ORGANIC LIGHT-EMITTING DIODES COMPRISING AT LEAST ONE DISILYL COMPOUND SELECTED FROM DISILYLCARBAZOLES, DISILYLDIBENZOFURANS, DISILYLDIBENZOTHIOPHENES, DISILYLDIBENZOPHOLES, DISILYLDIBENZOTHIOPHENE S-OXIDES AND DISILYLDIBENZOTHIOPHENE S,S-DIOXIDES
ORGANIC LIGHT-EMITTING DIODES COMPRISING AT LEAST ONE DISILYL COMPOUND SELECTED FROM DISILYLCARBAZOLES, DISILYLDIBENZOFURANS, DISILYLDIBENZOTHIOPHENES, DISILYLDIBENZOPHOLES, DISILYLDIBENZOTHIOPHENE S-OXIDES AND DISILYLDIBENZOTHIOPHENE S,S-DIOXIDES
申请人:Langer Nicolle
公开号:US20110031477A1
公开(公告)日:2011-02-10
The present invention relates to an organic light-emitting diode comprising an anode An and a cathode Ka and a light-emitting layer E and if appropriate at least one further layer, where the light-emitting layer E and/or the at least one further layer comprises at least one compound selected from disilylcarbazoles, disilyldibenzofurans, disilyldibenzothiophenes, disilyldibenzophospholes, disilyldibenzothiophene S-oxides and disilyldibenzothiophene S,S-dioxides, to a light-emitting layer comprising at least one of the aforementioned compounds, to the use of the aforementioned compounds as matrix material, hole/exciton blocker material, electron/exciton blocker material, hole injection material, electron injection material, hole conductor material and/or electron conductor material, and to a device selected from the group consisting of stationary visual display units, mobile visual display units and illumination units comprising at least one inventive organic light-emitting diode.
Cyanophenylcarbazole isomers exhibiting different UV and visible light excitable room temperature phosphorescence
作者:Yanhui Wang、Zhenzhen Zhang、Linxi Liu、Shou Yuan、Jie Ma、Danfeng Liu、Shanfeng Xue、Qikun Sun、Wenjun Yang
DOI:10.1039/c9tc03444g
日期:——
phenylcarbazoles with cyano at the para-, meta-, and ortho-position of the phenyl ring (PCN, MCN and OCN) and the 2- and 3-position of the carbazole ring (2CN, 3CN) are systematically designed and synthesized. These crystals all have RTP activity under 365 nm UV and 400–460 nm visible light excitation but exhibit different RTP intensities and lifetimes. The crystalpackinganalysis and quantum chemical calculations
Herein, a nickel-catalyzed synthesis of an aryl nitrile via aryl exchange between an aromatic amide and a simple nitrile was developed. By using cheap, easy-to-handle, and low-toxic 4-cyanopyridine as the cyanating source, cyanation of various aromatic amides afforded an assortment of aryl nitriles including bioactive drugs and organic luminescent molecules in good yields. The reaction exhibited wide
glum values. Notably, CP-OLEDs based on the enantiomers feature blueelectroluminescence centered at 468 nm with external quantum efficiencies (EQEs) of 12.5 and 12.7 %, and also show intense CPEL with gEL values of -1.2×10-2 and +1.4×10-2 , respectively. These are the first CP-OLEDs based on TADF-active enantiomers with efficient blue CPEL.