Abstract: The present invention relates to a spiro-containing platinum compound and an organic light-emitting device. The structure of the spiro-containing platinum compound is as shown in formula (I). Provided is a spiro-containing platinum compound having ONCN tetradentate ligand. The material can enhance the heavy-atom effect in phosphorescent materials, thereby improving the utilization rate of energies of both singlet and triplet excitons in the luminescence process. The spiro structure in the platinum compound provides a sufficient 3D spatial configuration, which reduces aggregation-induced quenching effects and further improves the luminous efficiency, offering significant potential for advancing the industrial application of such materials. The platinum compound, when applied in organic light-emitting diodes, exhibits high efficiency, good thermal stability, photophysical properties and device lifetime.

Abstract: The present application relates to a platinum complex luminescent material. The platinum complex is a compound having the structure represented by chemical formula (I) The present application also provides an organic electroluminescent device, including a cathode, an anode and an organic layer. The organic layer includes one or more of a hole injection layer, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron transport layer, or an electron injection layer. At least one layer of the organic layer contains the compound represented by formula (I).

Abstract: The present disclosure provides an engineered ketoreductase polypeptide capable of preparing chiral alcohols, especially for catalyzing the reduction of ethyl 4-chloroacetoacetate to produce ethyl (R)-4-chloro-3-hydroxybutyrate. The polypeptides has high catalytic activity, high stereoselectivity, better thermal stability and solvent tolerance; the reaction process using engineered ketoreductase polypeptides may have a substrate loading of up to 426 g/L and a conversion of up to 99%.

Abstract: A display panel includes a base substrate, an active pattern layer and a first conductive layer. The active pattern layer is disposed on the base substrate, and includes at least one first conductive connection line. The first conductive layer is disposed on a side of the active pattern layer away from the base substrate. The first conductive layer includes at least one connection line extending along a first direction, and a plurality of initialization signal lines arranged along the first direction and extending along a second direction. An end of each initialization signal line is coupled to a connection line in the at least one connection line. The first direction and the second direction intersect. A first conductive connection line in the at least one first conductive connection line is coupled to at least two initialization signal lines that are coupled to a same connection line.

Abstract: 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.

Abstract: A display panel having a hole running through the display panel includes: a base substrate; a plurality of light-emitting devices, organic light-emitting functional layers of the light-emitting devices extending to an edge region; an isolation spacer located on the base substrate within the edge region and which are annular structures that surround the hole, the organic light-emitting functional layers are interrupted at the isolation spacer; and an encapsulation layer covering the plurality of light-emitting devices. An inorganic layer in the encapsulation layer extends to the edge region and covers the isolation spacer and the organic light-emitting functional layers. The isolation spacer includes: an inner layer structure and an outer layer structure. The side of the inner layer structure away from the base substrate is provided with a groove-shaped structure, and the outer layer structure includes a through hole.

Abstract: The present disclosure relates to a tetradentate platinum complex light-emitting material based on a tetraarylethylene skeleton structure and use thereof. The platinum complex is a compound having a structure of chemical formula (I). Such material has the property of aggregation-induced emission, with a relatively high luminescence quantum yield and a short excited-state lifetime. Also provided is an organic electroluminescent photoelectric device, which includes a cathode, an anode and an organic layer. The organic layers are one or more of a hole injection layer, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron transport layer and an electron injection layer. At least one of the organic layers contains the compound represented by structural formula (I).

Abstract: This application provides engineered transaminase polypeptides for the synthesis of Ubrogepant intermediates with high stereoselectivity, high catalytic activity and good stability. This application also provides a reaction process for the asymmetric synthesis of Ubrogepant intermediates using the transaminase polypeptide.

Abstract: The present application relates to a platinum complex and a device comprising the same. The platinum complex is a compound of a structure of a chemical formula (I). The device is an organic light-emitting diode, an organic thin film transistor, an organic photovoltaic device, a luminescent electrochemical cell, or a chemical sensor.

Abstract: The present disclosure relates to a binuclear platinum complex luminescent material and application thereof. The binuclear platinum complex luminescent material has the structure of chemical formula (I), exhibiting relatively good luminous efficiency and device lifetime when applied to an organic light-emitting diode. The present disclosure also provides an organic electroluminescent device, including a cathode, an anode, and an organic layer. The organic layer is one or more of a hole injection layer, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer. At least one of the organic layers includes the compound of structural formula (I).

Abstract: The present application relates to a divalent platinum complex with a high color purity, which has a structure of chemical formula (I). The present application further provides an organic electroluminescent device, including a cathode, an anode, and an organic layer. The organic layer includes one or more of a hole injection layer, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron transport layer, or an electron injection layer. At least one layer of the organic layer includes the compound of the structural formula (I).

Abstract: A luminescent material made of platinum complex having NNCN tetradentate ligand, and applications thereof in light emitting diode are provided. The platinum complex is a compound has a structure as shown in Formula (I). When applied to an organic light emitting diode, and has the potential to be applied to the field of organic electroluminescent devices. An organic electroluminescent device is further provided, which includes a cathode, an anode and an organic layer. The organic layer is selected from the group consisting of an electron hole injection layer, an electron hole transport layer, a luminescent layer, an electron hole blocking layer, an electron transport layer, an electron injection layer, and any combination thereof. At least one of the organic layers contains a compound represented by structural formula (I).

Abstract: The present application relates to a high-efficiency divalent platinum complex. The present application further provides an organic electroluminescent device, including a cathode, an anode, and an organic layer. The organic layer includes one or more of a hole injection layer, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron injection layer, or an electron transport layer. At least one layer of the organic layer includes a compound of formula (I).

Abstract: The present invention relates to a heterocyclic modified platinum complex containing an ONCN tetradentate ligand, which has a structure as shown in Chemical Formula (I). The complex is used in organic light-emitting diodes, has a relatively low driving voltage and relatively high luminous efficiency, can significantly prolong the service life of a device, and has the potential for application in the field of organic electroluminescent devices. The present invention further provides an organic electroluminescent device including a cathode, an anode and an organic layer, the organic layer includes one or more layers of a hole injection layer, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron transport layer and an electron injection layer, and at least one layer in the organic layer contains the compound as shown in Structural Formula (I).

Abstract: A display panel includes a base substrate, an active pattern layer and a first conductive layer. The active pattern layer is disposed on the base substrate, and includes at least one first conductive connection line. The first conductive layer is disposed on a side of the active pattern layer away from the base substrate. The first conductive layer includes at least one connection line extending along a first direction, and a plurality of initialization signal lines arranged along the first direction and extending along a second direction. An end of each initialization signal line is coupled to a connection line in the at least one connection line. The first direction and the second direction intersect. A first conductive connection line in the at least one first conductive connection line is coupled to at least two initialization signal lines that are coupled to a same connection line.

Abstract: The present invention relates to a binuclear metal platinum complex and application thereof. The binuclear metal platinum complex is a compound having a structure of a chemical formula (I). The compound is applied in an organic light-emitting diode, has lower driving voltage and higher luminous efficiency, and can significantly improve the service life of a device, thus having the potential of being applied in the field of display panels. The present invention further provides an organic light-emitting diode including a cathode, an anode, and an organic layer. The organic layer is one or more of a hole injection layer, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer. At least one of the organic layers includes the compound of the structural formula (I).

Abstract: Provided are a display panel, a manufacturing method therefor, and a display device. The display panel comprises a hole in a display region and comprises: a substrate; a drive circuit layer comprising a thin film transistor; a wire, connected to the thin film transistor; one or more isolation members surrounding the hole, disposed on the side of the drive circuit layer, and located between the wire and the hole, at least one isolation member comprising a first and a second isolation layer, and an orthographic projection of a surface of the first isolation layer away from the substrate is inside that of the second isolation layer on the substrate; a planarization layer, on the side of the drive circuit layer and covering the wire; and an anode, on the side of the planarization layer and connected to the wire by a via penetrating the planarization layer.

Abstract: 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.

Abstract: The present invention relates to a bivalent platinum complex having 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. Furthermore, a platinum complex molecule having an ONCN tetradentate ligand has the advantages of simple synthetic steps, relatively easy coordination and the like, and has may modifiable sites, which can be used for adjusting PL light emission wavelengths and thermal stability. The steric hindrance added by a 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.

Abstract: A display substrate includes a cut-out area; a display region; and an isolation region including an isolation pillar and at least two packing dams; a base substrate; a barrier layer; a buffer layer; a first gate insulation layer; a second gate insulation layer; and an interlayer insulation layer. The isolation pillar is formed of a portion of the barrier layer, a portion of the buffer layer, a portion of the first gate insulation layer, a portion of the second gate insulation layer, and a portion the interlayer insulation layer. A side of the side end surface proximal to the substrate is indented inward compared to the side facing away from the substrate. A light emitting layer on the side of the structural layer facing away from the substrate is discontinuous at least at a position having an indented structure.