PDF(Pubmed)
Abstract：
A novel tridentate ligand featuring an acridine core and pyrazole rings, namely 2,7- di-tert-butyl-4,5-di(pyrazol-1-yl)acridine, L, was designed and used to create two ruthenium(II) complexes: [RuL2](PF6)2 and [Ru(tpy)L](PF6)2. Surprisingly, the ligand adopted different coordination modes in the complexes: facial coordination for the homoleptic complex and meridional coordination for the heteroleptic complex. The electronic absorption and electrochemical properties were evaluated. Although both complexes exhibited favorable electronic properties for luminescence, neither emitted light at room temperature nor at 77 K. This study highlights the complex interplay between ligand design, coordination mode, and luminescence in ruthenium(II) complexes.
摘要：
一种新型三齿配体，具有吖啶核和吡唑环，即2,7-二叔丁基-4,5-二(吡唑-1-基)吖啶，L,设计并用于制造两种钌(II)配合物：[RuL2](PF6)2和[Ru(tpy)L](PF6)2。令人惊讶的是,配体在复合物中采用不同的配位模式：同构复合物的面部配位和异构复合物的子午位配位。评估了电子吸收和电化学性能。尽管两种配合物都表现出良好的发光电子特性，既不在室温下发光，也不在77K下发光。这项研究强调了配体设计之间的复杂相互作用，协调模式,和钌（II）配合物中的发光。
