GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD

Provided are a spiro compound comprising an asymmetric alkyl substitution and an organic electroluminescent device. The spiro compound has a structure represented by formula (1). The material exhibits advantages such as high photoelectric stability, low sublimation temperature, low driving voltage, low lateral carrier mobility, high luminous efficiency, and long device service life, making it suitable for use in organic electroluminescent devices. Additionally, the material has a lower melting point, which enhances evaporation stability when utilized as a melt-processable material. The compound, particularly as a hole injection and transport material, has potential applications in the AMOLED industry.

The present application relates to a metal iridium complex and an organic electroluminescent device. The metal iridium complex has a general formula of Ir(La)(Lb)(Lc), the structure thereof being shown as a formula (1). The metal iridium complex provided by the present application has the advantages of low evaporation deposition temperature, high optical and electrochemical stability, narrow half-peak width, high color saturation, high light-emitting efficiency, long device service life and the like. Therefore, the metal iridium complex can be used in organic light-emitting devices, particularly used as a red light-emitting phosphorescent material, and has the possibility of being applied to the AMOLED industry.

The present invention relates to an organometallic compound and application thereof. The organometallic compound has a general formula of Ir(La)(Lb)(Lc), where La is a structure represented by Formula (1). The compound provided by the present invention has the advantages of high optical and electrical stability, narrow emission half-peak width, high color saturation, high luminous efficiency, long device service life and the like, and can be used in organic electroluminescent devices. In particular, the compound has the potential for application in the AMOLED industry as a green light-emitting dopant.

A metal complex and an electroluminescent device. The metal complex has a general formula of Ir(La)(Lb)(Lc), the structure of which is represented by formula (1). The metal complex has the advantages of a low evaporation temperature, high photochemical and electrochemical stability, a narrow half-peak width, a high color saturation, a high light-emitting efficiency, a long device service life, etc., can be used in an organic light-emitting device and especially used as a red light-emitting phosphorescent material, and has the potential of being applied to the AMOLED industry.

The present invention relates to a platinum complex having an ONCN tetradentate ligand and containing carbazole, and the platinum complex has a structure as shown in a formula (I). The complex has bright green light emission wavelengths, and can be used in the field of OLED organic electroluminescent materials. By means of the structural design, the present invention can improve the heavy atomic effect of phosphorescent materials, enhance spin-spin coupling, and achieve high-efficiency conversion of T1-S0, thereby achieving high luminous efficiency. Moreover, a platinum complex molecule having an ONCN tetradentate ligand has simple synthetic steps and may modifiable sites. The steric hindrance added by the carbazole group contained can effectively reduce the aggregation effect between molecules, avoid the formation of an exciplex, and further improve the color purity and the luminous efficiency.

The present invention relates to a compound and an organic light-emitting device containing the compound. The compound has a structure as shown in Formula (1), where X is selected from the group consisting of: O, S, Se, CR 3 R 4 , SiR 5 R 6 , GeR 7 R 8 and BR 9 . The compound can be used in organic light-emitting devices, particularly as a host material or a hole blocking layer material in an emitting layer of a device or both as the host material and hole blocking layer material simultaneously. Moreover, the compound can provide a higher luminous efficiency for a device, especially has the advantages such as a longer service life of a device, and has the possibility to be applied to the AMOLED industry.

The present disclosure relates to a metal iridium complex and use thereof. The metal iridium complex has a general formula Ir(La)(Lb)(Lc), wherein La is the structure represented by formula (1), and Lb is the structure represented by formula (2). The complex has the advantages of low driving voltage, low sublimation temperature, good optical and electrical stability, high luminous efficiency, long service life, high color saturation, and the like, can be used in organic light-emitting devices, and especially as a red luminous phosphorescent material, and has the possibility of being applied to the AMOLED industry.

The present disclosure relates to an organic electroluminescent material having a structural formula as shown in formula (A) or (B). Based on a conventional B-N resonance structure, in such material, an aromatic ring that does not participate in the resonance is fixed to a resonance ring by means of a dimethyl-substituted methylene group to form a larger rigid structure, thereby decreasing non-radiative vibration, reducing delayed fluorescence lifetime and reducing efficiency roll-off. Moreover, the introduction of the dimethyl-substituted methylene distorts the B-N planar skeleton, which can reduce fluorescence quenching at high concentrations, thereby obtaining relatively high efficiency. In addition, when Cy1 and Cy2 are different, especially after a heteroatom is introduced, this type of asymmetric structure can further distort the molecular plane, reduce film aggregation and quenching, and achieve a higher current efficiency.

An O∧C∧N∧N tetradentate platinum (II) complex has a structure as shown in Formula (I) below. Compared with a conventional devices, the organic light-emitting device prepared as described herein has better performance. The novel O∧C∧N∧N tetradentate platinum (II) complex has great application value. The tetradentate platinum (II) complex is based on a carbazole framework, and has a large π-conjugated rigid planar structure, which can greatly reduce non-radiative energy dissipation such as intramolecular rotation and vibration, and is conducive to improving the luminous efficiency and performance of the platinum (II) complex. The O∧C∧N∧N tetradentate platinum (II) complex metal organic material has great application values in organic light-emitting diodes, and is used as a phosphorescent doping material to produce a red light OLED device with high luminous efficiency. Applications of and methods of preparing the O∧C∧N∧N tetradentate platinum (II) complex are described.

The present invention relates to an organic metal compound and application thereof. The organometallic compound has a structure as shown in Formula I. The compound provided by the present invention has the advantages of low sublimation temperature, high light and electricity stability, high luminous efficiency, long lifetime, high color saturation and the like, can be used in an organic light-emitting device, and particularly has a possibility of being applied to an AMOLED industry as a red luminescent phosphorescent material.