Janus NLO dendrimers with different peripheral functional groups: convenient synthesis and enhanced NLO performance with the aid of the Ar–Ar<sup>F</sup>self-assembly
作者:Guangchao Liu、Qiuyan Liao、Haiyu Deng、Wenjing Zhao、Pengyu Chen、Runli Tang、Qianqian Li、Zhen Li
DOI:10.1039/c9tc01724k
日期:——
In this work, three dendrimers with different peripheral functional groups were successfully prepared through a powerful “click chemistry” reaction. Thanks to their spherical topological structure, the NLO performance is superior to that of the corresponding conical dendrimers. Among them, Janus dendrimer J1 with phenyl and pentafluorophenyl groups at the periphery demonstrated the highest NLO effect
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。
Synthesis and characterization of dendronized hyperbranched polymers through the “A3+B2” approach
作者:Guangchao Liu、Pengyu Chen、Runli Tang、Zhen Li
DOI:10.1007/s11426-016-0250-5
日期:2016.12
Dendronized hyperbranchedpolymer (DHP) is a new kind of polymer, which combines the advantages of dendrimers and hyperbranchedpolymers. In this work, two dendronized hyperbranchedpolymers, DHPG0 and DHPG1, were successfully prepared through the simple “A3+B2” type Sonogashira coupling reaction. The nonlinear optical (NLO) effects of DHPG0 and DHPG1, characterized by the d 33 values, were 183 and
树枝化的超支化聚合物(DHP)是一种新型的聚合物,结合了树枝状聚合物和超支化聚合物的优点。在这项工作中,通过简单的“ A 3 + B 2 ”型Sonogashira偶联反应成功地制备了两种树枝状的超支化聚合物DHPG0和DHPG1。DHPG0和DHPG1的非线性光学(NLO)效应,其d 33值分别为183和220 pm V –1 得益于特殊的拓扑结构,它们分别比其树枝状聚合物和树枝状聚合物的类似物要高。另外,所得聚合物显示出优异的溶解性,良好的加工性和高的热稳定性。