Synthesis and Photophysical Properties of Chalcophenes-Embedded Cycloparaphenylenes
作者:Hongyan Zhao、Ying-Chao Ma、Lei Cao、Shiqing Huang、Jian-Ping Zhang、Xiaoyu Yan
DOI:10.1021/acs.joc.9b00207
日期:2019.5.3
cyclooligomerization of 2,5-bis(4-pinacolboryl-phenyl)chalcophenes. The X-ray crystallographic analysis of [4]CP2S showed that it employed a cone-shaped conformation in the solid state. Furthermore, their photophysical properties were investigated by using the UV–vis absorption spectra and fluorescence spectra. In particular, selenophene and 3,4-ethylenedioxythiophene-embedded cycloparaphenylenes, which showed significant
[ n ]环-4,4'-联苯-2“,5”-亚噻吩基([ n ] CP 2 T,n = 3,4),[ n ]环-4,4'-联苯-2' ,5″-亚硒基([ n ] CP 2 S,n= 3、4)和[ n ]环-4,4′-联亚苯基-2″,5″-亚乙基二氧亚噻吩基([ n ] CP 2 E,n= 3)分几步合成,总收率高。这些纳米环是通过铂介导的2,5-双(4-频哪溴硼基-苯基)酚的环寡聚反应制备的。[4] CP 2的X射线晶体学分析S表明其在固态下采用锥形构象。此外,使用紫外可见吸收光谱和荧光光谱研究了它们的光物理性质。特别是,这里首次报道了硒烯和3,4-亚乙基二氧噻吩嵌入的环对亚苯基,与噻吩类似物相比,在紫外可见吸收和荧光光谱中显示出明显的红移。