Abstract: The present invention provides a blue light thermally activated delayed fluorescence (TADF) material, a preparation method thereof, and an electroluminescent device. The blue TADF material achieves high luminous efficiency and TADF efficiency to realize excellent solubility by attaching an alkyl chain for increasing solubility to a periphery of the blue light TADF material, and by attaching a tert-butylcarbazole unit having a high energy state to an end of the alkyl chain of the blue light TADF material, thereby allowing the material to be processed by solution spin coating, and the terminal carbazole can act as a host, enabling non-doping of a luminescent layer while effectively avoiding phase separation.

Abstract: The present invention provides an organic compound represented by: an organic light emitting diode and an organic light emitting display device using the organic compound. The organic compound of the present invention is capable of reducing a driving voltage of an organic light emitting diode and improving an emitting efficiency and a lifetime of the organic light emitting diode and the organic light emitting display device including the organic compound.

Abstract: A composition for a heat cycle system and a heat cycle system employing the composition are provided. The composition has favorable lubricating properties and contains a working fluid for heat cycle and a refrigerant oil. The working fluid has a low global warming potential and can replace R410A. The working fluid contains an unsaturated fluorinated hydrocarbon compound having a specific structure. The refrigerant oil has a breakdown voltage of at least 25 kV, a hydroxyl value of at most 0.1 mgKOH/g, and a kinematic viscosity at 40° C. of from 5 to 200 mm2/s and a kinematic viscosity at 100° C. of from 2 to 30 mm2/s.

Abstract: An object is to provide an organic photoelectric conversion element having high durability. The present invention provides an organic photoelectric conversion element having an active layer between a cathode and an anode, characterized in that, the organic photoelectric conversion element includes a layer including a cured product obtained by curing a thermosetting resin composition between the anode and the active layer, and a transmittance of light with a wavelength of 380 nm to 780 nm is 10% or higher. The present invention provides the organic photoelectric conversion element in which the thermosetting resin composition includes one or more selected from the group consisting of polythiophene and derivatives thereof and a polymer compound including a repeating unit having an aromatic amine residue.

Abstract: The present disclosure relates to a process to reduce total acid number (TAN) of a heat transfer fluid. The process comprises contacting the heat transfer fluid with an adsorbent composition at a temperature in the range of 50° C. to 350° C. and a pressure in the range of 1 bar to 10 bar to obtain a treated heat transfer fluid having total acid number (TAN) in the range of 0.003 to 0.03 and pH in the range of 6 to 7.5, wherein the adsorbent composition is provided in a fixed bed and the heat transfer fluid is passed through the fixed bed comprising the adsorbent composition at a liquid hourly space velocity (LHSV) in the range of 0.5 per hour to 10 per hour.

Abstract: The present invention relates to certain fluorenes, to the use of the compounds in an electronic device, and to an electronic device comprising at least one of these compounds. Furthermore, the present invention relates to a process for the preparation of the compounds and to a formulation and composition comprising one or more of the compounds.

Abstract: The invention relates to the use of a composition that comprises at least one hydrochlorofluoroolefin, at least one mineral oil, and air, with the air being provided in a weight concentration of less than 1%, relative to the mass of the mixture of said at least one hydrochlorofluoroolefin and air, said composition being exposed to a maximum change-of-state temperature greater than or equal to approximately 100° C.

Abstract: The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a fluoroolefin and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents.

Abstract: The present invention is a solvent composition including: a solvent including 1-chloro-2,3,3-trifluoro-1-propene; and at least one type of stabilizer selected from a group consisting of phenols, ethers, epoxides, amines, alcohols, and hydrocarbons, and is a solvent composition which is excellent in solubility of various organic substances and has no adverse effect on a global environment, and is excellent in stability, and this solvent composition can be used for a wide range of industrial uses such as cleaning, coating uses, and a heat transfer fluid.

Abstract: Provided are an organic semiconductor element including an organic semiconductor film that includes a polymer having a repeating unit represented by the following Formula (1), the polymer, and an organic semiconductor composition and an organic semiconductor film including the polymer. In the formula, Y1 represents O, S, or Se. R11 to R14 each independently represent a substituent. a and b each independently represent an integer of 0 to 3, and r and s each independently represent an integer of 0 to 2. A10 represents an aromatic heterocyclic group. m10 represents an integer of 1 to 12.

Abstract: An organic light-emitting device including a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode; and an electron transport region between the emission layer and the second electrode; wherein the electron transport region includes a condensed cyclic compound represented by Formula 1 below:

Abstract: A compound including a first ligand LA of Formula I, useful as an emitter in OLEDs is disclosed.

Abstract: The present invention relates to compounds containing fused dibenzo more-than-six-membered heterocycles or azaheterocycles. These compounds may be useful as host materials for phosphorescent electroluminescent devices.

Abstract: The present invention provides a process for preparing 3,3,3-trifluoropropene (1243zf), the process comprising: (a) fluorinating CCI3CH2CH2CI (250fb) to produce a reaction product comprising CF3CH2CH2CI (253fb) in the liquid phase in a first reactor, using HF as the fluorinating agent; and (b)(i) dehydrohalogenating 253fb to produce 1243zf in the vapour phase in the presence of a catalyst in a second reactor; or (b)(ii) dehydrohalogenating 253fb to produce 1243zf in a second reactor, wherein the reaction product comprising 253fb produced in step (a) has subjected to one or more purification steps before step (b). The present invention also provides an azeotropic or near-azeotropic composition comprising HF and 253fb.

Abstract: An object of the present invention is to provide, as a working fluid to be used for a heat cycle system, a working fluid for heat cycle that has cycle performance replaceable with that of R410A, and at the same time, has a small burden on an apparatus, low flammability, suppressed self-decomposition, and less effect on global warming, and therefore, is usable stably even if leaked, a composition for heat cycle system containing the same, and a heat cycle system using the composition. The working fluid for heat cycle contains trifluoroethylene, difluoromethane, and at least one selected from 1,1-difluoroethane, fluoroethane, propane, propylene, carbon dioxide, 2,3,3,3-tetrafluoropropene, and (E)-1,3,3,3-tetrafluoropropene at mass ratios satisfying predetermined expressions and at a ratio of the total content to be 90 to 100 mass % relative to the total amount of the working fluid and has a temperature glide of 10° C. or less.

Abstract: Disclosed are compositions comprising HCFC-243db, HCFO-1233xf, HCFC-244db and/or HFO-1234yf and at least one additional compound. For the composition comprising 1234yf, the additional compound is selected from the group consisting of HFO-1234ze, HFO-1243zf, HCFC-243db, HCFC-244db, HFC-245cb, HFC-245fa, HCFO-1233xf, HCFO-1233zd, HCFC-253fb, HCFC-234ab, HCFC-243fa, ethylene, HFC-23, CFC-13, HFC-143a, HFC-152a, HFC-236fa, HCO-1130, HCO-1130a, HFO-1336, HCFC-133a, HCFC-254fb, CHF?CHCl, HFO-1141, HCFO-1242zf, HCFO-1223xd, HCFC-233ab, HCFC-226ba, and HFC-227ca. Compositions comprising HCFC-243db, HCFO-1233xf, and/or HCFC-244db are useful in processes to make HFO-1234yf. Compositions comprising HFO-1234yf are useful, among other uses, as heat transfer compositions for use in refrigeration, air-conditioning and heat pump systems.

Abstract: The present invention relates to metal complexes, to compositions and formulations comprising these complexes, and to devices comprising the complexes or compositions.

Abstract: The invention relates to novel organic semiconducting polymers, to methods for their preparation and educts or intermediates used therein, to compositions containing them, to the use of the polymers and compositions as organic semiconductors in, or for the preparation of, organic electronic (OE) devices, especially organic photovoltaic (OPV) devices, perovskite-based solar cell (PSC) devices, organic photodetectors (OPD), organic field effect transistors (OFET) and organic light emitting diodes (OLED), and to OE, OPV, PSC, OPD, OFET and OLED devices comprising these polymers or compositions.

Abstract: The present invention provides a process for the preparation of a multimodal polyethylene comprising: (i) polymerising ethylene and optionally an ?-olefin comonomer in a first polymerisation stage to produce a first ethylene polymer; and (ii) polymerising ethylene and optionally an ?-olefin comonomer, in the presence of said first ethylene polymer, in a second polymerisation stage, wherein the first and second polymerisation stages are carried out in the presence of an unsupported metallocene catalyst and each polymerisation stage produces at least 5% wt of the multimodal polyethylene, and the multimodal polyethylene has a multimodal molecular weight distribution, a molecular weight of at least 50,000 g/mol and a bulk density of at least 250 g/dm3, and wherein a solution of the unsupported metallocene catalyst in a solvent is employed.

Abstract: A thermally conductive resin composition is disclosed herein. The thermally conductive resin composition exhibits high thermal conductivity while having excellent handling properties. In an embodiment, a resin composition includes a resin component and 600 parts by weight or more of a thermally conductive filler relative to 100 parts by weight of the resin component. The thermally conductive filler comprise 30 to 50 wt % of a first thermally conductive filler having a D50 particle diameter of 35 ?m or more, 25 to 45 wt % of a second thermally conductive filler having a D50 particle diameter in a range of 15 ?m to 30 ?m, and 15 to 35 wt % of a third thermally conductive filler having a D50 particle diameter of 1 to 4 ?m, based on the total weight of the thermally conductive filler.