Provided are an organic electroluminescent material and device. The organic electroluminescent material is a compound having a structure of Formula 1. Those novel compounds are applicable to electroluminescent devices and can provide better device performance, such as an increase in device lifetime. Further provided are an electroluminescent device containing the compound and a compound composition containing the compound.

Provided are an organic electroluminescent material and device. The organic electroluminescent material is a compound having a structure of Formula 1. Those novel compounds are applicable to electroluminescent devices and can provide better device performance, such as an increase in device lifetime. Further provided are an electroluminescent device containing the compound and a compound composition containing the compound.

The present specification relates to a multicyclic compound represented by Chemical Formula 1, and an organic light emitting device including the same.

The present specification relates to a multicyclic compound represented by Chemical Formula 1, and an organic light emitting device including the same.

The present invention relates to methods for treating cannabis biomass in order to isolate tetrahydrocannabinolic acid (THCA). In another aspect, the present invention relates to a process that involves purification followed by extraction of cannabis biomass to isolate and improve yields of high-purity crystalline extracts.

The present invention relates to methods for treating cannabis biomass in order to isolate tetrahydrocannabinolic acid (THCA). In another aspect, the present invention relates to a process that involves purification followed by extraction of cannabis biomass to isolate and improve yields of high-purity crystalline extracts.

Provided are an organic compound, an electroluminescent material and use thereof. The organic compound has a structure as shown in Formula I. Through the molecular structure design, the organic compound has a deep LUMO energy level, which can reduce electron injection potential barrier and improve electron injection ability; it has a deep HOMO, which can effectively block holes and make more electron-holes recombine in the light-emitting layer; it has a high triplet energy level E.sub.T1, which can effectively block light-emitting layer excitons. The molecule has a twisted spiro structure, which can reduce molecules stacking, avoid crystallization, show excellent thermal stability and film stability, and help improve luminous efficiency and lifetime. As electroluminescent materials, the organic compound is suitable for an electron transport layer and/or a hole blocking layer of OLED devices and can reduce voltage and power consumption, improve luminous efficiency and working lifetime to have better comprehensive performance.

Provided are an organic compound, an electroluminescent material and use thereof. The organic compound has a structure as shown in Formula I. Through the molecular structure design, the organic compound has a deep LUMO energy level, which can reduce electron injection potential barrier and improve electron injection ability; it has a deep HOMO, which can effectively block holes and make more electron-holes recombine in the light-emitting layer; it has a high triplet energy level E.sub.T1, which can effectively block light-emitting layer excitons. The molecule has a twisted spiro structure, which can reduce molecules stacking, avoid crystallization, show excellent thermal stability and film stability, and help improve luminous efficiency and lifetime. As electroluminescent materials, the organic compound is suitable for an electron transport layer and/or a hole blocking layer of OLED devices and can reduce voltage and power consumption, improve luminous efficiency and working lifetime to have better comprehensive performance.

The present application relates to materials for use in electronic devices, to processes for preparing the materials, and to electronic devices containing the materials.

The present application relates to materials for use in electronic devices, to processes for preparing the materials, and to electronic devices containing the materials.