Abstract: The present invention relates to “a method for synthesizing 2,6-bis[3?-(N-carbazolyl)phenyl]pyridine compound”, and belongs to the field of chemical synthesis. In the present invention, a pyridine ring is formed by cyclization, the intermediate product can be directly used in the next reaction without purification and thus the process is very easy; the final product I will precipitate from the mixed reaction solution after the completion of the reaction, and the product can be very conveniently extracted.

Abstract: A transparent carbon nano-tube (CNT) polymer compound conductive inks and preparation methods thereof. The conductive ink includes modified CNT, conductive polymer, water-soluble polymer cosolvent, polymer modification additive, surfactant and deionized water. Preparation is performed to realize uniform dispersion of CNT and conductive polymer solution and the obtained ink has good stability and re-dispersibility. The CNT polymer compound conductive ink and methods can be used for preparing fine electrode patterns under room temperature by adopting such devices as spin coating and ink jet printing. Photoresist conductive ink can be prepared to realize one-off preparation of electrode patterns with fine structures. The ink can be applied for very transparent electrode materials in such devices as flexible OLED displays, solar cells, liquid crystal displays and panels of touch screens.

Abstract: An “organic electroluminescent material and organic electroluminescent device (OED)” with the structure as formula (I) is disclosed herein. The OED possesses high electronic transmission and injection capacity by using the compound having an acenaphtho[1,2-c]pyridine (ANP) group as electronic transport material. It also enhances luminous efficiency and lifetime of the device because of its excellent thermal stability and film-forming properties. At the same time, the OED possesses high triplet energy level and excellent electronic transport capacity by using the compound having the ANP group as the main body of phosphorescence material. It enhances the number of electrons in light-emitting layer and the efficiency of the device effectively.

Abstract: The OLED in the present invention comprises an anode, a cathode, and one or multiple organic layers, and the organic layer at least contains one kind of material with the following chemical formula I. The OLEDs made by this organic light emitting material have advantages such as good light emitting efficiency, excellent color purity and long lifetime.

Abstract: The present invention also relates to an organic electronic material with the structure of formula (I). It is a kind of hole transport and injection material with good thermal stability, high hole mobility and excellent solubility. The OLEDs prepared thereof have the advantages such as good light emitting efficiency, excellent color purity and long lifetime.

Abstract: Disclosed is an improved sublimation method for the purification of organic small molecules. The new method features that barriers are applied in the collection region of sublimation tube so that the gas flow path is modified to pass through or bypass the barriers from the heating region to the vacuum pump. The arrangement of the barriers can effectively separate the main product from the impurities. The main product is enriched in a collection region, while the volatile impurities are enriched in an impurity region. This method has been proved to improve the quality of sublimed materials substantially according to the purity measurements and OLED performance tests.

Abstract: The present invention discloses an “organic light-emitting device (OLED)”, comprising an anode, a cathode, and one or more organic layers, wherein the said organic layer contains at least one compound having the formula (I), and the said OLED has the advantages of excellent light-emitting efficiency, excellent color purity and long lifetime.

Abstract: An organic light-emitting material having the structure of formula (I) or (II) as described below and an organic light-emitting device (OLED) are disclosed. The OLED adopts the compound containing fluoranthene group as the electron transport material possessing good electron transport and injection ability. The material also enhances the luminous efficiency and lifetime of the device because of its excellent thermal stability and film-forming properties. At the same time, the high triplet energy and excellent electron transport capacity of the material containing fluoranthene group make it suitable to be used as the host for phosphorescent devices, increasing the number of electrons in the light-emitting layer and the efficiency of the device.

Abstract: The present invention discloses an “organic light-emitting device (OLED)”, comprising an anode, a cathode, and one or more organic layers, wherein the said organic layer contains at least one compound having the formula (I), and the said OLED has the advantages of excellent light-emitting efficiency, excellent color purity and long lifetime.

Abstract: Disclosed is an improved sublimation method for the purification of organic small molecules. The new method features that barriers are applied in the collection region of sublimation tube so that the gas flow path is modified to pass through or bypass the barriers from the heating region to the vacuum pump. The arrangement of the barriers can effectively separate the main product from the impurities. The main product is enriched in a collection region, while the volatile impurities are enriched in an impurity region. This method has been proved to improve the quality of sublimed materials substantially according to the purity measurements and OLED performance tests.

Abstract: The present invention relates to efficient synthetic method of 1,3,5-tris (N-Phenylbenzimidazole) Benzene and pertains to the field of synthesis of organic light-emitting materials. The method and process of the patent are as following: 1,3,5-tris (N-Phenyl-N Phenylammonium) Benzamide is treated by shrinking agent but no high temperature required, and then high purity product can be reached after raw material dissolved. The reaction only takes a few minutes and through recrystallization the purity can be over 99%, and then the material with stable crystal phase reached after sublimation step. The method introduced by the present patent is easy to operate, and with high in yield and purity, which adapt industrial production and has important significance for the industrialization.

Abstract: The present invention relates to Aromatic ring substituted dianthracene compounds and pertains to the field of synthesis of organic light-emitting materials. Aromatic ring substituted dianthracene compounds in the formula (I) present high glass transition temperature and solution efficiency, which can be used as effective blue-light emitting host materials.

Abstract: A synthetic method for preparing organometallic iridium compounds is provided and includes the two steps of (1) synthesizing a di-iridium compound with a halogenated bridge: L2Ir(??X)2IrL2, L; and (2) reacting L2Ir(??X)2IrL2 with a ligand to give the product [C?]N]2Ir (LX). The invention is an improvement over the traditional method for preparing such compounds and has the advantages of shortened reaction time, increased yield, and products of over 99% purity obtained without chromatography.

Abstract: This invention, which belongs to the field of organic synthesis, involves “One-step synthetic method of 2,9-dimethyl-1,7-diphenyl-1,10-phenanthroline”. This method uses O-phenylenediamine and formula III to react under the condition of mixed-shrinking agent, the synthesis can be completed in one step, the stated mixed-shrinking agent is mixture of hydrochloric acid and organic acid. The organic acid serves as phase transfer catalyst and shrinking agent, meanwhile, as buffer reagent, organic acid reduces polymerization of III, and side products as well. The products gained are of high purity and the reaction is mild and easy to control. Since there is no polluting material added and generated, the waste is safe to discharge. In the after treatment of reaction, ketone solvent is used to reduce separation step and product lost, thus improving yield.

Abstract: This invention, which involves “the preparation method of 8-hydroxyquinoline metallic compound”, is a synthetic method of organic electroluminescent materials. The preparation method of compound Mqnqm? is to add solution prepared by Zengshui solvent and industrial ligand into reaction vessel, stir it at a certain temperature, and then achieve high-purity product, as for the Mqnqm?, M stands for Al, Li, n stands for 1-3, m is 0-2, q is 8-hydroxyquinoline and its derivatives, and q? is ligand different from q. Zengshui solvent is adopted in this invention which can react effectively and thus reducing reaction time and avoiding cumbersome operation and the refining process; this invention also increases total yield and purity, the mother liquor obtained can be recycled, which reduces environment pollution and cost as well.

Abstract: This invention, which involves synthetic method of 5, 5- dimethyl-2, 4-adipaldehyde-0, 0-Boron difluoride, belongs to the field of organic synthesis. Synthetic method of 5, 5-dimethyl-2, 4-adipaldehyde-0, 0-Boron difluoride is to react pinacolone and boron trifluoride diethyl ether at low temperature, and then add aqueous alkaline solution in after treatment to extract product from ether, after that, separate fluid, condense organic phase and final product is obtained. Yield of this method is 2 to 3 times higher than that in literature, and apart from that, mild reaction condition, simple procedures, easy operation, and low cost make it easy for industrial production. The product can be used directly in next step reaction without any special purification.

Abstract: This invention, which involves “the synthetic method of 9, 9?-biantnthracine”, belongs to the field of synthetic technology of organic electroluminesent materials. Synthetic method of 9, 9?-bianthracine is to add anthraquinone as raw material and zinc as reducing agent in glacial acetic acid solution, then batch addition of hydrochloric acid at 70-120°, maintain the temperature unchanged and react, then 9, 9?-bianthracine is achieved. This invention uses one-step method to synthesize 9, 9?-bianthracine, which reduces not only cost but also generation of side products, in addition, the products obtained need no purification and can be directly used to synthesize related similar compounds, therefore, it is very suitable for large-scale industrial production.

Abstract: This invention, which belongs to the field of organic electroluminesent materials synthetic technology, involves synthetic method of 10,10?-Dibromo-9,9?-bianthryl. The synthetic method is to use 9,9?-bianthryl as raw material, chlorinated hydrocarbon as solvent, bromide as bromine agent and react. This method not only produces no environmental pollution, but also enjoys high yield, therefore, it is suitable for industrial production.