Terpyridine-fused polyaromatic hydrocarbons generated via cyclodehydrogenation and used as ligands in Ru(ii) complexes
作者:Angelika Graczyk、Frances A. Murphy、Deanne Nolan、Vanesa Fernández-Moreira、Natasha J. Lundin、Christopher M. Fitchett、Sylvia M. Draper
DOI:10.1039/c2dt30548h
日期:——
series of novel fused 4′-substituted 2,2′ : 6′,2′′-terpyridine ligands and their ruthenium(II) complexes were prepared. The unusual 4′-substituents comprised 2,3,4,5-pentaphenylbenzene and its tert-butyl derivative (1 and 2) and the products from oxidative cyclodehydrogenation, i.e. polyaromatic fragments consisting of ten or thirteen fused benzene rings (3 and 4). The syntheses of all the ligands are discussed
制备了一系列新颖的稠合的4'-取代的2,2':6',2''-吡啶吡啶配体及其钌(II)配合物。不常见的4'取代基包括2,3,4,5-五苯基苯及其叔丁基衍生物(1和2)和氧化环脱氢的产物,即由十个或十三个稠合苯环(3和4)组成的多芳族片段。。根据Scholl反应的要求和局限性,讨论了所有配体的合成。配体的光学性质以及1和2的单晶X射线结构,介绍。后者表明五苯基苯和特吡啶的附属物1和2是在固态垂直。尽管夹杂物的大有机生色在Ru的吸收和发射特性(II)双三联吡啶络合物(配体1,2和3)被认为是与那些的的[Ru(三联吡啶)2 ] 2+。它们在室温下不发光,但在77 K时发射,激发态寿命为11–12μs。