Synthesis and Photophysical Properties of Pyrene-Based Light-Emitting Monomers: Highly Pure-Blue-Fluorescent, Cruciform-Shaped Architectures
作者:Jian-yong Hu、Masanao Era、Mark R. J. Elsegood、Takehiko Yamato
DOI:10.1002/ejoc.200900806
日期:2010.1
A new series of pyrene-based, pure-blue, fluorescent, stable monomers, namely 2,7-di-tert-butyl-4,5,9,10-tetrakis(p-R-phenylethynyl)pyrenes, have been successfully synthesised by Pd/Cu-catalysed Sonogashira coupling in excellent yield. The cruciform-shaped, π-conjugated structures were fully characterised by 1H/13C NMR and IR spectroscopy, mass spectrometry and elemental analysis. As revealed from
Pd成功合成了一系列新的芘基纯蓝色荧光稳定单体2,7-二叔丁基-4,5,9,10-四(pR-苯基乙炔基)芘/Cu 催化的 Sonogashira 偶联,产率极佳。通过 1H/13C NMR 和 IR 光谱、质谱和元素分析完全表征了十字形、π 共轭结构。单晶 X 射线分析表明,堆叠柱之间存在人字形图案,但由于引入了两个庞大的 tBu 基团,相邻芘单元的 π-π 堆叠距离并不是特别短,约为 5.82 A。芘环位于 2 位和 7 位。在不同的有机溶剂中仔细检查了这些单体的光物理性质,