An organic light emitting element produced by using a light emitting composition that contains both a first compound having a PBHT value more than 0.730 and a second compound having ES1 lower than that of the first compound and AEsT less than 0.20 eV is excellent in durability. ES1 is the lowest excited singlet energy level, AEsT is the difference between the lowest excited singlet energy level and the lowest excited triplet energy level.

The present application provides an electroluminescent material, a method for manufacturing an electroluminescent material, and a light emitting device, by employing the strong electron-withdrawing group such as cyano, pyridine, pyrimidine, or s-triazine to enhance the electron-withdrawing property of the fluorenone receptor unit, a captodative electron effect between the electron donor unit and the electron acceptor unit in the molecule is enhanced, so that the intermolecular charge transfer property is enhanced while the red light shifts, thereby further reducing the energy level difference between the single-line energy level and the triplet energy level of the target molecule, to realize a long life span, red light emitted electroluminescent material, a method for manufacturing the electroluminescent material and a light emitting device.

The present application provides an electroluminescent material, a method for manufacturing an electroluminescent material, and a light emitting device, by employing the strong electron-withdrawing group such as cyano, pyridine, pyrimidine, or s-triazine to enhance the electron-withdrawing property of the fluorenone receptor unit, a captodative electron effect between the electron donor unit and the electron acceptor unit in the molecule is enhanced, so that the intermolecular charge transfer property is enhanced while the red light shifts, thereby further reducing the energy level difference between the single-line energy level and the triplet energy level of the target molecule, to realize a long life span, red light emitted electroluminescent material, a method for manufacturing the electroluminescent material and a light emitting device.

The present invention discloses a 9,10-dihydro-acridine derivative having a structure of Formula (I). The compound has a suitable HOMO energy level that matches that of an anode and light emitting layer when used as a material of a hole transport layer, thus reducing the potential barrier needed to overcome when holes are transported to the light emitting layer, and reducing the operating voltage of the device. Moreover, the 9,10-dihydro-acridine derivative has high triplet energy level and LUMO level, to avoid the returning of energy from the light emitting layer, retain the electrons in the light emitting layer, increase the probability of recombination of electrons and holes in the light emitting layer, and enhance the luminescence efficiency of the device. The compound of Formula (I) has high glass transition temperature, good film forming performance, and high thermal stability. The present invention further discloses an organic light-emitting device having at least one functional layer containing the 9,10-dihydro-acridine derivative. When the compound is used as a material of the hole transport layer, a light-emitting device of high luminescence efficiency and low driving voltage is obtained.

The present invention discloses a 9,10-dihydro-acridine derivative having a structure of Formula (I). The compound has a suitable HOMO energy level that matches that of an anode and light emitting layer when used as a material of a hole transport layer, thus reducing the potential barrier needed to overcome when holes are transported to the light emitting layer, and reducing the operating voltage of the device. Moreover, the 9,10-dihydro-acridine derivative has high triplet energy level and LUMO level, to avoid the returning of energy from the light emitting layer, retain the electrons in the light emitting layer, increase the probability of recombination of electrons and holes in the light emitting layer, and enhance the luminescence efficiency of the device. The compound of Formula (I) has high glass transition temperature, good film forming performance, and high thermal stability. The present invention further discloses an organic light-emitting device having at least one functional layer containing the 9,10-dihydro-acridine derivative. When the compound is used as a material of the hole transport layer, a light-emitting device of high luminescence efficiency and low driving voltage is obtained.

An organic molecule is disclosed having a structure of formula I, ##STR00001## wherein T is selected from the group consisting of CN and CF.sub.3; V, W and Y is independently from each other selected from the group consisting of CN, CF.sub.3 and R.sup.2; Z is at each occurrence independently from another selected from the group consisting of a direct bond, CR.sup.3R.sup.4, C═CR.sup.3R.sup.4, C═O, C═NR.sup.3, NR.sup.3, O, SiR.sup.3R.sup.4, S, S(O) and S(O).sub.2; wherein exactly one substituent selected from the group consisting of T, V, W and Y is CN; and exactly one substituent selected from the group consisting of T, V, W and Y is CF.sub.3.

The present specification provides an amine compound and an organic light emitting device including the same.

The present specification provides an amine compound and an organic light emitting device including the same.

The present invention relates to a process for coupling a heterocyclic aromatic ring AR1 and a carbocyclic or heterocyclic aromatic ring AR2 to each other by a light-assisted decarboxylative carbon-carbon cross-coupling reaction, wherein a reaction medium is provided by mixing a first reactant, a second reactant and a catalyst composition, wherein the catalyst composition comprises (i) a palladium compound which is a palladium salt or a palladium complex or a mixture thereof, and (ii) a polycyclic compound of Formula (I), (II) or (III):

##STR00001## the reaction medium is irradiated by an external light source, thereby coupling the heterocyclic aromatic ring AR1 of the first reactant to the aromatic ring AR2 of the second reactant by a decarboxylative carbon-carbon cross-coupling reaction.

A compound represented by the general formula (11) is useful as a light-emitting material. R.sup.1, R.sup.2, R.sup.4 and R.sup.5 represent a group represented by the general formula (2), R.sup.11 to R.sup.20 represent a hydrogen atom or a substituent, and L.sup.12 represents a substituted or unsubstituted arylene group or a substituted or unsubstituted heteroarylene group. ##STR00001##