Abstract: The subject invention pertains to cocrystals of dexamethasone (DEX) and a benzenediol cocrystal composed of a 1:1 molar ratio of DEX and the benzenediol. The benzenediol can be catechol (CAT) or resorcinol (RES). The DEX and benzenediol cocrystal are formed by grinding crystalline DEX where the crystalline benzenediol are combined in the 1:1 molar ratio. Grinding can be performed at room temperature. Cocrystals can be thermally annealed or exposed to humidity to enhance cocrystal formation. The DEX?CAT or DEX-RES cocrystals can be included in a medicament for use in treatments for allergies, asthma, rhinitis, cancer, diabetes, anemia, ulcers, and viral infections. The DEX?benzenediol cocrystal can be sieved to provide particles that are in the range of 10 to 45 ?m that can be used for intranasal administration with improved dissolution performance.

Abstract: This invention relates to an OLED, comprising an anode, a cathode, and an organic layer, the organic layer at least contains one or more layers containing light emitting layer from the hole injection layer, hole transport layer, electron injection layer, electron transport layer, light emitting layer; the light emitting layer is composed of a single compound with the structure of formula (I). The OLED can emit blue light and has the advantages of high light emitting efficiency, excellent color purity and long lifetime.

Abstract: This invention relates to an OLED, comprising an anode, a cathode, and an organic layer, the organic layer at least contains one or more layers containing light emitting layer from the hole injection layer, hole transport layer, electron injection layer, electron transport layer, light emitting layer; the light emitting layer is a host guest doping system composed of host materials and guest materials. The light-emitting zone of the light emitting layer is blue 440-490 nm, and the host material or guest material has a structure with the formula (I). The OLED has the advantages of excellent light emitting efficiency, excellent color purity and long lifetime.

Abstract: This invention relates to an OLED, comprising an anode, a cathode, and an organic layer, the organic layer at least contains one or more layers containing light emitting layer from the hole injection layer, hole transport layer, electron injection layer, electron transport layer, light emitting layer; the light emitting layer is a host guest doping system composed of host materials and guest materials. The light-emitting zone of the light emitting layer is 490-750 nm, and the host material has a structure with the formula (I). The OLED can emit red or green light, with the advantages of excellent light emitting efficiency, excellent color purity and long lifetime.

Abstract: The present invention relates to an organic hole transport material having a compound of the structure shown in formula (I), wherein R1-R2 independently represent hydrogen, C1-C8 substituted or substituted alkyl, C2-C8 substituted or unsubstituted alkenyl, C2-C8 substituted or unsubstituted alkynyl, or C6-C10 substituted or substituted aryl, the substituents being C1-C4 alkyl or halogen. Device experiments show that the organic hole transport material of the present invention has high glass-transition temperature and high thermal stability; a hole-only organic semiconductor diode device and an organic electroluminescent device manufactured by the organic hole transport material have good hole transport performance, high and stable current efficiency, and a long device life.

Abstract: The present invention discloses an “organic electronic material”, belonging to the organic light-emitting device (OLED) display materials field. The organic electronic material in the present invention has a structural formula (I), having good thermal stability, high luminous efficiency, high purity of light emission. The OLED made by this kind of organic light-emitting material has the advantages of excellent organic light-emitting efficiency, excellent color purity and long service life.

Abstract: The present invention relates to a hole-only organic semiconductor diode device, comprising an anode, a cathode, and organic layers, wherein the anode and the cathode are made of metal, inorganic materials or organic compounds; the organic layers are a hole injection layer, a hole transport layer, and an electron barrier layer; the electron barrier layer, the hole transport layer and/or the hole injection layer contain the compound of formula (I). Device experiments show that the hole-only organic semiconductor diode device of the present invention has good electron transport performance, high and stable current efficiency, and a long device life.

Abstract: The present invention relates to an organic hole transport material having a compound of the structure shown in formula (I), wherein R1-R2 independently represent hydrogen, C1-C8 substituted or substituted alkyl, C2-C8 substituted or unsubstituted alkenyl, C2-C8 substituted or unsubstituted alkynyl, or C6-C10 substituted or substituted aryl, the substituents being C1-C4 alkyl or halogen. Device experiments show that the organic hole transport material of the present invention has high glass-transition temperature and high thermal stability; a hole-only organic semiconductor diode device and an organic electroluminescent device manufactured by the organic hole transport material have good hole transport performance, high and stable current efficiency, and a long device life.

Abstract: The present invention relates to an organic electron transport material having a compound of the structure shown in formula (I), wherein R1-R4 independently represent hydrogen, C1-C8 substituted or substituted alkyl, C2-C8 substituted or unsubstituted alkenyl, or C2-C8 substituted or unsubstituted alkynyl, the substituents being C1-C4 alkyl or halogen. Device experiments show that an electronic-only organic semiconductor diode device and an organic electroluminescent device manufactured by the organic electron transport material of the present invention have good electron transport performance, high and stable luminance, and a long device life.

Abstract: An electronic-only organic semiconductor diode device comprises an anode, a cathode and organic layers. The anode and the cathode are made of metal, inorganic matters and organic compounds. The organic layers are a hole barrier layer, an electron transport layer and an electron injection layer. The hole barrier layer, the electron transport layer and/or the electron injection layer contains the compound of formula (I), wherein R1-R4 independently represent hydrogen, C1-C8 substituted or substituted alkyl, C2-C8 substituted or unsubstituted alkenyl, or C2-C8 substituted or unsubstituted alkynyl, the substituents being C1-C4 alkyl or halogen. Device experiments show that the electronic-only organic semiconductor diode device and an organic electroluminescent device manufactured by the organic electron transport material of the present invention have good electron transport performance, high and stable luminance, and a long device life.

Abstract: The present invention relates to an OLED, comprising an anode, a cathode and one or more organic layers, and at least one of the organic layers comprising a material having the following chemical formula I or II. Since the compound having the formula (I) in the present invention has electron-withdrawing groups and electron-donating groups with high stability, stable chemical bonds exist between them, without strong conjugation. With these characteristics, the compound having the formula (I) has higher fluorescence quantum efficiency and excellent charge transport ability, and its emission spectra are closer to the international standard of dark blue, to facilitate to the realization of full-color displays with higher color purity.

Abstract: The present invention discloses an organic electronic luminescent material, with the chemical formula (I). The compounds having the chemical formula (I) in the present invention have highly stable electron-withdrawing groups and electron-donating groups with stable chemical bonds between them but without a strong conjugation. With these features, the compounds with the formula (I) have high fluorescence quantum efficiency and excellent charge transport ability. These compounds are closer to the dark color of international standard, which is conducive to achieve full color displays with higher color purity.

Abstract: This invention relates to an OLED, comprising an anode, a cathode, and an organic layer, the organic layer at least contains one or more layers containing light emitting layer from the hole injection layer, hole transport layer, electron injection layer, electron transport layer, light emitting layer; the light emitting layer is composed of a single compound with the structure of formula (I). The OLED can emit blue light and has the advantages of high light emitting efficiency, excellent color purity and long lifetime.

Abstract: This invention relates to an OLED, comprising an anode, a cathode, and an organic layer, the organic layer at least contains one or more layers containing light emitting layer from the hole injection layer, hole transport layer, electron injection layer, electron transport layer, light emitting layer; the light emitting layer is a host guest doping system composed of host materials and guest materials. The light-emitting zone of the light emitting layer is blue 440-490 nm, and the host material or guest material has a structure with the formula (I). The OLED has the advantages of excellent light emitting efficiency, excellent color purity and long lifetime.

Abstract: The present invention discloses an “organic electronic material”, belonging to the organic light-emitting device (OLED) display materials field. The organic electronic material in the present invention has a structural formula (I), having good thermal stability, high luminous efficiency, high purity of light emission. The OLED made by this kind of organic light-emitting material has the advantages of excellent organic light-emitting efficiency, excellent color purity and long service life.

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: 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: 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: 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.