169results about How to "Strong electron-withdrawing" patented technology

The invention relates to an epoxy resin fullerene composite material and a preparation method thereof. The materials of the epoxy resin fullerene composite material include fullerene, epoxy resin and a curing agent. The epoxy resin fullerene composite material has the advantages of remarkably increasing the volume resistivity and breakdown voltage of a polymer matrix, inhibiting the injection of space charges, decreasing dielectric constant and loss, and improving the electrical aging property of the epoxy resin, and moreover, the mechanical strength and toughness of the epoxy resin are also increased to a certain degree.

The invention relates to a boron-containing organic compound and application of the boron-containing organic compound to an OLED device. The structure of the compound is shown as a general formula (1), the whole molecule of the compound is a large rigid structure, and the introduction of substituent groups reduces the planarity of a material, so the steric hindrance of the material is increased, the material is not easy to rotate, and a three-dimensional space structure is more stable; and therefore, the compound has higher glass transition temperature and molecular thermal stability. In addition, the HOMO and LUMO distribution positions of the compound are separated from each other, so the compound has appropriate HOMO and LUMO energy levels; and therefore, after the compound is applied to the OLED device, the luminous efficiency of the device can be effectively improved, and the service life of the device can be effectively prolonged.

The invention discloses a preparation method and application of modified polysiloxane solid polymer electrolyte membrane (SPE). The SPE is prepared from poly(methylhydrosiloxane) (PMHS), nitrile imidazole ionic liquid (IL-CN), allyl terminated polyether (PEO), lithium salt and a cross-linking agent. The preparation method comprises the following steps: 1, sufficiently mixing the PMHS, PEO and IL-CN in anhydrous toluene, adding a chloroplatinic acid catalyst, and performing reaction for a certain period of time at certain temperature; 2, mixing an appropriate amount of the lithium salt, the cross-linking agent and a catalyst into a product in the step 1 in anhydrous acetonitrile, sufficiently stirring, pouring a solution into a polytetrafluoroethylene die, and performing heating, cross-linking and solidifying in a vacuum drying oven, so as to obtain the all-solid-state polymer polymer electrolyte membrane. An obtained electrolyte has high conductivity, wide electrochemical stability window and high stability, and can be applied to lithium secondary batteries.

The invention relates to a graphene doping agent, a graphene doping process and the application of a doped graphene material. A doping process can be completed by using processes such as a dry process (including thermal evaporation and sputtering) or a wet process (including spinning, electrochemical deposition and solution soaking). By virtue of the graphene doping agent, the sheet resistance of a graphene film with a substrate is reduced from about 830 ohms to about 530 ohms on the premise that the transmittance of graphene in a visible light range is not influenced, the conductivity is improved, and the stability is high. By the adoption of the wet process or the dry process for doping, the advantages of controllability in plating thickness, controllability in doping amount, high uniformity and the like are achieved; and by the adoption of an annealing process, the doping agent is more compactly combined with the graphene, the doped graphene material is unlikely to be influenced by the environment when being subsequently used.

The invention discloses a boron-containing multi-element heterocyclic organic compound and an application thereof to an OLED (organic light-emitting diode) device. The compound utilizes benzo six-membered rings as a core, and boron is located on the six-membered ring in the center. The compound has the characteristics that molecules are not prone to crystallization and aggregation and film-formingproperty is good. When the compound is utilized as a luminous layer material of the OLED device, current efficiency, power efficiency and external quantum efficiency of the device are greatly improved; besides, the service life of the device is obviously prolonged.

The invention discloses a heterocyclic compound with xanthone as a core and a preparation method and applications thereof, and belongs to the technical field of semiconductors. The structure of the compound provided by the invention is represented by a general formula (I) shown in the description. The invention also discloses the preparation method and the applications of the compound. The compound of the invention has high glass transition temperature and molecular thermal stability and has a suitable HOMO and LUMO energy leves, has a singlet-triplet energy level difference ([delta]Est), andcan be used as a doping material of a light emitting layer of an organic electroluminescent device, thereby improving the luminous efficiency and service life of the device.

The invention relates to the technical field of organic light-emitting display, particularly discloses an organic material of a compound containing a multi-heterocyclic structure, and also discloses application of the organic material in an organic light-emitting device. The compound containing the multi-heterocyclic structure is shown as general formula (I), can be applied to the field of organicelectroluminescence, and can be used as an electron transport material. The compound with the structure provided by the invention is applied to an OLED device, and the device has the advantages of low driving voltage and high luminous efficiency.

The invention belongs to the field of photoelectronic materials, and discloses a thiophene organic semiconductor material and a preparation method and application thereof. The copolymer has a general formula (P), wherein in the formula, x+y is equal to 2; x is more than or equal to 1, and y is more than 0 and is less than 1; n is more than 1 and is less than or equal to 100; R1 and R4 are alkyl having 1 to 20 carbon atoms; and R2 and R3 are hydrogen and alkyl having 1 to 20 carbon atoms or phenyl substituted by alkyl having 1 to 20 carbon atoms or alkoxy having 1 to 20 carbon atoms or are thephenyl. Compared with the prior art, the invention has the advantages that: the organic semiconductor material is prepared by polymerizing a cyclopentadiene [2,1-b:3,4-b'] bithiophene unit, a thiophene unit and a quinoxaline unit, so the carrier mobility of the organic semiconductor material is increased, spectral response is broadened, and the organic semiconductor material has high carrier transmission property and electrochemical property; and the alkyl and the like can be introduced by a simple and convenient method to improve solubility. The preparation process of the semiconductor material is simple and easy to operate and control, and is suitable for industrial production.

The invention discloses a strong two-photon absorption conjugated polymer based on a S,S-dioxo-dibenzothiophene unit and a preparing method and application of the strong two-photon absorption conjugated polymer. The strong two-photon absorption conjugated polymer based on the S,S-dioxo-dibenzothiophene unit is prepared through a Suzuki reaction. The strong two-photon absorption conjugated polymerbased on the S,S-dioxo-dibenzothiophene unit has high electronegativity, and has a high capability of withdrawing electrons; meanwhile, the polymer has good planarity, and is connected with a strong electron donator, which is beneficial to enhancing of the intramolecular charge transfer effect and improvement of two-photon absorption performance of the conjugated polymer. The strong two-photon absorption conjugated polymer has a large development potential and a great prospect in the field of non-linear optics and the field of two-photon fluorescence imaging.

The invention relates to an organic compound taking diboron as a core, a preparation method of the organic compound and application of the organic compound to an organic light-emitting device. The structure of the compound is shown as a general formula (1); the whole molecule of the organic compound with diboron as the core is of a large rigid structure, the introduction of branched chains reducesthe planarity of the material, the steric hindrance of the material is increased, the material is not easy to rotate, and the three-dimensional space structure is more stable, so that the compound has high glass transition temperature and molecular thermal stability; in addition, HOMO and LUMO distribution positions of the compound are separated from each other, so that the compound has appropriate HOMO and LUMO energy levels; therefore, after the compound is applied to the OLED device, the luminous efficiency of the device can be effectively improved, and the service life of the device can be effectively prolonged.

The invention discloses a boron-containing organic electroluminescent compound and an application thereof on organic electroluminescent devices, and belongs to the technical field of semiconductors. The boron-containing organic electroluminescent compound has a structure shown in a general formula (1). The invention also discloses an application of the boron-containing organic electroluminescent compound on organic electroluminescent devices. When the compound is used as a luminescent layer material of an organic electroluminescent device, the current efficiency, the power efficiency and the external quantum efficiency of the device are greatly improved; and meanwhile, the service life of the device is obviously prolonged.

The invention provides a naphthalene tetracarboxyldiimide copolymer containing a thienopyrroledione unit. The general molecular formula of the copolymer is as described in the specification. In the general molecular formula, n is an integer in a range of 5 to 100, R1 is a C1-20 alkyl group or a constitutional unit as described in the specification, R2, R3 and R4 are selected from the group consisting of alkyl groups for H and C1 to C20 and alkoxy groups for C1 to C20, and R5, R6 and R7 are selected from the group consisting of alkyl groups for H and C1 to C20. Thienopyrroledione is an excellent acceptor material. The structure of a naphthalene tetracarboxyldiimide compound includes centronucleus of polycyclic aromatic hydrocarbon and an imide group with an electron-withdrawing characteristic, and an imide unit with strong electron-withdrawing capability in the compound can reduce the energy levels of HOMO and LUMO in a material, which is beneficial for injection of electrons. The naphthalene tetracarboxyldiimide copolymer containing the thienopyrroledione unit integrates the advantages of thienopyrroledione and the naphthalene tetracarboxyldiimide compound, has excellent charge transfer performance and can improve energy conversion efficiency of semiconductor devices when applied in semiconductor devices like a solar cell.

The invention relates to a boron-containing organic compound and application thereof on organic electroluminescent devices, and belongs to the technical field of semiconductors. The structure of the provided compound is shown as a general formula (1). The invention also discloses an application of the boron-containing organic compound on organic electroluminescent devices. The compound is composedof boron groups, the rigidity of the boron groups is high, and the boron-containing organic compound has the advantages that molecules are not prone to crystallization or aggregation, and the film-forming property is good. When the boron-containing organic compound is used as a luminescent layer material of an organic electroluminescent device, the current efficiency, the power efficiency and theexternal quantum efficiency of the device are greatly improved; and meanwhile, the service life of the device is obviously prolonged.

The invention relates to an organic semiconductor material containing naphtho-dithiadiazole and naphthalene tetracarboxylic diimide, and a preparation method and application of the organic semiconductor material. The organic semiconductor material containing naphtho-dithiadiazole and naphthalene tetracarboxylic diimide has the following structural formula as shown in the specification, wherein n is an integer in a range from 10 to 100; R1 is C1-C20 alkyl; R2, R3 and R4 are H, C1-C2 alkyls or C1-C20 alkoxy groups; R5 and R6 are H or C1-C20 alkyls. The organic semiconductor material containing naphtho-dithiadiazole and naphthalene tetracarboxylic diimide integrates advantages of naphtho-dithiadiazole and naphthalene tetracarboxylic diimide, has good charge transport performance, and can improve energy conversion efficiency of semiconductor devices when being used for the semiconductor devices, such as a solar battery.

The invention discloses a chain-shaped fluoroester compound and the use thereof as an electrolyte solvent of a lithium ion battery. The chain fluorinated ester compound comprises a chain fluorinated carbonate compound and a chain fluorinated carboxylic acid ester compound, wherein the chain fluorinated ester compound improves the overall oxidation decomposition voltage of the electrolyte, has goodwettability, can optimize the electrode interface, reduce the impedance between the interfaces, and improves the low-temperature performance. The addition of the chain fluoroester electrolyte solventof the invention improves the high-temperature resistance and high-pressure resistance stability of the lithium ion battery, improves the rate performance of the battery, and is a novel second-generation lithium ion battery solvent.

The invention discloses a limited geometric configuration metallocene catalyst as well as a preparation method and application thereof. The preparation method comprises the steps of taking 2-pyrrole formaldehyde or a complex derivative thereof as a raw material, synthesizing fulvene with indene, preparing a ligand through lithium aluminum hydride reduction, and then obtaining a high-yield catalysttaking titanium as an active center by using an amine elimination method. The catalyst can catalyze olefin homopolymerization and copolymerization. Pyrrole N heterocycle replaces tert-butylamine to serve as an electron donor, the molecular structure of the catalyst is symmetrical, and the insertion rate of alpha-olefin in the polymer is increased. The catalyst disclosed by the invention is simplein synthetic route, easily available in raw materials and low in cost, the yield of the catalyst is greatly improved, and the catalyst has good olefin polymerization catalytic activity.

The invention relates to the technical field of organic electroluminescent display, particularly discloses an organic material of a P-containing polyheterocyclic structure compound, and further discloses an application of the organic material in an organic electroluminescent device. The P-containing polyheterocyclic structure compound provided by the invention is shown as a general formula (I), can be applied to the field of organic electroluminescence, and can be used as an electron transport material. The compound with the structure provided by the invention is applied to an OLED device, andthe device has the advantages of low driving voltage and high luminous efficiency.