1417438-56-2Relevant academic research and scientific papers
Using two simple methods of Ar-ArF self-assembly and isolation chromophores to further improve the comprehensive performance of NLO dendrimers
Wu, Wenbo,Yu, Gui,Liu, Yunqi,Ye, Cheng,Qin, Jingui,Li, Zhen
, p. 630 - 641 (2013)
Herein, through a combination of divergent and convergent approaches, coupled with the utilization of the powerful Sharpless "click chemistry" reaction, two series of high-generation nonlinear optical (NLO) dendrimers have been conveniently prepared in high purity and satisfactory yields. Perfluoroaromatic rings and isolation chromophores were introduced to further improve their comprehensive performance. Thanks to the effects of Ar-ArF self-assembly and the isolation chromophores, coupled with perfect 3D spatial isolation from the highly branched structure of the dendrimer, G5-PFPh-NS displayed very large NLO efficiency (up to 257 pm V -1), which is, to the best of our knowledge, the new record highest value reported so far for simple azo chromophore moieties. High-quality wide optical transparency and good stability were also achieved. Copyright
Janus NLO dendrimers with different peripheral functional groups: Convenient synthesis and enhanced NLO performance with the aid of the Ar-ArF self-assembly
Liu, Guangchao,Liao, Qiuyan,Deng, Haiyu,Zhao, Wenjing,Chen, Pengyu,Tang, Runli,Li, Qianqian,Li, Zhen
supporting information, p. 7344 - 7351 (2019/06/27)
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 of 118.0 pm V-1. Also, thanks to the Ar-ArF self-assembly effect, its optical transparency and thermal stability were also improved, with degradation temperatures higher than 260 °C.
