在这项工作中,通过强大的“点击化学”反应成功制备了具有不同外围官能团的三种树枝状大分子。由于其球形拓扑结构,NLO性能优于相应的圆锥形树状聚合物。其中,在外围具有苯基和五氟苯基的Janus树状大分子J1表现出最高的NLO效果,为118.0 pm V -1。另外,由于Ar–Ar F的自组装效应,其光学透明度和热稳定性也得到了改善,降解温度高于260°C。
Using Two Simple Methods of ArAr<sup>F</sup>Self-Assembly and Isolation Chromophores to Further Improve the Comprehensive Performance of NLO Dendrimers
作者:Wenbo Wu、Gui Yu、Yunqi Liu、Cheng Ye、Jingui Qin、Zhen Li
DOI:10.1002/chem.201202992
日期:2013.1.7
series of high‐generation nonlinearoptical (NLO) dendrimers have been conveniently prepared in high purity and satisfactory yields. Perfluoroaromatic rings and isolation chromophores were introduced to further improve their comprehensiveperformance. Thanks to the effects of ArArF self‐assembly and the isolation chromophores, coupled with perfect 3D spatial isolation from the highly branched structure