- Iridium complexes based on carbazole-oxadiazole serving as main ligands as well as preparation and application method thereof
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The invention relates to iridium complexes based on carbazole-oxadiazole serving as main ligands. The series of iridium complexes take two carbazole-oxadiazole derivatives as the main ligands and picolinic acid as an auxiliary ligand. The iridium complexes with the structure have the advantages of high light-emitting efficiency, simple process, low manufacturing cost and the like. The iridium complexes can be used for adjusting the light-emitting organic electroluminescence range and the light-emitting efficiency by changing the number of F atoms on the oxadiazole and the connection position of the position. Moreover, through the application of the iridium complexes synthesized by the method, the life is relatively short and the properties of devices are improved.
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Paragraph 0040; 0042; 0043
(2018/09/08)
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- Carbazole-linked porphyrin dimers for organic light emitting diodes: Synthesis and initial photophysical studies
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Carbazole linked porphyrin dimers were synthesized in good yields via stepwise Suzuki coupling reactions using bromoporphyrins and borylated carbazoles as the precursors, the latter of which were synthesized via known procedures from biphenyl derivatives. For comparative purposes porphyrin-carbazole monomers were synthesized. Single layer organic light emitting diodes (OLEDs) were created to demonstrate the optical properties of these materials. Light emission from these carbazole substituted porphyrins showed better results compared to previously examined bromo substituted porphyrins with better electroluminescence and lower turn-on voltages. Dimers exhibited turn-on voltages of 3 V compared to 6 V for monomeric porphyrin-carbazoles.
- Ryan, Aoife,Tuffy, Brian,Horn, Sabine,Blau, Werner J.,Senge, Mathias O.
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p. 8248 - 8254
(2011/11/12)
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- Practical syntheses of N-hexylcarbazol-2-yl- and -3-yl-boronic acids, their cross-coupled products and a derived tris-cyclometalated (pyridin-2-yl) carbazole iridium(III) complex
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The syntheses of N-hexylcarbazol-2-yl- and -3-yl-boronic acids (1 and 2) are described on a ca. 7 g scale, starting from commercially available 2,5-dibromonitrobenzene (4) and carbazole (11), respectively. Compounds 1 and 2 underwent efficient palladium-catalyzed cross-coupling reactions under Suzuki-Miyaura conditions to yield products 17,18 and 20. Compound 18 reacted with IrCl3 to give the tris-cyclometalated (pyridin-2-yl)carbazole iridium(III) complex 21, the X-ray crystal structure of which is reported. Georg Thieme Verlag Stuttgart.
- Tavasli, Mustafa,Bettington, Sylvia,Bryce, Martin R.,Batsanov, Andrei S.,Monkman, Andrew P.
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p. 1619 - 1624
(2007/10/03)
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