Tris-Cyclometalated Iridium(III) Complexes of Carbazole(fluorenyl)pyridine Ligands: Synthesis, Redox and Photophysical Properties, and Electrophosphorescent Light-Emitting Diodes
作者:Sylvia Bettington、Mustafa Tavasli、Martin R. Bryce、Andrew Beeby、Hameed Al-Attar、Andrew P. Monkman
DOI:10.1002/chem.200600888
日期:2007.2.2
electrochemical quasi-reversibility, for example, for 2 f E m ox}hfill atop m pa}hfill}}} =0.45 (1e), 0.95 (3e), 1.24 V (3e). Striking differences are seen in the solution-state photophysical data between complexes [Ir(Cz-2-Py)(3)] (1 d) and [Ir(Cz-3-Py)(3)] (2 d), in which the Cz moiety is bonded directly to the metal center: for the latter there is an 85 nm blue-shift in emission, a decrease
使用铃木交叉偶联方法合成的配体,获得了新的磷光均三环金属化配合物,即fac- [Ir(Cz-2-Fl(n)Py)(3)](1 df)和fac- [Ir (Cz-3-Fl(n)Py)(3)](2 df),它们是溶液可处理的三重态发射体(Cz表示N-己基咔唑,n是9,9'-二己基芴(F1)单元的数目( n = 1,1,2),且Py为吡啶)。在所有情况下,Py和F1分别在2-和2,7-位被取代,并且Cz部分分别在序列1和2的2-或3-位被Py或F1取代。通过循环伏安法(E m ox} hfill 1 / 2hfill}}}} = 0.14 V研究的1 d氧化电位较小,而Ag / AgNO(3),CH(2)Cl(2)与异构体2 d(E m ox} hfill on 1 / 2hfill}}} = 0.30 V相比,为正值(即提高的HOMO水平),那里的Cz氮是Ir中心的间位原子 以