Synthesis, Crystal Structure and Luminescence Properties of a Cyclometalated Ir(III) Complex of 3,4-Diphenylcinnoline
Bi-Hai Tonga, Fang-Hui Wub, Qun-Bo Meic, and Qian-Feng Zhangb
aInstitute of Molecular Engineering and Applied Chemistry, College of Metallurgy and Resources, Anhui University of Technology, Ma’anshan, Anhui 243002, P. R. China
bInstitute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, Anhui 243002, P. R. China
cJiangsu Key Lab of Organic Electronics & Information Displays, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications (NUPT), Nanjing 210046, P. R. China Reprint requests to Dr. Bi-Hai Tong. Fax: +86-555-2312041. E-mail: tongbihai@ahut.edu.cn Z. Naturforsch.2010,65b,511 – 515; received November 26, 2009 / revised February 1, 2010
An iridium(III) complex, [(dpci–H)2Ir(dafo)](PF6) (dpci–H = deprotonated 3,4-diphenylcinnoline, dpci; dafo = 4,5-diazafluoren-9-one), was synthesized fromthe reaction of the iridiumcomplex [Ir(dpci–H)2(Cl)]2and dafo in methanol, and characterized by single-crystal X-ray diffraction along with FT-IR, UV/Vis,1H NMR and mass spectroscopy. The luminescence properties and the decay of the cyclometalated iridium(III) complex were also investigated. Excitation at the absorption wave- length (469 nm) resulted in a strong emission band centered at 591 nm with a lifetime of 0.9µs.
Key words:Iridium(III) Complex, 3-Phenylcinnoline, Crystal Structure, Photoluminescence
