622 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 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 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.

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.

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.

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 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 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 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.

The invention belongs to the technical field of organic light-emitting materials, and particularly relates to a step-by-step stimuli-responsive crystalline light-emitting material and a preparation method and application thereof. The crystalline luminescent material is a crystalline material based on a polysulfide aromatic hydrocarbon type compound, and the polysulfide aromatic hydrocarbon type compound is a compound based on a tetrathiobenzene mother nucleus. The compound does not have a photoluminescence discoloration property in a crystalline state, but has an obvious photoluminescence discoloration property after the crystallinity is reduced through force stimulation; and the wavelength and proportion of fluorescence / phosphorescence of the compound and the molecular orbital of an excited state can be controlled by adjusting related substituents, so that the optical property is adjustable. The high-crystallinity material prepared from the compound has a response effect on step-by-step stimulation of force and light, so that the high-crystallinity material can be applied to encryption anti-counterfeiting, information storage and the like. The application scenarios include currency anti-counterfeiting, certificate anti-counterfeiting, commodity package anti-counterfeiting, bill anti-counterfeiting, artwork anti-counterfeiting, electronic equipment anti-counterfeiting, logistics anti-counterfeiting, supply chain anti-counterfeiting and the like.

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 present invention relates to the field of optical material technology, and discloses a flexible organic room temperature phosphorescent material, its preparation method, and application. The preparation method comprises the following steps: dissolving a terpyridine phosphor and a polymer in water to obtain a precursor solution, annealing the precursor solution, and volatilizing the precursor solution to form a film to obtain the flexible organic room temperature phosphorescent material; the present invention uses a terpyridine compound as a phosphor and physically doping it into a polymer matrix to prepare an ultra-long organic room temperature phosphorescent material; and by regulating the doping concentration and type of phosphorescent molecules, the afterglow life and color can be regulated. The required raw materials are inexpensive and readily available, and the prepared material has the advantages of good flexibility, high transparency, and a long phosphorescence life, and has broad application prospects in the fields of afterglow display, information encryption, and anti-counterfeiting.

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.

An OLED is disclosed whose emissive layer has a first host and an emitter, where the emitter is a phosphorescent metal complex or a delayed fluorescent emitter, where EH1T, the T1 triplet energy of the first host, is higher than EET, the T1 triplet energy of the emitter, where EET is at least 2.50 eV, where the LUMO energy of the first host is higher than the HOMO energy of the emitter, where the absolute value of the difference between the HOMO energy of the emitter and the LUMO energy of the first host is ΔE1, where a ≤ ΔE1 - EET ≤ b; and where a ≥ 0.05 eV, and b ≤ 0.60 eV.

The invention relates to the technical field of luminescent materials, in particular to a circularly polarized phosphorescent Pt (II) complex as well as a preparation method and application thereof. The circularly polarized phosphorescent Pt (II) complex has a structure as shown in a formula (R)-I, a formula (S)-I, a formula (R)-II, a formula (S)-II, a formula (R)-III or a formula (S)-III, according to the invention, [2.2] paracyclophane is mainly used as a planar chiral skeleton, and different sites of the planar chiral skeleton are modified to obtain the circularly polarized phosphorescent Pt (II) complex which is stable in chirality and is not easy to racemize. The high-efficiency circularly polarized phosphorescent Pt (II) complex with both luminous quantum yield and circular polarization property is obtained by utilizing the advantages of a four-coordinate plane structure, high exciton utilization rate and adjustable color of the Pt (II) complex, and the high-efficiency circularly polarized phosphorescent Pt (II) complex has great research value on development of circularly polarized chiral materials. .

The application belongs to the technical field of luminescent materials, and particularly relates to a binuclear platinum complex and application thereof. The binuclear platinum complex has the structure shown in formula (1), and when used in an OLED, especially in a blue light emitting region, the binuclear platinum complex exhibits enhanced phosphorescence quantum yield, good luminescence stability, high luminescence efficiency, and is suitable for use as an emitter material in OLED application. The metal platinum complex of the application can obtain an organic electroluminescent device with deep blue phosphorescence and improved luminescence efficiency, and the luminescent device has good thermal stability. The binuclear platinum complex has the advantages of narrow emission spectrum, high stability and high efficiency by adjusting the structure of the ligand around the metal center and the structure of the substituent on the ligand to control the photophysical properties, and has wide application prospects in many fields such as OLED display and lighting.

The present invention discloses a multi-component tunable polymer long afterglow luminescent material and its application. The polymer long afterglow luminescent material contains a multi-component polymer TPAP and can be applied to the field of light-emitting diodes. The present invention also discloses a preparation method of the polymer long afterglow luminescent material, firstly, a precursor PAA-NHS is synthesized by free radical copolymerization, and then a phosphorescent unit is introduced by decoupling of the PAA-NHS ester group amino. The obtained polymer film exhibits multi-color long-life room temperature phosphorescence at atmospheric room temperature. In addition, three phosphors are introduced simultaneously in the reaction, and a wide range of color-adjustable room temperature phosphorescence including white light can be achieved by adjusting the feed ratio. The present invention adopts a convenient one-pot reaction, the preparation method is simple and controllable, and has the advantages of low cost and easy acquisition of raw materials. It provides a new strategy and theoretical guidance for realizing long-life dynamic color-controlled afterglow in non-doped polymer systems, and also broadens the application of polymer long afterglow luminescent materials.

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.

The invention discloses a phosphorescence color adjustable metal-polynitrogen heterocyclic complex glass material and a preparation method thereof. According to the invention, a series of color-adjustable super-long RTP metal-polynitrogen heterocyclic complex glass materials are successfully prepared by taking metal halides and polynitrogen heterocyclic ligands as raw materials through a hydrothermal disturbance technology and a simple solvent evaporation method. The glass has high hardness and high transparency, the phosphorescence color can be adjusted from blue to yellow, and the excited state life of the glass is up to 186.7 ms. In addition, the method is simple, convenient, efficient and low in cost, and provides an innovative thought and approach for design and preparation of a novel room-temperature phosphorescent glass material.

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.

Preparation and application of organic ligands based on metal chain scaffolds and heavy atom effects to enhance metals, including their properties and applications. A three-dimensional Cd-MOF was synthesized by ingeniously combining organic phosphorescent ligands with metal ions. At room temperature, it exhibits enhanced blue photoluminescence performance, a phosphorescence lifetime of up to 124 ms, and an afterglow duration of up to three seconds. Furthermore, it displays multicolor luminescence characteristics ranging from blue to green to yellow, varying with excitation, time, and temperature. Based on these properties, Cd-MOF shows promising application prospects in areas such as multi-information encryption, display, and anti-counterfeiting, providing a possibility for developing novel MOF platforms for anti-counterfeiting and encryption.

The invention discloses a pure organic room-temperature phosphorescent material and a preparation method thereof, and relates to the technical field of organic phosphorescent materials. The structural formula of the pure organic room-temperature phosphorescent material is as follows: R1 and R2 are independently selected from substituted or non-substituted alkyl, and R3 and R4 are independently selected from hydrogen, substituted alkoxy or non-substituted alkoxy. According to the present invention, the rotation resistance covalent bond is introduced between the electron donor and the electron acceptor, such that the electron donor and the electron acceptor cannot be coplanar so as to achieve stable ground state-excited state molecular orbital separation; an ester group with lone pair electrons is introduced to a proper position on an electron acceptor, so that the ester group is overlapped with a molecular orbit of an electron donor through the lone pair electrons, thereby providing an n-pi transition path in a triple excited state, and further greatly improving kP. Compared with the existing pure organic room-temperature phosphorescent material, the kP of the pure organic room-temperature phosphorescent material provided by the invention is improved by one order of magnitude, and stable phosphorescent emission can be realized in air.

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.