2,2′-Biquinolines as test pilots for tuning the colour emission of luminescent mesomorphic silver(i) complexes
作者:Daniela Pucci、Alessandra Crispini、Mauro Ghedini、Elisabeta I. Szerb、Massimo La Deda
DOI:10.1039/c0dt01842b
日期:——
of a series of 2,2′-biquinolines differently substituted in the 4,4′-position and their corresponding silver(I) derivatives obtained through reaction with silver triflate in a 1 : 1 stoichiometric ratio are reported. In order to perform a systematic investigation on the role played by the substituents on the coordination to the silver(I) centre, structural studies through single crystal X-ray diffraction
一系列在4,4'-位不同取代的2,2'-联喹啉的合成与表征及其与之反应制得的相应银(I)衍生物三氟甲磺酸银报道了化学计量比为1:1。为了对取代基在与银(I)中心的配位中所起的作用进行系统的研究,已经对两种Ag(I)模型配合物进行了单晶X射线衍射的结构研究。不像他们的类似2,2'-联吡啶现已发现,无论是取代基还是取代基,联喹啉仅对银(I)离子起螯合配体的作用。Ag(I)的配位球由溶剂分子填充,并且取决于有机配体上取代基的存在和性质,由来自配位三氟甲磺酸酯或对称相关分子的羧基的氧原子填充,产生中性或离子性物质。对于最高的Ag(我)三氟甲磺酸酯的同系物长且柔软的外围尾部的存在使得有可能实现具有柱状组织,其高次是液晶性由于大和刚性芯。此外,金属配位会在所有Ag(I)物种在溶液态和浓缩态都具有令人感兴趣的发射特性,根据联喹啉单元上取代基的性质,会产生蓝色或绿色发射体。