尺寸的不同隔离基团,以巧妙地修饰聚合物的结构。在该系列聚合物中,发现萘(Np)基团是“合适的隔离基团”,并且聚合物P3在这五种聚合物中显示出最高的d 33值(122.1 pm V -1)。有趣的是,聚合物含有五氟苯基环作为隔离基团的P5与仅含有普通苯环作为隔离基团的聚合物P2(97.2对62.5 pm V -1)相比,具有更高的NLO效果和稳定性。氩˚F在非线性光学领域自组装的效果。