Synthesis and Characterization of 9‐(Fluoren‐2‐yl)anthracene Derivatives as Efficient Non‐Doped Blue Emitters for Organic Light‐Emitting Diodes
作者： Narid Prachumrak , Supawadee Namuangruk , Tinnagon Keawin , Siriporn Jungsuttingwong , Taweesak Sudyoadsuk
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摘要: A series of 9-(fluoren-2-yl)anthracene derivatives bearing either thiophene (FATh), triphenylamine (FAT and FATT) or pyrene (FATP) moieties as substituents have been designed, synthesized, characterized non-doped blue emitters for organic light-emitting diodes (OLEDs). Their optical, electrochemical thermal properties investigated, their molecular structure-property relationships were evaluated. All FAT, FATT FATP compounds possess combined blue-light-emitting hole-transporting characteristics, showed stable amorphous states with high fluorescence quantum yields in solution (up to 89 %) strong luminance the OLED devices, whereas FATh poor photoluminescent electroluminescent properties. Efficient, Alq3-based green OLEDs fabricated characterized. The devices maximum efficiencies CIE coordinates 3.17 cd A–1 (0.13, 0.14), 3.81 (0.28, 0.50) achieved, respectively, having 4-{bis[4′-(diphenylamino)biphenyl-4-yl]amino}phenyl emitting layer layer, respectively. These also considerably low turn-on voltages 3.0 2.6 V,
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