A Series of Red‐Light‐Emitting Ionic Iridium Complexes: Structures, Excited State Properties, and Application in Electroluminescent Devices
作者:Shu‐Juan Liu、Qiang Zhao、Qu‐Li Fan、Wei Huang
DOI:10.1002/ejic.200701184
日期:2008.5
geometry. All complexes exhibited intense and long-lived emission at room temperature. The substituents on the 2,2′-bipyridine moieties influence the photophysical and electrochemical properties. The excited states were investigated through theoretical calculations together with photophysical and electrochemical properties. It was found that the excited state of the [Ir(piq)2(FbpyF)](PF6) complex can be assigned
制备了一系列离子二亚氨基铱配合物[Ir(piq-C∧N)2(LN∧N)](PF6),其中piq-C∧N为1-苯基异喹啉,LN∧N为双齿N-配位配体:2 ,2'-联吡啶 (bpy), 4,4'-二甲基-2,2'-联吡啶 (mbpym), 5,5'-双(噻吩-2-基)-2,2'-联吡啶 (tbpyt),和 5,5'-双(9,9-二辛基芴-2-基)-2,2'-联吡啶 (FbpyF)。[Ir(piq)2(mbpym)](PF6) 的 X 射线衍射研究表明,铱中心采用扭曲的八面体几何形状。所有配合物在室温下都表现出强烈和长寿命的发射。2,2'-联吡啶部分上的取代基影响光物理和电化学性质。通过理论计算以及光物理和电化学性质研究了激发态。发现[Ir(piq)2(FbpyF)](PF6)配合物的激发态可归于3LC(πN∧N→π*N∧N)、3MLCT、3LLCT(πC∧ N→π*N∧N) 和 3LC (πC