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 isolationchromophore was introduced to enhance the NLO coefficients, were successfully designed and synthesized. Thanks to the isolationchromophore, these polymers demonstrated good NLO activities and opticaltransparency. 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。
Second-order nonlinear optical (NLO) polymers containing perfluoroaromatic rings as isolation groups with Ar/ArF self-assembly effect: Enhanced NLO coefficient and stability
作者:Wenbo Wu、Qi Huang、Cheng Zhong、Cheng Ye、Jingui Qin、Zhen Li
DOI:10.1016/j.polymer.2013.07.073
日期:2013.10
perfluoroaromatic isolation groups, were successfully prepared, via the palladium-catalyzed Sonogashira coupling reaction. Among them, P2, due to the presence of the self-assembly effect between the perfluoroaromatic and chromophore moieties, demonstrated much larger NLOeffect (d33 value of 162.3 pm/V) and better stability with onset temperature for decay (111 °C). The research on the polymer conformation
New hyperbranched second-order nonlinear optical poly(arylene-ethynylene)s containing pentafluoroaromatic rings as isolation group: Facile synthesis and enhanced optical nonlinearity through Ar-Ar<sup>F</sup>
self-assembly effect
作者:Wenbo Wu、Zhichao Zhu、Guofu Qiu、Cheng Ye、Jingui Qin、Zhen Li
DOI:10.1002/pola.26345
日期:2012.12.15
article, a facile route was designed to prepare four newhyperbranchedpoly(arylene‐ethynylene)scontaining azo‐chromophore moieties through one‐pot “A2+B3” approach via simple Sonogashira coupling reaction. The polymers were all soluble in organic solvents and demonstrated good nonlinearoptical (NLO) properties, because of the three‐dimensional spatial isolationeffect of these hyperbranched polymers