Syntheses Of Red Phosphorescent Quinoline-Platinum (â…¡) Complexes & Blue And Green Phosphorescent Polymetallic Complexes

Organic light-emitting diodes (OLEDs) are promising in the third generation displays due to their potential advantages in easy fabrication, bright emission, low driving voltage, a wider viewing angle, cost-effective, flexibility. OLEDs is known as the next generation flat panel displays what to replace LCD in the futrue.In this paper, red phosphorescent quinoline-platinum (Ⅱ) complexes & blue-green phosphorescent polymetallic complexes were synthesed. The structures of the target products and the intermediates were characterized by 1H NMR, MS and elementary analysis. Details are as follows:1, Six new phosphorescent platinum complexes based on 2-phenylpyridine and a variety of electron-withdrawing/electron-donating group modified 5-substituted-8-hydroxyquinoline derivatives was synthesized by coordinated with platinum. The UV-vis absorption, fluorescence at 77 K, electrochemical in dichloromethane solution and solid fluorescence were investigated. The quantum efficiency were also obtained by using integral sphere, quantum efficiency of compounds a,c,e,f (the substituent respectively for -NO2,-CF3, p-methylphenyl, triarylamine) is respectively for 2.5%, 10.5%,2.5%,2.4%; The quantum efficiency were also obtained at 77 K, quantum efficiency of compounds a,c,e,f is respectively for 26.31%,27.68%,9.98%,7.33%.2, With 9,9’-Spirobifluorene structure for the framework, two novel phosphorescent ligands were synthesized by Suzuki coupling reaction linked to 2-phenylpyridine or 2-picolinic acid group at 2,2’,7,7’seat, then two phosphorescent Iridum complexes including four metal Iridum were synthesized from ligands and Indium trichloride monohydrate.3, A novel anthracene derivatives 9-(3,5-bis(4’-N,N-diphenyl)amine)-phenyl anthracene, was synthesized by Ullmann reaction, Boric acidification and Suzuki coupling reaction from 9-Bromoanthracene,1,3,5-Tribromobenzene, 1-Bromo-4-iodobenzene and Diphenylamine as the starting materials. The structure was characterized by 1H NMR and elemental analysis. The UV-vis absorption and fluorescence were investigated.