Department of Chemistry, Hubei Key Laboratory on Organic and Polymeric Opto-Electronic Materials, Wuhan University, Wuhan 430072, PR China.
Chemistry. 2013 Jan 7;19(2):630-41. doi: 10.1002/chem.201202992. Epub 2012 Nov 23.
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-Ar(F) 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.
在此，通过发散和收敛方法的结合，并利用强大的 Sharpless“点击化学”反应，我们方便地制备了两系列高代非线性光学（NLO）树枝状聚合物，具有高纯度和令人满意的产率。引入全氟芳环和隔离发色团进一步提高了它们的综合性能。得益于 Ar-Ar(F) 自组装和隔离发色团的影响，再加上树枝状聚合物高度支化结构的完美 3D 空间隔离，G5-PFPh-NS 表现出非常高的 NLO 效率（高达 257 pm V(-1)），据我们所知，这是迄今为止简单偶氮发色团单元报道的新的最高值。还实现了高质量的宽光学透明度和良好的稳定性。
