16results about How to "High fluorescence quantum efficiency" patented technology

The invention belongs to the field of organic electroluminescent materials, and discloses a blue light host material, a preparation method and an organic electroluminescent device. The structure of the blue light host material is as shown in a chemical formula I: # imgabs0 #. After the blue light host material provided by the invention is applied to the organic electroluminescent device, the driving voltage of the photoelectric device can be reduced, the luminous efficiency of the photoelectric device can be improved, and the service life of the photoelectric device can be prolonged.

The invention discloses a preparation method and application of a self-assembled copper nanocluster, and the preparation method comprises the following steps: dissolving a copper salt in an organic solvent to form a copper salt solution; the preparation method comprises the following steps: dissolving 4, 6-dimethyl mercaptopyrimidine in an organic solvent to form a 4, 6-dimethyl mercaptopyrimidine solution; adding the 4, 6-dimethyl mercaptopyrimidine solution into the copper salt solution, and stirring to obtain a mixed solution; centrifuging the mixed solution, discarding the supernate, and washing the precipitate; and adding water into the precipitate, and stirring to obtain the self-assembled copper nano-cluster. The preparation method of the self-assembled copper nano-cluster has the advantages that the preparation process is simple, and large-scale preparation can be achieved, and the prepared self-assembled copper nano-cluster is a novel nano-material and can be applied to catalysis, fluorescence (imaging) sensing, light-emitting diodes, electrochemical sensing, photoelectric conversion materials and biological medicine.

The invention relates to an organic compound, a mixture, a composition, a light-emitting device and a display panel, the chemical structural formula of the organic compound is as shown in a formula I, and Ar in the formula I is selected from a group as shown in a formula II: # imgabs0 #. The organic compound provided by the invention has high fluorescence quantum efficiency and enough high stability; when the organic compound is used as a luminescent material, the problems of aggregation quenching, light color shift, low quantum efficiency and the like can be solved, so that the luminous efficiency of a luminescent device can be effectively improved, and the service life of the luminescent device can be effectively prolonged.

The invention relates to the technical field of photovoltaic materials, in particular to a light conversion agent, a packaging adhesive film and a photovoltaic module. The preparation method of the light conversion agent comprises the following steps: heating and dissolving compound powder as shown in a formula I in a first solvent, cooling and crystallizing, and collecting a solid; the first solvent is prepared from at least one of ethyl acetate, N-methyl-2-pyrrolidone and acetone. The fluorescence quantum efficiency of the light conversion agent provided by the invention at room temperature can reach up to 97.12%, and compared with the existing light conversion agent, the light conversion agent provided by the invention has the advantages of high fluorescence quantum efficiency, good ultraviolet resistance and the like. According to the photovoltaic module prepared by adopting the packaging adhesive film disclosed by the invention, the power of the module can be remarkably improved, and the power attenuation of the module after ultraviolet radiation can be reduced.

The application belongs to the field of organic photovoltaics, and relates to a kind of polymer photovoltaic material and its preparation method and application. Double bromide compound A and double side tin compound B are subjected to Stille cross coupling reaction under the action of palladium catalyst, and the polymer photovoltaic material is obtained. The polymer photovoltaic material prepared by the application has an ultra-wide absorption spectrum range from 300 nm to 1200 nm. Such material exhibits an ultra-wide spectral range and a high extinction coefficient, and embodies excellent light absorption capacity. The strong light absorption capacity of the polymer photovoltaic material prepared by the application will help to improve the device efficiency of organic photovoltaics and improve the energy conversion efficiency of the device. The polymer photovoltaic material prepared by the application provides reference value for the design of functional materials in many fields of organic photoelectricity and solar energy utilization and conversion.

The invention discloses a double boron fused ring compound and an organic electroluminescent device containing the same, belonging to the field of semiconductor technology. The structure of the double boron fused ring compound is based on an aromatic ring or heteroaromatic ring with a specific number of carbon atoms as the core and fused with two boron-containing groups with the same skeleton, so that it has a narrow half-peak width, a high fluorescence quantum yield, a high glass transition temperature and molecular thermal stability, and suitable HOMO and LUMO energy levels, and can be used as a doping material for the light-emitting layer of an organic electroluminescent device, thereby improving the luminescent color purity and life of the device.

The present invention relates to a resonance type organic compound and application thereof, belonging to the field of semiconductor technology. The present invention provides a compound having a structure represented by general formula (1) and general formula (2). The compound of the present invention has a narrow half-peak width, a high fluorescence quantum yield, a high glass transition temperature and molecular thermal stability, and suitable HOMO and LUMO energy levels. When the compound is used as a doping material in a light-emitting layer material of an OLED light-emitting device, the current efficiency of the device is significantly improved, and the purity of the light-emitting color and the life of the device are also greatly improved.

The invention relates to the technical field of photovoltaic materials, in particular to a colored adhesive film, a preparation method thereof and a photovoltaic module. The colored adhesive film comprises a film main body and modified light conversion powder dispersed in the film main body, in the colored adhesive film, the mass fraction of the modified light conversion powder is 0.9%-4%; the modified light conversion powder is mainly prepared from the following raw materials in parts by weight: 100 parts of epoxy group modified polystyrene, 5-50 parts of light conversion powder, 0.1-5 parts of an organic amine catalyst and 50-200 parts of a solvent. The specific modified light conversion powder adopted in the colored adhesive film can exert the colored effect of epoxy group modified polystyrene, can absorb ultraviolet photons, improves the UV aging resistance of the adhesive film, and improves the fluorescence quantum efficiency of the colored adhesive film.

The present invention relates to a boron-containing organic compound containing a diphenyl-substituted naphthoxypyrrole structure and an organic electroluminescent device thereof, belonging to the field of semiconductor technology. The present invention provides a compound having a structure as shown in general formula (1): the compound of the present invention has a narrow half-peak width and a high fluorescence quantum yield. When used as a green light doping material in a light-emitting layer of an organic electroluminescent device, the current efficiency of the device is significantly improved, and the luminescent color purity and device life are also greatly improved.

The invention discloses a method for preparing a coating based on fluorescence-induced corrosion, belongs to the technical field of coatings, and is used to solve the technical problem in the prior art that the anti-corrosion coating coated on a metal substrate fails to warn of corrosion due to the change of pH value or the increase of metal ion content after corrosion. The invention comprises the following steps: epoxy resin, modified microcapsules, silane coupling agent, dispersant and thixotropic agent are uniformly mixed. The invention uses the color change of anthocyanin at different pH values ​​to coordinate the anthocyanin with a modified fluorescent material, so that the coating has a dual warning effect. The molecular structure of the modified fluorescent material is optimized and the interaction between molecules is utilized to further improve the sensitivity of the modified fluorescent material to metal ions and the fluorescence intensity.

The invention provides a blue light host material based on benzonaphthofuryl and anthryl and application of the blue light host material in an organic electroluminescent device, a novel compound serving as the blue light host material in a luminescent layer takes a rigid benzonaphthofuryl group and deuterated anthryl as a host structure, and D has lower activity than H, so that the blue light host material can be applied to organic electroluminescent devices. A C-D bond on anthryl is more stable than a C-H bond, the non-radiative transition of the compound is reduced, the structure is more stable, and the service life and efficiency of the material applied to a device are improved. Aryl is further introduced, a conjugated system can be effectively prolonged, the luminous efficiency can be improved, the HOMO energy level of the aryl is generally high, the LUMO energy level of the aryl is generally low, the energy gap (HOMO-LUMO energy range) of the aryl is large, electron transition is not prone to overspeed, and therefore high stability is achieved.

The invention belongs to the field of organic electroluminescent materials, and discloses a blue light host material, a preparation method and an organic electroluminescent device. The structure of the blue light host material is as shown in a chemical formula I: # imgabs0 #. After the blue light host material provided by the invention is applied to the organic electroluminescent device, the luminous efficiency of the photoelectric device is improved and the service life of the photoelectric device is prolonged while low driving voltage is maintained.

The application relates to an aryl boron compound, a preparation method and application thereof, and a pharmaceutical composition, which is used for tumor imaging, has high fluorescence quantum efficiency through intramolecular charge transfer, and can be connected to different antibodies through Q3 under a certain concentration, and can accurately target corresponding tumors according to different antibodies. The boron drug preparation can be used for boron neutron capture therapy to kill tumor cells. The compound has a better killing effect, and the compound is targeted to tumor cells through antigen-antibody interaction. After the boron-10 drug is gathered at a tumor site, neutron radiation is generated, a nuclear reaction is triggered to release alpha particles and 7 Li particles kill cells, and the ranges of the two particles are about 10 mu m. High-energy-density heavy ions break the double helix structure of DNA in tumor cells, so that the cells cannot be repaired and die completely, and the distance of 10 mu m avoids damage to normal cells and tissues.

The invention relates to the field of organic light-emitting materials, in particular to a blue thermally induced delayed fluorescence polymer as well as a preparation method and application thereof. According to the polymer with the structure shown in the formula 1, diphenyl silicon of the polymer is directly connected with acridine in a TADF light-emitting unit, sp3 hybridized silicon atoms can effectively break conjugation of a main chain of the polymer, and the triplet energy level is improved. When an alkyl substituent group is introduced to the ortho-position of a connecting site of diphenyl silicon and a TADF unit, the torsion angle of an aromatic ring can be increased, the triplet energy level is further improved, the energy level difference between the singlet state and the triplet state is reduced, and meanwhile, the increase of molecular rigidity inhibits non-radiative transition. Experimental results show that the polymer not only has a high triplet energy level, but also has high fluorescence quantum efficiency, and presents efficient blue thermally induced delayed fluorescence emission. In addition, the preparation method of the polymer provided by the invention is simple, and the obtained polymer has excellent solubility and film-forming property.

The application discloses an aggregation-induced emission material, a preparation method and application thereof, and belongs to the technical field of preparation of the aggregation-induced emission material. The aggregation-induced emission material prepared by the application is an organic small molecule with an aggregation-induced emission effect. The fluorescent solar concentrator prepared by using the aggregation-induced emission material overcomes the problem of low efficiency of the existing fluorescent solar concentrator, and especially overcomes the problem of great efficiency attenuation caused by the increase of the device size.

The invention discloses a boron-containing organic compound and an organic electroluminescent device prepared from the same, and belongs to the technical field of semiconductors. The structure of the organic compound is shown as a general formula (1), # imgabs0, and the compound provided by the invention has narrow half-peak width and high fluorescence quantum yield, and can be used as a luminescent layer green light doping material of an organic electroluminescent device, so that the luminescent color purity and efficiency of the device are improved.