52results about How to "Improve electron-attracting ability" patented technology

The invention discloses an azaxanthone compound and its application in an organic electroluminescent device. The compound takes azaxanthone as the core, and has the properties that it is not easy to crystallize and aggregate between molecules, and has a good composition. Membrane characteristics. When the compound of the present invention is used as the main material of the light-emitting layer of the OLED light-emitting device, the current efficiency, power efficiency and external quantum efficiency of the device are greatly improved; at the same time, the life of the device is significantly improved.

The invention provides a method for cracking sludge by virtue of singlet oxygen and relates to a sludge cracking method. The method comprises the steps of adding a catalyst pyroracemic acid and antioxidants peroxides (peroxymonosulfate and percarbonate) into to-be-cracked sludge, stirring to react, pumping supernate of the cracked sludge back into an aeration tank, and carrying out treatments including dehydration and the like on the residual sludge. According to the method, a bisepoxy intermediate is generated by catalyzing peroxides by virtue of pyroracemic acid and further reacts with peroxides to generate singlet oxygen and pyroracemic acid, peroxides are continuously catalyzed by generated pyroracemic acid, and generated pyroracemic acid plays a role of circular catalysis during reaction, generated high-activity singlet oxygen is capable of damaging the structure of sludge floc and releasing bound water, improving the dehydration performance of sludge and damaging the cell structures of microorganisms. The method has the characteristics that the sludge treatment effect is good, toxic and harmful products are not generated, a required carbon source is provided for sewage treatment, and the catalyst pyroracemic acid and the antioxidants peroxides are environmentally friendly and safe and have no toxic and side effects.

The invention relates to a water treatment method for decontamination by catalyzing peroxide to generate singlet oxygen, which relates to a water treatment method. The invention provides a water treatment method for generating singlet oxygen by catalyzing peroxide to remove pollution. The water treatment method of the present invention: add the catalyst pyruvic acid and the oxidizing agent peroxide (peroxymonosulfate, percarbonate) into the water to be treated, and stir. In the water treatment method of the present invention, pyruvic acid catalyzes the peroxide to produce a double epoxy intermediate, and the double epoxy intermediate further reacts with the peroxide to produce singlet oxygen and pyruvic acid, and the generated pyruvic acid continues to catalyze the peroxide, and in the reaction It plays the role of cyclic catalysis, and the generated highly active singlet oxygen degrades organic matter to achieve the purpose of decontamination. The invention has high pollution removal efficiency, does not produce toxic and harmful by-products, the catalyst pyruvic acid and the oxidant peroxide are green, safe, and has no toxic and side effects, the reaction is less affected by water conditions, can be applied on a large scale, and is more suitable for emergency treatment.

The invention provides a seven-membered nitrogen-containing heterocyclic derivative and an organic electroluminescence device thereof, which relate to the technical field of organic photoelectric materials. The compound connects a seven-membered nitrogen-containing heterocyclic group derived from triphenylamine containing a double bond to a six-membered conjugated ring containing at least one nitrogen atom. First, the seven-membered nitrogen-containing heterocyclic ring has a large steric hindrance, and the compound The thermal stability of the compound is good; the seven-membered nitrogen-containing heterocyclic ring is connected with a six-membered conjugated ring containing at least one nitrogen atom, so that the compound has enhanced electron-absorbing ability and good electron transport ability when an appropriate voltage is applied; the seven-membered nitrogen-containing heterocycle The intermolecular aggregation of nitrogen heterocyclic derivatives is small, and the film-forming property is good. The compound is used as an electron transport layer material and a light-emitting layer host material in organic electroluminescent devices, which can reduce the driving voltage of the device, and can also significantly improve the luminous efficiency and life of the device. It is a kind of organic electroluminescent device with excellent performance Material.