45results about How to "Extended conjugate length" patented technology

The invention belongs to the field of organic electroluminescent material, and in particular relates to polyaryl substituted pyridine derivatives and a synthetic method thereof, as well as application to preparing organic electroluminescent devices by using materials of the polyaryl substituted pyridine derivatives. Through molecular design, the synthetic method introduces large substituting groups which have rigid structures to ensure that the large substituting groups are not easy to form a group excited compound, inhibits the crystallization processes of the large substituting groups, improves the film forming properties of the large substituting groups, and increases charge transfer performances of the large substituting groups; at the same time, destroy of molecular co-planarity makes the large substituting groups emit peak blue shift, so as to achieve the aim of improving the properties of the devices. The polyaryl substituted pyridine derivatives comprise a structural formula as above.

The invention discloses pyridoimidazole derivatives and application thereof in organic light-emitting devices (OLEDs). The structural formula of the compounds is shown in the formula I in the specification. As organic light-emitting materials, the compounds can be used for preparing the OLEDs. The OLEDs comprise light-emitting layers, wherein the light-emitting layers contain at least a pyridoimidazole derivative to serve as the main material and contain pyridoimidazole derivatives or a light-emitting layer formed by the pyridoimidazole derivatives, pyridoimidazole derivatives or an electron transport layer formed by the pyridoimidazole derivatives and pyridoimidazole derivatives or a hole blocking layer formed by the pyridoimidazole derivatives. The invention further relates to equipmentcomprising the OLEDs. The pyridoimidazole derivatives provided by the invention have appropriate triplet energy levels and obviously improve energy utilization, and when the pyridoimidazole derivatives are used for preparing the OLEDs, the prepared devices have satisfactory brightness, current density and efficiency under high current density.

A tetraphenylsilane compound suitable as an organic hole-transport material is represented by a formula:

wherein each dashed line indicates an optional bond; and Ph¹, Ph², Ph³, Ph⁴, Ph⁵, Ph⁶, Ph⁷, Ph⁸, Ph⁹, and Ph¹⁰ are independently optionally substituted phenyl or phenylene.

The invention provides a novel compound and an organic electroluminescent device comprising the same. The present invention provides a novel compound represented by the following Formula 1 (as shown in the description) and an organic light emitting device including the above novel compound. In the above Formula 1, Ar is independently hydrogen, substituted or unsubstituted C<6> to C<30> Aryl, substituted or unsubstituted C<6>-C<30> heteroaryl, and at least one of the two is phenyl or pyridyl, and X is independently CR<1> or N, wherein R<1> is hydrogen, halogen, amino, nitrile Alkyl, nitro, substituted or unsubstituted C<1> to C<30> alkyl, substituted or unsubstituted C6 to C30 aryl, substituted or unsubstituted C2 to C30 heteroaryl, A and B, respectively substituted or unsubstituted C<6>-C<30> aryl, substituted or unsubstituted C<2>-C<30> heteroaryl).

The invention discloses polyaryletherketone containing an indole group and a preparation method of polyaryletherketone. The polyaryletherketone is shown in formula (I). The preparation method includes the following steps: under the protection of nitrogen, adding 4-hydroxyindole, a keto-group-containing difluoro monomer, a bisphenol monomer, a salt-forming agent, a solvent and methylbenzene in a reactor; stirring the mixture evenly, and conducting heating to increase the temperature to 130-140 DEG C for reaction for 3-4 hours; distilling off methylbenzene, and then increasing the temperature to 160-190 DEG C for continuous reaction for 4-6 hours; cooling the materials obtained after the reaction to room temperature, and pouring the materials in deionized water for sedimentation; conducting suction filtration to obtain a solid product, conducting extraction with methyl alcohol, and drying the solid product obtained by suction filtration to obtain polyaryletherketone containing the indole group. The polyaryletherketone containing the indole group is good in thermal stability, relatively high in glass transition temperature, good in solubility and unique in optical property, and can be used in battery diaphragms, optoelectronic devices, electrode materials, inertial confinement fusion film targets and other fields. Please see the formula in the specification.

The invention belongs to the field of organic electron transmission/hole blocking organic materials for organic electroluminescent devices, and particularly relates to a polyaryl-substituted pyridine derivative used in the organic electron transmission materials and/or the organic hole blocking organic materials, a synthetic method as well as the usage of the polyaryl-substituted pyridine derivative material for preparing an organic electroluminescent device. By a molecular design, a plurality of large substituents with rigid structures are introduced, which causes an exciplex not to easily form in the derivative, inhibits the crystallization course thereof, improves the film forming thereof and improves the charge transfer property thereof; meanwhile, the breakage of the molecular coplanarity causes a blue shift of the emission peak of the derivative, thus achieving the purpose of improving the performance of the device. The polyaryl-substituted pyridine derivative comprises the structure.

The invention discloses a triphenylamine organic dye and a synthesis method thereof. The chemical structure of the triphenylamine organic dye is as shown in a general formula (1). In the formula (1),R<1> is selected from hydrogen or styryl, R<2> is selected from hydrogen or styryl, and the following structure is a quinoxaline derivative. The triphenylamine organic dye provided by the invention has a long conjugated D-pi-A structure, and meanwhile, molecules contain cyano groups and carboxyl, and the electrondrawing group is cyanoacetic acid. The triphenylamine organic dye can be used as a solar cell sensitizer, and has a good application prospect in dye-sensitized solar cells.

The present specification provides a photoactive layer including an electron accepting material and an electron donating material, an organic photovoltaic cell including the same, and a method of manufacturing the organic photovoltaic cell, which includes treating the electron accepting material and the electron donating material by a non-solvent.

The invention provides a polymer, a preparation method thereof and an organic polymer solar battery. The polymer is shown in a formula (I) or a formula (II). Compared with an existing conjugated polymer, the polymer which is shown in the formula (I) or the formula (II) has the advantages that a condensed ring unit of dithieno carbazole serves as a donor and is low in reorganization energy and good in pi electron delocalization; by introducing the condensed ring unit into a conjugated compound, the reorganization energy of the polymer can be effectively reduced, and the conjugation length of the polymer is increased, so that the mobility of the polymer can be improved, and an optical band gap of the polymer is reduced; the optical band gap is reduced to cause the red shift of an absorption band of the polymer, and absorption spectra are matched with solar spectra. Therefore, by the adoption of the polymer, the spectrum absorption range of the polymer can be expanded, and the hole mobility can be improved; fluoro-isoindigo serves as a receptor, so that the highest occupied molecular orbital (HOMO) energy level of the polymer can be reduced, and the open-circuit voltage of the polymer solar battery is improved.

The invention discloses quinolone derivatives and preparation method and application thereof. The structural formula of the compounds is shown in the formula I in the specification. As organic light-emitting materials, the compounds can be used for preparing organic light-emitting devices (OLEDs). The OLEDs comprise light-emitting layers, wherein the light-emitting layers contain at least a quinolone derivative to serve as the main material and contain quinolone derivatives or a light-emitting layer formed by the quinolone derivatives, quinolone derivatives or an electron transport layer formed by the quinolone derivatives and quinolone derivatives or a hole blocking layer formed by the quinolone derivatives. The invention further relates to equipment comprising the OLEDs. The quinolone derivatives provided by the invention have appropriate triplet energy levels and obviously improve energy utilization, and when the quinolone derivatives are used for preparing the OLEDs, the prepared devices have satisfactory brightness, current density and efficiency under high current density. The formula I is shown in the specification.

The invention particularly relates to polyaryl-substituted pyridine derivative, a synthetic method thereof and the application of the polyaryl-substituted pyridine derivative to preparation of organic electroluminescent devices, belonging to the field of electroluminescent material. According to molecular design, large substitutional groups with rigid structures are introduced, so that the derivative has small possibility of forming the exciplex, the crystallization process of the derivative is inhibited, the film forming property of the derivative is improved, and the electric charge transmission property of the derivative is improved. Meanwhile, the modular coplanarity is damaged to cause emission peak hypochromatic shift, and the purpose of improving device property is achieved. The polyaryl-substituted pyridine derivative comprises the following structure.

The invention belongs to the fields of organic electronic transmission/hole barrier materials in organic electroluminescent devices, and particularly relates to polyaryl substituted pyridine derivatives for organic electronic transmission and/or hole barrier materials, a synthetic method thereof, and applications of making organic electroluminescent devices from the polyaryl substituted pyridine derivative materials. Through molecular design, the invention introduces some large substituting groups with rigid structures, so that exciplexes can not easily be formed and the crystallization process is inhibited, thereby improving the film forming property and enhancing the charge transmission performance; and meanwhile, the destruction of the molecular coplanarity enables the emission peak tomake a blue shift, thereby achieving the goal of improving the device performance. The polyaryl substituted pyridine derivatives of the invention comprise the following structures.

The invention discloses polyether sulfone with a benzotriazole group, as shown in a formula (I). A preparation method of polyether sulfone with the benzotriazole group comprises the following steps: in the presence of nitrogen, sequentially putting 4-hydroxy benzotriazole, a difluoro monomer with sulfuryl, a salt-forming agent, a solvent and methylbenzene into a reactor, uniformly stirring and mixing, heating to 130-150 DEG C to react for 3-5 hours, steaming out methylbenzene, further heating to 170-190 DEG C to react for 3-8 hours, cooling reacted materials to the room temperature, pouring into deionized water, precipitating, performing suction filtering, further performing extraction on the obtained solid with methanol, and drying the solid product obtained from extraction, thereby obtaining polyether sulfone with the benzotriazole group. Polyether sulfone with the benzotriazole group, which is disclosed by the invention, is high in thermal stability and chemical stability and excellent in dissolubility, and a transparent high-strength film with relatively high proton conductivity can be prepared and can be applied to fields such as high-temperature proton exchange film fuel batteries, optoelectronic devices and electrode materials.

The invention discloses a dithioxanthone derivative, a preparation method thereof and an application in an electroluminescent device. The general structural formula of the dithioxanthone derivatives is shown in formula I and formula II: wherein, X is selected from a sulfur atom or a sulfone group; R ₁ , R ₂ , R ₃ , R ₄ and R ₅ Each independently selected from a hydrogen atom, an arylamino group of 6 to 30 carbon atoms, an aryl group of 6 to 30 carbon atoms, a substituted aryl group of 6 to 30 carbon atoms, a substituted aromatic group of 5 to 50 ring atoms heterocyclic group. In the present invention, oxidized and unoxidized dithioxanthone derivatives introduce a variety of electron-donating groups, realize effective donor-acceptor molecular design, and can effectively separate the highest occupied orbital energy level and the lowest empty orbital of molecules The energy level not only reduces the energy level difference between the singlet state and the triplet state, but also realizes the property of thermally activated delayed fluorescence, and realizes the emission of different colors. Applied to the light-emitting layer of an organic electroluminescent device, the device has excellent performance.

The invention belongs to the field of organic electron transport or cavitation block materials in organic electroluminescent devices, and more particularly relates to a multiaryl-substituted replace pyridine derivative for an organic electron transport and/or cavitation block material and a synthesis method thereof, and application thereof for preparing the organic electroluminescent devices. Theinvention can ensure that a plurality of big substituents with rigid structures are introduced to avoid forming exciplexes through molecular design; the crystallization course is limited; the film forming property is improved; the charge transmission performance is enhanced; and the blue shift of the emission peak simultaneously appears because of the destroy of molecular coplanarity to reach thepurpose of improving device performance. The multiaryl-substituted replace pyridine derivative comprises the following structures.