An efficient synthetic approach towards new 5,5’-diaryl-2,2’-bipyridine-based fluorophores
作者:Alexey P. Krinochkin、Dmitry S. Kopchuk、Nikolay V. Chepchugov、Grigory A. Kim、Igor S. Kovalev、Matiur Rahman、Grigory V. Zyryanov、Adinath Majee、Vladimir L. Rusinov、Oleg N. Chupakhin
DOI:10.1016/j.cclet.2016.12.043
日期:2017.5
Abstract An efficient approach has been developed for the synthesis of 5,5′-diaryl-2,2′-bipyridines via their 1,2,4-triazine analogues. The notable advantages of the present method are: The possibility of varying the aromatic substituents in the positions 5 and 5′ of bipyridine core and the possibility for obtaining 2,2′-bipyridines bearing a fused cyclopentene core to increase the solubility in organic
摘要已经开发出一种有效的方法,可以通过其1,2,4-三嗪类似物合成5,5'-二芳基-2,2'-联吡啶。本方法的显着优点是:改变联吡啶核的5和5'位上的芳族取代基的可能性,以及获得带有稠合的环戊烯核的2,2'-联吡啶以增加在有机溶剂中的溶解度的可能性。这些5,5'-二芳基-2,2'-联吡啶在约200nm的范围内表现出强烈的发射。在乙腈溶液中为422–521 nm;取决于芳族取代基的性质和环状环戊烯片段的存在。除此之外,与许多先前描述的类似结构相比,观察到吸收和发射最大值的显着的红移。