368 results about "Phosphorescence" patented technology

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 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 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.

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 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.

A phosphor illumination system including a housing, a phosphor wheel, a condenser lens mounted to the housing, the condenser lens configured to condense light to an irradiation spot on the phosphor wheel and a flexure plate onto which the phosphor wheel is mounted. The flexure plate includes a fixed fastener for fixedly fastening the flexure plate to a first location of the housing and an adjustable fastener for adjustably fastening the flexure plate to a second location of the housing, the adjustable fastener configured to change at least one of a distance and an angle of the flexure plate with respect to the condenser lens as the adjustable fastener is tightened to or loosened from the housing.

The organic electroluminescent device includes a first electrode, a second electrode and an organic layer located between the first electrode and the second electrode, the organic layer includes a light-emitting layer, the light-emitting layer includes a host material, a thermally activated delayed fluorescence sensitizer and a green fluorescent dye, the green fluorescent dye includes a structure as shown in formula I. A thermally activated sensitized fluorescence technique is used, and the green fluorescent dye of a specific structure in combination with the sensitizer and the host material is used, so as to achieve the effects of narrowing the spectrum of a device and improving the green color purity. The efficiency of the organic electroluminescent device is equivalent to that of a phosphorescent green light device, so that a display panel including the organic electroluminescent device has a large display color gamut area.

The described conduit identifying device comprises a flexible strip that can be configured in an open state for placement around a conduit and then assumes a coiled state to securely retain the device around the conduit. The strip is preferably biased to the coiled state, ensuring it remains attached and preventing accidental dislodgment. The device may include a locking mechanism and the strip can be made from a bistable metallic core covered with nonmetallic, high visibility materials such as fluorescent fabrics, phosphorescent materials, or reflective tapes. An indicator marking on the strip may provide clear visual identification of the conduit type. The conduit identifying device addresses the shortcomings of current practices, such as the use of adhesive stickers, which can become dislodged, leading to potential hazards and operational inefficiencies. This device ensures reliable and visible conduit identification, enhancing safety and efficiency in various environments.

Light-emitting element, comprising: an anode; a cathode; a first layer that includes a fluorescent substance; a second layer that does not contain a phosphorescent substance; a third layer comprising a first phosphorescent substance; a fourth layer comprising a second phosphorescent substance; and a fifth layer, which includes a third phosphorescent substance, wherein the first layer is arranged between the anode and the second layer, wherein the second layer is arranged between the first layer and the third layer, where the third layer is arranged between the second layer and the fourth layer, where the fourth layer is arranged between the third layer and the fifth layer, the fifth layer is arranged between the fourth layer and the cathode, where the emission peak wavelength of the second phosphorescent substance is longer than the emission peak wavelength of the first phosphorescent substance, where the emission peak wavelength of the second phosphorescent substance is longer than the emission peak wavelength of the third phosphorescent substance, and wherein each of the third layer, the fourth layer and the fifth layer comprises two organic substances that form an exciplex.

The invention discloses a biodegradable polypeptide-based circularly-polarized room-temperature phosphorescent material and a preparation method thereof, and relates to the technical field of photo-electromagnetic functional polymer materials. According to the invention, L-type or D-type glutamic acid-N-carboxyl anhydride is used as a monomer, and a small molecule initiator containing a phosphorescent element is adopted to initiate ring-opening polymerization to form chiral polypeptide; based on the chiral polypeptide, the biodegradable polypeptide-based circularly polarized room-temperature phosphorescent material is prepared through high-temperature drop casting and annealing treatment. The material prepared by the invention has excellent circular polarization room temperature phosphorescence performance and complete biodegradability, has wide application prospects in the fields of information encryption, biological probes, environment-friendly optical devices and the like, and realizes cooperation and unification of a high-performance photoelectric function and green sustainable development.

A luminescent adhesive (1) for horology components including: a first layer (10) of an adhesive material; a second layer (11), referred to as the intermediate layer, including a binder loaded with between 10% and 80% by mass of a phosphorescent pigment emitting in the UVA spectrum; and a third layer (12), semi-transparent to UV rays, including a binder loaded with between 10% and 50% by mass of a phosphorescent pigment emitting in the visible spectrum.

Miniature lighting device characterized in that it consists of one or more elements made entirely or partially of phosphorescent material, wherein these elements absorb energy during exposure to natural or artificial light and release it again in the dark in the form of visible afterglow.

The invention provides a non-contact temperature measurement system and temperature measurement method based on an organic phosphorescent material, and aims to solve the technical problem that the environment temperature cannot be monitored based on phosphorescent emission wavelength displacement due to performance limitation of the existing organic phosphorescent material. According to the non-contact temperature measurement system based on the organic phosphorescent material provided by the invention, the organic phosphorescent temperature-sensitive film is innovatively adopted to carry out temperature sensing on an object to be measured, and the organic phosphorescent temperature-sensitive film is obtained by mixing phosphorescent guest molecules, etherified cellulose and water according to a certain proportion, heating and melting the mixture, coating the mixture on a substrate and drying the substrate. Reversible aldehyde acetal can occur between phosphorescent guest molecules and the etherified cellulose, so that the phosphorescent emission wavelength of the formed organic phosphorescent temperature-sensitive film is subjected to red shift along with temperature rise, and the phosphorescent emission wavelength of the organic phosphorescent temperature-sensitive film can be analyzed; and the visual two-dimensional distribution monitoring of the continuous temperature within the temperature range of 77K-150K can be quickly and accurately realized.

The present disclosure relates to a metal complex and use thereof. The metal complex has a structure as shown in a formula (1). The metal complex provided by the present disclosure has advantages of good optical, electrical and thermal stability, high luminous efficiency, long service life, high color saturation and the like, can be used in an organic light-emitting device, particularly can be used as a green light-emitting phosphorescent material, and is possible to be used in the active-matrix organic light-emitting diode (AMOLED) industry.

The application discloses a responsive fluorescent / phosphorescent dual-mode carbon quantum dot composite material, and is characterized in that biomass such as yacon peel is used as a carbon source, ethylenediamine is used as a nitrogen source, nitrogen-doped carbon quantum dots are prepared through a one-step hydrothermal method, the nitrogen-doped carbon quantum dots and hydrophilic polymers are uniformly dispersed in deionized water to obtain the responsive fluorescent carbon quantum dot composite material, and the ink prepared by using the composite material has the following characteristics: the printed pattern is invisible under natural light, can display cyan fluorescence under ultraviolet light, presents green phosphorescence after the ultraviolet light is removed, and can realize fluorescent / phosphorescent dual-mode anti-counterfeiting functions. 3+ In addition, the printed pattern can undergo fluorescence quenching under alkaline solution or Fe 3+ solution, realizes dynamic response anti-counterfeiting functions, and solves the problems that the existing carbon quantum dots have single light-emitting mode and are difficult to have dynamic response and dual-mode light-emitting functions.

The application belongs to the technical field of organic electroluminescent materials, and discloses a phosphorescent doping material and an organic electroluminescent device containing the same. n The parent nucleus of the main ligand in the phosphorescent doping material is an aza-phenanthrene ring and a naphthalene ring substituted at a specific position, and the compound in the general formula of the application has a large oscillator strength S m excitation energy level. After absorbing external energy, the molecule can be efficiently excited, and before relaxing to the S1 energy level, the energy is transferred to the surrounding T n state through intersystem crossing, thereby fully supplying the triplet state, and finally participating in the luminescence process through the "borrowing effect" of S m and T , thereby obtaining more excellent luminescent efficiency characteristics. In addition, the device prepared from the compound in the general formula of the application has excellent overall performance, a lower driving voltage, and a longer device life.

Artificial flowers and bunches of flowers that have self-glowing properties include a flower portion and optionally one or more stems and leaves. At least the flower portion includes a self-glowing material, which includes phosphorescent compounds, such as strontium aluminate or zinc sulfide, optionally doped with rare earth elements to enhance glow intensity and duration. The luminescent material may be embedded within the base structure or applied as a surface coating or both, and is bound using a suitable medium such as acrylic or epoxy resin. Optional integration of conventional lighting elements, such as LEDs, is also contemplated

The present invention belongs to the field of organic electroluminescence, and specifically relates to a tetradentate cyclometalated platinum (II) complex guest phosphorescent material based on a 2,3',5'-substituted 1,1'-biphenyl structure and the use thereof. In the present invention, by introducing alkyl or aryl to the positions 2, 3' and 5' of 1,1'-biphenyl to increase the steric hindrance, red shift or luminescence quenching caused by molecular aggregation can be avoided. Deuteration at the periphery of a cyclometalating ligand can improve the stability of the material, so that the phosphorescent material provided by the present invention has good chemical stability and thermal stability and can be easily used for manufacturing evaporation-type OLED devices. Organic electroluminescent devices manufactured by using the complex of the present invention as a light-emitting layer material have significant improvement in both current efficiency and service lifetime, thereby achieving great application prospects in the fields of OLED display and illumination.

The present invention relates to the field of organic electroluminescent material preparation technology, and particularly, to a fluorenocarbazole tetradentate platinum(II) complex, an organic light-emitting diode material, a device, and an apparatus. By means of introducing a fluorene ring system at the 3,4-position of carbazole and introducing a substituent at the ortho-position of the benzene ring at the upper left, a novel tetradentate platinum(II) complex-based blue phosphorescent material is obtained. The proportion of components of the localized state (3LE) is increased in the excited triplet state of the cyclic tetradentate platinum(II) complex, thereby achieving a low shoulder peak, improved emission color purity of material molecules, and enhanced stability of materials. The provided materials all have good chemical stability and thermal stability, thereby facilitating the preparation of evaporation-type OLED devices. The organic electroluminescent device manufactured using the above-described compound as the light-emitting layer has a significant improvement in both the blue light index (BI) and service life, and can also reduce the turn-on voltage.

This invention provides a flexible biomass RTP thin film material, its preparation method, and its application. The thin film material comprises a biomass substrate and luminescent functional molecules dispersed in the biomass substrate. The biomass substrate includes starch, sodium carboxymethyl cellulose, and a polyol plasticizer. The luminescent functional molecules are selected from at least one of ODQA, BPDA, TDCA, BDF, TPO, QBA, and BBA, and the loading amount of the luminescent functional molecules in the biomass substrate is 0.1wt% to 5wt%. The thin film material exhibits room temperature phosphorescence properties and an elongation at break ≥15%. This invention simultaneously achieves efficient room temperature phosphorescence (RTP) emission and excellent macroscopic mechanical flexibility in a biomass substrate.

Disclosed is an organic light emitting diode (OLED) comprising at least one light emitting material (EML) disposed between two electrodes and a first light emitting material layer comprising a first compound and a second compound of a phosphorescent material and a second light emitting material layer comprising a third compound and a fourth compound having triplet state-triplet state annihilation properties, and an organic light emitting device comprising the OLED. Application of a light emitting material having adjusted excited singlet / triplet state energy levels, emission peak intensity and quarter peak full width to a light emitting material layer can reduce the driving voltage of the OLED and can improve the light emitting efficiency, blue light index and light emitting life of the OLED.

This invention discloses a calibration method and device for a spectroscopic laser-induced phosphorescence imaging system. The calibration method includes: selecting a homogenizing plate as a standard light source and placing the emitting surface of the homogenizing plate at the focal plane of the imaging system; setting the acquisition frequency, total acquisition time, and N different exposure times, and acquiring N sets of grayscale images obtained by the imaging system under different exposure times; averaging the pixel values ​​of the N sets of grayscale images to obtain the image grayscale matrix of each set of grayscale images; performing linear fitting using the least squares method on the set of grayscale matrices under the N exposure times to obtain the bias correction matrix and gain correction matrix; and correcting the original response grayscale matrix obtained under the test state based on the obtained bias correction matrix and gain correction matrix.

The application discloses a phosphorescent dopant material of a platinum compound, a preparation method, an organic electroluminescent device and application, the phosphorescent dopant material is a platinum compound with a structure shown in chemical formula I, the compound introduces a bicyclic structure on the basis of a parent nucleus, a high conjugated electron distribution system, so that the electron distribution and the excited state can be controlled, and the stability of the material is enhanced. The organic electroluminescent device prepared by adopting the compound as a light-emitting layer dopant material has high luminous efficiency, long service life and the technical effect of improving the driving voltage.

In light-emitting devices using fluorescence emission and phosphorescence emission, a multi-color light-emitting device that is advantageous for practical application. The objective is to provide this. [Solution] A first light-emitting layer comprising a host material and a fluorescent light-emitting substance, and two layers forming an excitation complex. A second light-emitting layer containing a type of organic compound and a material capable of converting triplet excitation energy into light emission. The present invention provides a light-emitting element having a stacked structure. The light emitted from the first light-emitting layer is then emitted from the second layer. Light-emitting elements whose emission spectrum peaks are located at shorter wavelengths than the emission from the layer are more useful. be.

The application provides a multimodal luminescent anti-counterfeiting material and a preparation method and application thereof, and belongs to the technical field of luminescent anti-counterfeiting materials. The prepared multimodal luminescent anti-counterfeiting material is prepared by mixing chiral conjugated small organic molecules with double conformation and polymethyl methacrylate polymers, and the anti-counterfeiting material has the characteristics of excitation wavelength dependence, photoactivated room-temperature phosphorescence emission and circularly polarized luminescence. The preparation method is simple. The luminescent molecules and the polymethyl methacrylate are mixed and dissolved in a tetrahydrofuran solution, and are fixed on a carrier by coating, so that the luminescent anti-counterfeiting label can be prepared. The anti-counterfeiting material has unique luminescent performance, is difficult to counterfeit and forge, has high security in the advanced anti-counterfeiting field, and has great application potential.

Light-emitting element comprising: a first electrode (103); a light-emitting layer (703) above the first electrode (103), wherein the light-emitting layer (703) comprises a guest material and a host material; and a second electrode (108) above the light-emitting layer (703), where a fluorescence spectrum of the host material and a phosphorescence spectrum of the host material overlap the absorption band on the longest wavelength side (the side of lowest energy) in the absorption spectrum of the guest material, wherein the difference between the energy value of the maximum of the fluorescence spectrum of the host material and the energy value of the maximum of the absorption band on the side of the lowest energy in the absorption spectrum of the guest material, wherein this maximum has an absorption wavelength corresponding to a direct transition from the singlet ground state to the lowest excited triplet state of the guest material, is 0.2 eV or less, wherein the host material is a mixture of a heterocyclic compound and an aromatic amine compound or carbazole compound, and where the level of a triplet excitation energy of the host material is higher than the level of a triplet excitation energy of the guest material.

The invention discloses a thermal barrier coating temperature and thickness coupling measurement method, system and device and a storage medium, and relates to the technical field of aeronautical material testing. The method comprises the following steps: calibrating a mapping relation among parameters: preparing a series of standard samples with different thicknesses, collecting phosphorescence spectrums of the samples with the standard thicknesses at different temperatures, and calibrating the mapping relation among the parameters; the phosphorescence spectrum of the to-be-detected sample is collected, the phosphorescence intensity ratio of 457 nm to 483 nm is calculated, and the phosphorescence intensity of 586 nm is read; calculating the temperature of the to-be-measured sample: calculating the temperature of the to-be-measured sample according to the measured phosphorescence intensity ratio and the intensity ratio-temperature mapping relation; and calculating the thickness of the to-be-measured sample: determining a change curve of the phosphorescence intensity along with the thickness according to the calculated temperature of the to-be-measured sample, and calculating the thickness of the phosphorescence coating in combination with the measured phosphorescence intensity. The method and the system can realize non-contact synchronous online measurement of the temperature and the thickness of the thermal barrier coating.

The invention relates to the technical field of organic photoelectric functional materials, and discloses a full-conjugate carbazolyl pinene chiral tetradentate platinum (II) or palladium (II) complex phosphorescent material as well as a preparation method and application thereof. According to the tetradentate platinum (II) or palladium (II) phosphorescent material disclosed by the invention, a pinene structure with large stereo steric hindrance, a donor carbazolyl structure derivative with anions and different acceptor structure units are introduced, so that the tetradentate platinum (II) or palladium (II) phosphorescent material has a large conjugate plane and a high conjugation degree, and an aggregation state-induced emission enhancement effect is realized; according to the palladium (II) complex phosphorescent material disclosed by the invention, the concentration quenching effect and exciton annihilation caused by long service life are effectively inhibited, and the photoluminescence quantum efficiency of the palladium (II) complex phosphorescent material is improved to the greatest extent, so that the phosphorescent quantum yield of the material is remarkably improved, and the piezo-chromic red shift effect is also realized; the vapor deposition method under specific conditions is applied to the luminescent layer of the electroluminescent device, and has great potential in the aspects of recording, data storage, sensors and the like.

This invention discloses a method for preparing a single-component room-temperature phosphorescent / fluorescent dual-emission polymer film, comprising: reacting a terminal amino-substituted alkane with halogen-modified naphthalenecarboxylic anhydride to synthesize an organic light-emitting small molecule with phosphorescent / fluorescent dual-emission function; and mixing the obtained organic light-emitting small molecule into a dynamically cross-linked supramolecular polymer to obtain a single-component room-temperature phosphorescent / fluorescent dual-emission polymer film. This invention also discloses the single-component room-temperature phosphorescent / fluorescent dual-emission polymer film prepared by the above method and its applications. The preparation method of this invention is simple and low-cost. The polymer film prepared with only a single component can generate a phosphorescent / fluorescent dual-emission ratio light signal with stable emission. The film color changes with changes in ambient humidity, and the film can sense ambient humidity in the range of 1–100%, showing broad application prospects in sensing, anti-counterfeiting, and bioimaging fields.