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A New Phosphorescent Cyclometalated Iridium(III) Complex for the Selective Detection of Silver(I) Ion |
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| Authors: | Bihai Tong Jia-Yan Qiang Ya-Qing Xu Qunbo Mei Qun Chen Wa-Hung Leung Qian-Feng Zhang |
| Institution: | 1. Institute of Molecular Engineering and Applied Chemistry, College of Metallurgy and Resources, Anhui University of Technology, Ma??anshan, Anhui, 243002, P.R. China 2. Jiangsu Key Lab of Organic Electronics & Information Displays, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications (NUPT), Nanjing, 210046, P.R. China 3. Department of Applied Chemistry, School of Petrochemical Engineering, Changzhou University, Jiangsu, 213164, P.R. China 4. Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P.R. China |
| Abstract: | A new cyclometalated iridium(III) complex, Ir(ppz)2(dtp) (Ir1) (ppzH = 4-phenylphthalazinone, dtp = diethyl dithiophosphate), has been synthesized and characterized by single-crystal X-ray diffraction. The photoluminescence spectrum of Ir1 shows an emission maximum at 597 nm and its quantum yield is ca. 0.072. Complex Ir1 exhibits a strong and fast decrease of emission upon addition of Ag+ in aqueous media. The ratio of Ir1 responding to Ag+ was determined to be 1:1 by UV?CVis absorption and phosphorescent emission measurements. Complex Ir1 is a highly selective chemosensor for Ag+ over other transition metal ions. |
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