Ionic luminescent cyclometalated Ir(III) complexes with polypyridine co-ligands
作者:Francesco Neve、Massimo La Deda、Fausto Puntoriero、Sebastiano Campagna
DOI:10.1016/j.ica.2005.12.064
日期:2006.3
Two novel ligands containing a functionalized N boolean AND N chelating moiety (pbpy-OBut and tpy-COOH, respectively) were treated with [1r(ppy)(2)(mu-Cl)](2) (ppy = 2-(2-pyridyl)phenyl), leading to the cationic cyclornetalated complexes [1r(ppy)(2)(pbpy-OBut)(+) (2) (pbpyOBut = 4-(4'-(4-phenyloxy)-6'-phenyl-2,2'-bipyridyl}butene) and [1r(ppy)(2)(tpy-COOH)](+) (3) (tpy-COOH=4'-(4-carboxyphellyl)2,2':6',2"-terpyridine). Complexes 2 and 3 exhibit intense room temperature luminescence both in solution and as solid films. Assignment of the emissive behavior to a (LLCT)-L-3 (ppy-to-N boolean AND N) excited state is proposed. (c) 2006 Elsevier B.V. All rights reserved.