title: Synthesis, crystal structure and photoluminescence of a cyclometalated Iridium(III) coumarin complex.
abstract: In this paper a new cyclometalated iridium(III) coumarin complex, Ir(III)bis(3-(2-benzothiazolyl)coumarinato N,C(4))(acetylacetonate) (Ir(L)2(acac)), was synthesized and characterized. X-ray crystallography demonstrated that the iridium(III) ion is hexacoordinated by two C atoms and two N atoms from 3-(2-benzothiazolyl)coumarinato ligands and two O atoms from acac ligand, displaying distorted octahedral coordination geometry. The Ir(L)2(acac) complex has good thermal stability with less than 2 % weight-reduction occurring at 300 °C, and exhibits strong reddish orange emission. The results shown that Ir(L)2(acac) is useful for fabrication organic light-emitting diodes.
authors.affiliation: Key Laboratory of Opto-Electronic Technology and Intelligent Control, Ministry of Education, Lanzhou Jiaotong University, Lanzhou, 730070, China, yutianzhi@hotmail.com.
authors.forename: Tianzhi
authors.initials: T
authors.lastname: Yu
authors.forename: Chengcheng
authors.initials: C
authors.lastname: Zhang
authors.forename: Yuling
authors.initials: Y
authors.lastname: Zhao
authors.forename: ShaoQiang
authors.initials: S
authors.lastname: Guo
authors.forename: Peng
authors.initials: P
authors.lastname: Liu
authors.forename: Wentao
authors.initials: W
authors.lastname: Li
authors.forename: Duowang
authors.initials: D
authors.lastname: Fan