Using low generation dendrimers as monomers to construct dendronized hyperbranched polymers with high nonlinear optical performance
作者:Wenbo Wu、Zhen Xu、Zhen Li
DOI:10.1039/c4tc01396d
日期:——
By combining the structure of hyperbranched polymer and dendrimer, two second-order nonlinear optical (NLO) dendronized hyperbranched polymers, PG1 and PG2, were prepared with satisfactory yields through the Suzuki coupling reaction using low generation dendrimers as the monomers. Due to their highly branched structure, both of them have good solubility and processability. These two polymers inherited the advantages of hyperbranched polymers (good stability) and dendrimers (large NLO coefficient) simultaneously, especially for PG1. Its NLO coefficient d33 value and d33(∞) value were as high as 166 and 27 pm V−1, respectively, and no obvious decay was observed in its d33 value when its thin film was heated to 117 °C.
FTC-containing molecules: large second-order nonlinear optical performance and excellent thermal stability, and the key development of the “Isolation Chromophore” concept
作者:Pengyu Chen、Xiuyang Yin、Yujun Xie、Shufang Li、Shiyu Luo、Huiyi Zeng、Guocong Guo、Qianqian Li、Zhen Li
DOI:10.1039/c6tc04282a
日期:——
series of second-ordernonlinearoptical (NLO) molecules, M1–M5, were designed and successfully synthesized through the convenient ‘‘click chemistry’’ reaction, which contain two different types of chromophoremoieties, the FTC chromophore and nitro-based azo ones, according to the concept of “IsolationChromophore”. All these five molecules possess excellent thermal stability and very large NLO performance
设计了一系列二阶非线性光学分子(M1-M5),并通过方便的“点击化学”反应成功合成了该分子,其中包含两种不同类型的生色团部分:FTC生色团和基于硝基的偶氮根据“分离发色团”的概念。所有这五个分子均具有出色的热稳定性和非常大的NLO性能,在M1达到的1950 nm波长处具有384 pm V -1的d 33值超高值,进一步促进了优良NLO材料的合理设计。
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
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。
New Hyperbranched Polytriazoles Containing Isolation Chromophore Moieties Derived from AB4 Monomers through Click Chemistry under Copper(I) Catalysis: Improved Optical Transparency and Enhanced NLO Effects
作者:Wenbo Wu、Cheng Ye、Gui Yu、Yunqi Liu、Jingui Qin、Zhen Li
DOI:10.1002/chem.201102872
日期:2012.4.2
containing isolationchromophores were synthesized successfully through click chemistry reactions under copper(I) catalysis. For the first time, these two polymers were derived from an AB4‐type monomer, although they contain different end‐capping chromophores. They are soluble in normal polar organic solvents and are well characterized. Thanks to the presence of the isolationchromophore, the two polymers