The synthesis,characterization and electroluminescent properties of zinc(II) complexes for single-layer organic light-emitting diodes |
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| Authors: | He-Ping Zeng Guang-Rong Wang Gong-Chang Zeng Jing Li |
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| Affiliation: | 1. College of Chemistry, South China University of Technology, Guangzhou 510006, PR China;2. Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854, USA;3. Department of Chemistry, McMaster University, 1280 Main St. W., Hamilton, ON L8S 4M1, Canada;1. Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, School of Life Science, South China Normal University, Guangzhou 510631, Guangdong, China;2. Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;3. College of Chemical Engineering, Huaqiao University, Xiamen, 361021, Fujian, China;1. Faculty of Chemistry, University of Wroclaw, Joliot-Curie 14, 50-383 Wroclaw, Poland;2. Universidade do Minho, Centro de Fisica, Campus de Gualtar, 4710-057 Braga, Portugal;3. Universidade d Minho, Centro de Fisica, Campus de Gualtar, 4710-057 Braga, Portugal;4. Department of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland |
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| Abstract: | (E)-2-(2-(9-p-tolyl-9H-carbazol-3-yl)vinyl)-8-hydroxyl-quinoline, (E)-2-(2-(9-(4-methoxyphenyl)-9H-carbazol-3-yl)vinyl)-8-hydroxyquinoline and their respective zinc(II) complexes were synthesized and their structures confirmed using UV–vis, FT-IR, ESI-MS, FAB-MS, 1H NMR and elemental analysis. The two Zn(II) complexes displayed high thermal stability with thermal decomposition temperatures of 422 °C and 410 °C, respectively. Photoluminescence spectra revealed that the complexes possessed maximum emissions at 575 and 570 nm, respectively, in the green region. Single-layer, organic light-emitting diodes built using these complexes emitted yellow light, as a result of a red-shift, with maximum luminances of 489 cd/m2 and 402 cd/m2 as well as luminance efficiencies of 0.41 cd A?1 and 1.81 cd A?1, respectively. |
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