کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5222429 | 1383454 | 2009 | 5 صفحه PDF | دانلود رایگان |
Two novel light-emitting materials bis-[2â²-2â³-(9H-fluoren-2-yl)-vinyl-8-hydroxyquinoline] zinc(II) (3) and bis-[2â²-4â³-(4,5-diphenyl-1H-imidazol-2-yl)styryl-8-hydroxyquinoline] zinc(II) (4) containting 8-hydroxyquinoline and fluorene or imidazole moieties have been synthesized. The optical properties of these complexes were influenced by the styryl substituents, and exhibited orange-emission. They have higher fluorescence quantum yields than Alq3, and good stabilities with thermal decomposition temperatures 395 °C and 435 °C. The single-layer OLED fabricated by 3 emitted lemon-yellow, and exhibited good device performance with a maximum luminance of 489 cd mâ2, and luminance efficiency of up to 0.41 cd Aâ1. The single-layer OLED fabricated by 4 emitted yellow-green, and exhibited good device performance with a maximum luminance of 323 cd mâ2, and luminance efficiency of up to 0.54 cd Aâ1.
Journal: Tetrahedron - Volume 65, Issue 32, 8 August 2009, Pages 6325-6329