843 results about "Phosphorescence" patented technology

The invention discloses a high-temperature airflow two-dimensional temperature field and velocity field synchronous measurement system and method based on laser-induced phosphorescence, and the system comprises phosphorescence particles, a low-frequency double-pulse laser, an image collection device, a synchronous controller, and an image processing device. The image processing device analyzes the gray intensity ratio of different wave band images acquired by the two PIV cameras at the same time, and combines a temperature response function calibrated by an experiment to realize inversion of a temperature field; meanwhile, a double-frame time-resolved image acquired by any PIV camera is subjected to cross-correlation calculation, particle displacement is extracted, and then a velocity field is reconstructed. According to the invention, synchronous acquisition of temperature and speed based on the same data source is realized, and the system has the remarkable advantages of simple structure, high measurement precision and wide application environment.

The invention relates to the technical field of polymer room-temperature phosphorescent materials, in particular to a self-repairing room-temperature phosphorescent elastomer based on waterborne polyurethane and a preparation method and application thereof, and the specific preparation steps include: 1) synthesis of self-repairing waterborne polyurethane and 2) preparation of a self-repairing room-temperature phosphorescent waterborne polyurethane elastomer material. A self-repairing waterborne polyurethane elastomer material is taken as a polymer matrix for constructing a rigid network, and is combined with various micromolecular organic light-emitting units through physical doping, so that the self-repairing room-temperature phosphorescent waterborne polyurethane elastomer material with strong self-healing capability, excellent optical performance and good mechanical tensile property is obtained.

A phosphor plate including: a complex containing an α-sialon phosphor and a sintered body containing spinel represented by a general formula M2xAl4-4xO6-4x (where M represents at least one of Mg, Mn, and Zn, and 0.2<x<0.6). In addition, there is provided a light emitting device including: a group III nitride semiconductor light emitting element; and the phosphor plate provided on one surface of the group III nitride semiconductor light emitting element. Further, there is provided a method for manufacturing the phosphor plate.

The invention relates to a long-life room-temperature phosphorescent material and a preparation method and application thereof.According to the phosphorescent material, epoxy resin is doped with an epoxy prepolymer containing a fluorine-containing chain segment to serve as a host matrix, F-pi and pi-pi non-covalent synergistic interaction is formed between the host matrix and aromatic fluorescent guest molecules, the energy level difference of the excited state is adjusted, and the phosphorescent material is obtained. Intersystem crossing (ISC) and radiative transition rates are optimized, so that the phosphorescence lifetime and environmental adaptability are improved; a fluorine-containing chain segment introduced into a polymer system can be enriched on the surface of a material to form a needle-shaped structure, so that the surface energy of the material is remarkably reduced, the antifouling property is excellent, and additional functions of lyophobicity, transparency, chemical stability and the like are also realized while ultra-long room-temperature phosphorescence is realized; and cooperative enhancement and multifunctional integration of optical performance and surface performance are realized.

The invention belongs to the technical field of organic electroluminescent materials, and provides an iridium-containing heterocyclic phosphorescent doping material and an organic electroluminescent device.The doping material has a compound general formula shown in the formula I. Quinoline and a naphthalene ring are connected through silane or germane, and a silicon or germanium six-membered heterocyclic structure is formed. And reacting with iridium metal and a diketone monomer to obtain the iridium metal heterocyclic phosphorescent organic light-emitting material. The heteroatom silicon or germanium in the material can adjust molecular orbital HOMO and LUMO energy levels, and the polarity effect of heteroatoms promotes electron migration, reduces interface potential barriers and electron injection barriers, reduces carrier injection loss and improves carrier mobility, so that driving voltage is reduced, and the external quantum efficiency of a device is improved. In addition, the silicon or germanium heterocyclic ring has better rigidity, so that the overall stability of the structure is enhanced, and the rigid structure can prolong the service life of the device.

The invention belongs to the technical field of organic photoelectric materials, and discloses a phosphorescent host material, a preparation method and an organic electroluminescent device.The phosphorescent host material compound is subjected to carbazolyl and triazine group substitution at the first position and the second position of a dibenzoheterocycle, and a phenyl mother nucleus structure is introduced to the substituted same-side aromatic ring of the dibenzoheterocycle, so that the phosphorescent host material is obtained. Structural molecules conforming to the general formula (1) or the general formula (2) are low in symmetry, relatively high in structural rigidity and large in steric hindrance, so that the triplet state energy can be improved, the phenomenon of energy return can be avoided, and meanwhile, the energy loss in the molecules can be reduced, so that the overall performance of the device is more excellent; in addition, the structure conforming to the general formula is more beneficial to charge transfer, so that the driving voltage is reduced, and the luminous efficiency is enhanced.

The invention relates to a fluid temperature and velocity co-measurement method and system based on iterative optimization phosphorescent particle tracking. The method comprises the following steps: dispersing phosphorescent tracer particles in fluid, and carrying out preprocessing operation on an acquired image to obtain a particle phosphorescent signal image; and deeply analyzing the processed image based on a spherical particle light spot integral discretization light intensity function, and determining the position of the tracer particle and phosphorescence intensity information. Meanwhile, the cross-frame matching technology is used for tracking the particles, and a particle motion trail and a phosphorescence intensity attenuation curve are obtained. And calculating the speed of each particle according to the particle motion trail, and processing the phosphorescence intensity attenuation curve according to the temperature response characteristic of the phosphorescence lifetime to obtain the temperature of each particle. And finally, performing post-processing on the speed and temperature data of each particle to realize synchronous measurement of the speed and temperature of the fluid so as to obtain fluid speed-temperature field data. High-precision measurement can be realized in a large-scale unsteady flow field, and a fluid flow and heat transfer coupling mechanism can be deeply explored in an assisted manner.

The application discloses a kind of full-color organic ion gel based on anion-induced phase separation strategy of high ionic conductivity, stretchability and long phosphorescence lifetime and application thereof, which comprises: introducing anions in a polymer ion solution containing a large number of hydroxyl groups, inducing molecular chain rearrangement by freeze-thaw and low-temperature drying, and constructing an ion liquid enrichment zone and a polymer enrichment zone, wherein the highly solvated ion liquid enrichment zone is a soft phase, which bears elastic deformation and ion transport function, and the polymer enrichment zone is a hard phase, which bears mechanical load and induces phosphorescence emission.The application solves the problems of poor mechanical properties, non-stretchability and short phosphorescence lifetime of existing phosphorescent materials, and synergistically improves the mechanical properties and phosphorescent properties of ion gel.The prepared ion gel has excellent environmental tolerance, recyclability and responsiveness;using its multicolor phosphorescent display and responsive electrical signals, it can be used to construct soft robots and information encryption devices with dual-channel information interaction.

The invention relates to the technical field of aeroengine turbine blade thermodynamic performance testing, in particular to a two-dimensional multi-mode turbine blade heat-flow double-field synchronous testing method and system.The method comprises the steps that phosphorescent particles are evenly scattered in an experimental flow field of a target turbine blade, and after the phosphorescent particles are excited through double lasers, the target turbine blade is subjected to heat-flow double-field synchronous testing; collecting a flow field image; inverting a temperature field by using a phosphorescence intensity ratio method based on the flow field image, and calculating a velocity field through an improved PIV algorithm; and after time-space registration is carried out on the temperature field data and the velocity field data, fusion is carried out to generate a composite heat-flow field, dynamic coupling characteristics are analyzed through a vortex center tracking algorithm, and the heat-flow double-field synchronous test of the target turbine blade is completed. Through ultraviolet / PIV dual-laser excitation, multispectral separation acquisition and high-precision data fusion, time-space synchronous measurement of the temperature field and the velocity field of the boundary layer of the turbine blade is realized.

Disclosed is a mixture, comprising: at least one first compound H1 represented by formula (I) and at least one second compound H2, the second compound H2 being preferentially selected from bicarbazole derivatives. An organic compound or mixture of the present invention, when used as a phosphorescent light-emitting host material, can improve the efficiency of devices and the service life of devices. In particular, an organic mixture can strike a good balance between electron holes and electron transport speed, and achieve low efficiency roll-off and a long service life of OLED devices at high brightness. Moreover, the material provided by the invention has a relatively simple synthesis process and is low cost, so that the material has huge application potential and application range. The invention further relates to a composition and an organic electronic device, and in particular relates to an organic electroluminescent device.

The invention discloses a method and a device for measuring the proportional oxygen concentration of a wood-based composite oxygen sensing material, and relates to the field of oxygen measurement. The technical problems that how to utilize wood to be compounded with metalloporphyrin, overcome the influence of excitation light source power on a test result and improve the anti-interference capability and stability of a sensor and the oxygen concentration test range in the prior art are solved. According to the invention, balsa wood is taken as a wood-based material, and metalloporphyrin Gd-HMME is embedded into the balsa wood, so that under the excitation of an ultraviolet laser, the ratio of a fluorescence signal to a phosphorescence signal of the wood-based composite material is taken as an optical parameter, and the oxygen concentration test is realized. The method is also suitable for the field of sensor preparation.

Provided in the present application are an organic light-emitting diode and a display apparatus. The organic light-emitting diode includes at least one light-emitting layer, which includes at least one phosphorescence sensitized light-emitting layer, wherein the phosphorescence sensitized light-emitting layer includes a host material, a phosphorescent sensitizer and a narrow-spectrum fluorescent material, and the full width at half maximum of the narrow-spectrum fluorescent material is less than 50 nm. The present application can improve the performance, such as the efficiency, of an organic light-emitting diode.

The invention discloses a self-classification driven supramolecular dimer as well as a preparation method and application thereof. According to the supermolecule composite material, cucurbit [8] uril serves as a subject, a phenylpyridinium derivative G serves as an object, and a small-size supermolecule dimer with red / near-infrared delayed emission is formed through subject-object inclusion interaction and a self-classification strategy. The supramolecular dimer structure inhibits distorted intramolecular charge transfer (TICT) and promotes space charge transfer (TSCT), enabling red thermally activated delayed fluorescence (in some embodiments, 620 nm) and near infrared phosphorescence (in some embodiments, 740 nm) of simple organic small molecules. The proposed synergistic supramolecular strategy provides a new way for realizing simple red / near-infrared delayed emission of small organic molecules in a water phase, and has potential application value in the fields of biological materials and the like.

A dual-band phosphor-converted light emitting diode (PC-LED) is provided. The dual-band PC-LED includes a blue LED configured to generate blue light, a first phosphor-based light filter configured to output visible light based on the blue light; and a second phosphor-based light filter configured to output near-infrared light based on the visible light.

The invention relates to a transparent phosphorescence-containing cured flame-retardant coating as well as a preparation method and application thereof. The transparent phosphorescence-containing cured flame-retardant coating comprises the following components: phosphorus-containing polyurethane acrylate, polyurethane acrylate, a double-bond-containing polyurethane organosilicon prepolymer, a nitrogen-containing acrylic monomer, a phosphorus-based flame retardant A, a phosphorus-based flame retardant B, silica sol, a reactive diluent B, a silane coupling agent and other auxiliaries. The coating disclosed by the invention has adhesive force, flame retardance and weather resistance, and can be directly cured on a light flexible photovoltaic module panel and a back plate through UV to achieve transparent, fireproof, flame-retardant and weather-resistant effects.

A LED filament (2,20) configured to provide LED filament light. The LED filament comprising an elongated carrier (7) extending in a lengthwise direction, said elongated carrier comprising a first major surface (7a). The LED filament further comprises a plurality of LEDs (8) arranged on said first major surface and configured to emit LED light, a first layer (9) free from a luminescent material encapsulating or covering said plurality of LEDs and at least partly encapsulating or covering said first major surface, said first elongated translucent layer having a width, W1, transverse to said lengthwise direction, and a second layer (10) comprising a luminescent material configured to partly convert said LED light, the second layer is arranged on an outer surface (9a) of said first layer, such that the second layer is contained within the width, W1, of the first layer.

An inventive luminescent material suitable for use as a phosphor for an LED includes a nitridophosphate material having a general formula AEy-xLi10-2yP4N10:Eux, wherein (i) AE includes one or more of Ca, Sr, or Ba, and (ii) y≥x>0. In some instances, y can equal 2 and x can be between 0 and 0.1. In some instances, AE can include only Ca; in some other instances, AE can include a majority amount of Ca and lesser amounts of Sr or Ba. In some instances, the luminescent material can exhibit a peak emission wavelength greater than 600 nm.

The invention discloses a preparation method of carbon dots for double-channel detection of pesticide carbendazim, which comprises the following steps: mixing a carbon source with acid water or aqueous alkali for reaction to obtain fluorescent carbon dots; and mixing the fluorescent carbon dots with a matrix for reaction to obtain the room-temperature phosphorescent carbon dots. The invention also discloses an application of the room-temperature phosphorescent carbon dot in two-channel detection of pesticide carbendazim. The room-temperature phosphorescent carbon dots prepared by the invention can interact with carbendazim in the presence of carbendazim, so that the distance between the room-temperature phosphorescent carbon dots and the carbendazim is short, and energy transfer or electron transfer between molecules can occur. The fluorescence intensity, the fluorescence wavelength, the phosphorescence intensity, the phosphorescence wavelength and the phosphorescence service life of the room-temperature phosphorescence carbon dots are changed, and the purpose of quantitatively detecting carbendazim through fluorescence and phosphorescence double channels is achieved. According to the method, the fluorescence and phosphorescence dual-channel sensing technology is used for ultrasensitively detecting the residual content of carbendazim in food and water environment for the first time, and compared with a traditional carbendazim detection method, the method has the advantages that the visualization effect is good, the accuracy and sensitivity are high, and the selectivity is good. And the requirements of batch preparation in industrial production are met, so that the method is extremely easy to practically popularize and apply.

The invention belongs to the technical field of organic photoelectric materials, and provides a phosphorescent host material, a preparation method and an organic electroluminescent device containing the phosphorescent host material. The structural general formula of the phosphorescent host material is shown in the specification. When the phosphorescent host material provided by the invention is applied to a luminescent device, the characteristics of low driving voltage, high luminous efficiency and long service life are shown, and the comprehensive performance of the obtained green organic electroluminescent device is more excellent.

The invention relates to a stimulus-response lasting phosphorescent material based on carboxymethyl chitosan and a preparation method and application thereof, the preparation method comprises the following steps: preparing a mixed solution: mixing purified carboxymethyl chitosan with pyrene-2, 7-dicarboxylic acid mother liquor dissolved by sodium hydroxide, and introducing acid to adjust the pH value to obtain the mixed solution; and preparing an afterglow film material: pouring the obtained mixed solution into a mold, and drying to obtain the stimulus-response-lasting phosphorescent material based on carboxymethyl chitosan. Compared with the prior art, the material disclosed by the invention is diversified in response dimension, wide in color change range, stable in luminescent property at normal temperature, free of inert gas or vacuum protection in a use process, good in actual operability and reusability, and suitable for customized development of personalized anti-counterfeiting ink; the material can also be used as a functional additive to be doped in hydrophilic macromolecules, and is used for intelligent information labels, wearable display fabrics, noctilucent art materials, flexible encryption coatings and other emerging application scenes.

A buoyant fishing case device is provided. The device is comprised of a buoyant device with an interior space that can store fishing poles and a plurality of fishing-related supplies. The exterior surface of the device may be reflective, phosphorescent, or fluorescent to allow the device to be easily seen if it falls into a body of water.

The invention belongs to the technical field of synthesis of organic room-temperature phosphorescent materials, and particularly relates to a doped red organic room-temperature phosphorescent material based on a red phosphorescent emitter and a preparation method of the doped red organic room-temperature phosphorescent material. The structure of the red phosphorescent emitter is shown as a formula I. The red phosphorescent emitter is novel in molecular structure, easy to prepare and stable in property. The invention also provides a red organic room-temperature phosphorescent material which has the characteristics of ultra-long service life and high brightness. Experimental data show that the longest red phosphorescence life of the material can reach 794 ms, and meanwhile, the phosphorescence quantum yield of the material is as high as 12.3%.

The invention provides a light-emitting composition film material and application thereof.The light-emitting composition film material comprises a main material and a doping material, the doping material is a compound with the structure shown in the formula I. The main material comprises a first main material and a second main material, the first host material comprises at least one carbazole derivative having a structure represented by any one of formulas (H-1) to (H-4), the second host material comprises at least one compound represented by a formula Ph-2CN-1, Ph-2CN-2, Ph-2CN-3, Ph-2CN-4, Ph-2CN-5 or Ph-2CN-6, or the second host material comprises at least one phosphorescent compound containing metal Ir. The light-emitting film material of the composition has a narrow spectrum and is used for an organic electroluminescent device, so that the device realizes narrow-spectrum TADF emission, the electroluminescent external quantum efficiency of the device reaches up to 35% or above, and the service life of the device is 500 h or above.

A display apparatus is disclosed. The display apparatus may include a substrate including a first substrate surface, an organic insulating (e.g., electrically insulating) layer on the first substrate surface, a third pixel electrode on the organic insulating (e.g., electrically insulating) layer, a third emission layer on the third pixel electrode, and a pixel defining layer to define a third opening that is to expose a central portion of the third pixel electrode. The third emission layer may include a dopant material including a phosphorescent dopant, a thermally activated delayed fluorescent dopant, or any combination thereof. The third pixel electrode may include a third-1 electrode area that is to overlap the third opening and may include a sloped area and a flattened area and a third-2 electrode area that is to overlap the pixel defining layer.

Provided is a light-emitting element which includes a light-emitting layer containing a phosphorescent compound, a first organic compound, and a second organic compound between a pair of electrodes. A combination of the first organic compound and the second organic compound forms an exciplex (excited complex). An emission spectrum of the exciplex overlaps with an absorption band located on the longest wavelength side of an absorption spectrum of the phosphorescent compound. A peak wavelength of the emission spectrum of the exciplex is longer than or equal to a peak wavelength of the absorption band located on the longest wavelength side of the absorp-tion spectrum of the phosphorescent compound.

The circularly polarized phosphorescent Pt (II) complex based on pinene modification is characterized in that a pinene group and an azole group are connected to form the Pt (II) complex with a symmetric and asymmetric structure, and the chemical general formula of the Pt (II) complex is shown as follows: # imgabs0 # provides a chiral center due to the pinene group, and utilizes the characteristics of large steric hindrance and chirality of pinene micromolecules to induce spiral accumulation of the Pt (II) complex, so that the pinene micromolecules can be converted into pinene micromolecules, and the pinene micromolecules can be converted into pinene micromolecules, so that the pinene micromolecules can be converted into pinene micromolecules, and the pinene micromolecules can be converted into pinene micromolecules. Therefore, plane rigidity and circular polarization characteristics are considered, chiral signals and quantum yield of a system are enhanced, and the compound shows excellent luminescence performance in dark red light and has great development prospects in the field of photoelectric materials.

The present specification relates to an organic light-emitting device comprising a first electrode, a second electrode provided so as to face the first electrode, and one or more organic material layers provided between the first electrode and the second electrode, the organic material layers including a light-emitting layer, the light-emitting layer includes a first host compound represented by Chemical Formula 1 or 2, a second host compound represented by Chemical Formula 3, a first dopant (phosphorescent) compound represented by Chemical Formula 4 or 5, and a second dopant (fluorescent) compound represented by Chemical Formula 6.

The invention provides a manufacturing method of a circularly polarized organic ultra-long room-temperature phosphorescent film based on chiral lyotropic liquid crystal, and belongs to the technical field of optical materials, and the manufacturing method comprises the following steps: step 1, dissolving glucose and room-temperature phosphorescent polymer (RTP) in a cellulose nanocrystal (CNC) aqueous solution, and uniformly mixing; and 2, putting the mixed solution in the step 1 into an open device, and evaporating to obtain the circularly polarized organic ultra-long room-temperature phosphorescent film based on the chiral lyotropic liquid crystal, which is marked as a CP-RTP film. According to the invention, different types of RTP: P1, P2, P3 or P4 are doped with chiral lyotropic liquid crystal CNC by virtue of glucose, so that the mixed chiral photon film with full-color and adjustable CP-RTP characteristics is shown, and meanwhile, the glum value as high as 0.59 and the long-life phosphorescence life of 371 milliseconds are realized. In addition, the three-dimensional thin film with excellent processability and multi-polarization characteristic can be realized by means of some molds.

The invention provides a phosphorescent host material and an organic electroluminescent device, and belongs to the technical field of organic electroluminescent materials, the phosphorescent host material has a structure as shown in a formula I. The phosphorescent host material is applied to the organic electroluminescent device, shows the characteristics of low driving voltage, high luminous efficiency and long service life, and can be applied to the organic electroluminescent device. And the comprehensive performance of the device is excellent.