110 results about "Fluorescent materials" patented technology

This invention discloses a method, system, and fluorescent mixed-spray device for detecting and evaluating inclined roadways in open-pit mines. The method includes: performing fluorescent material spraying and optical observation in at least two boreholes along the target exploration line; determining the spatial connectivity of roadway cavities between boreholes based on the observation results; acquiring roadway profile area data perpendicular to the exploration line at each borehole location for roadway sections determined to be connected; calculating a quantitative index characterizing the degree of profile morphology change based on the profile area data; and adaptively selecting a corresponding volume calculation model to calculate the volume of the roadway cavity based on a comparison of the quantitative index with a preset threshold. This invention combines rapid qualitative assessment of spatial connectivity based on fluorescence with accurate adaptive volume calculation based on morphological variation coefficients, using a single integrated technical process to simultaneously solve the problems of high exploration costs and low calculation accuracy in traditional methods.

The application discloses a double-line ratio fluorescent competitive immunochromatographic detection device and a preparation method and application thereof, and relates to the technical field of immunochromatographic detection.The detection device comprises a double-specificity recognition unit mixed-labeled quenched fluorescent probe, a background fluorescent material and a solid phase substrate, the solid phase substrate is provided with a T line on which a target object binding ligand is immobilized and a C line on which a quality control ligand is immobilized; and the application also provides application of the detection device in detection of exogenous harmful substances.The application solves the technical problem of low detection sensitivity of the existing method, and adjusts the binding amount of the probe on the T line and the C line through an immune competition reaction, adjusts the quenching degree of the background fluorescence based on an internal filter effect, takes (T line quenched fluorescent signal / background fluorescent signal) / (C line quenched fluorescent signal / background fluorescent signal) as a quantitative signal, and takes the C line to participate in ratio calculation to improve the detection sensitivity, so that the application is suitable for high-sensitivity qualitative and quantitative detection of small molecule compounds and the detection sensitivity is improved.

The application discloses a kind of Mn 4+ Activated fluorine (oxygen) oxide red fluorescent material and its preparation method;The application uses organic-inorganic hybrid fluoride manganese salt material as Mn 4+ Source preparation Mn 4+ Activated fluorine (oxygen) oxide red fluorescent material.The application uses organic-inorganic hybrid fluoride manganese salt material instead of all-inorganic fluoride manganese salt, manganese salt and permanganate as Mn 4+ Source, for preparing Mn 4+ Activated fluorine (oxygen) oxide red fluorescent material, significantly improve the luminescent efficiency of Mn 4+ Activated fluorine (oxygen) oxide red fluorescent material.

This application discloses a crystal, a rare-earth-doped crystal, its preparation method, and its applications, belonging to the field of crystal materials. The chemical formula of the crystal is [Gd(L)]. 1.5 (DMA)] n Formula I; in Formula I, L is a ligand formed by deprotonated benzene polycarboxylic acid; benzene polycarboxylic acid is selected from any one of terephthalic acid, phthalic acid, and isophthalic acid; DMA is N , N -Dimethylacetamide; n ∞ represents continuous repetition and infinite extension. The crystal is rare-earth doped, and the chemical formula of the rare-earth doped crystal is [Gd]. 1‑x% (L) 1.5 (DMA)] n :x% Ln 3+ Equation II; in Equation II, x = 0.1~10; Ln 3+ Selected from Tb 3+ Or Eu 3+ Any one of the following. It has potential application value in fields such as fluorescent materials, multicolor display materials, long afterglow materials, X-ray detection and imaging materials, radiation detection dosimeters, and optical information encryption. The preparation method used in this application can be easily achieved through solution reaction under relatively mild conditions, with low cost and strong industrial feasibility.

The present application relates to the field of fluorescent material, and disclose a kind of samarium activated garnet-based red fluorescent powder, including Na, Gd, Sm, Ga, In and Ge, wherein, the amount-of-substance ratio of metal element is Na:Gd:Sm:Ga:In:Ge=1:2-2x:2x:2:1:2, x is the doping amount of samarium in inert rare earth site, 0.01≤x<0.10, the fluorescent powder proposed in the present application utilizes new garnet matrix constructed by sodium, gadolinium, gallium, indium, germanium, and has significant advantages compared to the traditional garnet isomorphic system constructed by containing aluminum, silicon, alkaline earth metal in preparation process.By using the new matrix, the reaction temperature of solid-phase synthesis fluorescent powder is greatly reduced, and no auxiliary solvent is needed, and it can be synthesized in one step.The preparation method of the present application does not require specific pressure and atmosphere requirements during the reaction process.This means that the preparation process is more flexible, and does not require high-pressure equipment or complex atmosphere control, simplifying the operation steps, improving the efficiency and feasibility of preparation.

Apparatus for and method of aligning optical components such as beam splitters in an optical pulse stretcher in which a landing spot of a beam which has traversed a portion of the optical beam splitter and a coincident landing spot of a beam split from a retroreflected input beam are made to align on a target spot. Also disclosed is an apparatus and method for aligning the retroreflector to facilitate proper beam alignment. A fluorescent material may be used to render a beam landing spot visible.

This utility model discloses a vehicle combination switch, relating to the field of vehicle switch technology. It includes a fluorescent material on the upper surface of the switch for nighttime visibility of the switch's surface icons. A mounting slot is provided inside the mounting base, and a press feedback component is installed inside the mounting slot. The press feedback component is located below the bottom of the switch. Pressing the switch triggers the press feedback component to obtain press feedback. In this utility model, pressing the switch causes the contacts to make contact, activating the circuit. The control module receives the signal and triggers the indicator light to remain illuminated. Pressing the switch again causes the contacts to make contact again, generating a signal. After recognizing the secondary trigger, the control module cuts off the power supply circuit to the indicator light, turning it off. The fluorescent material allows the driver to observe the white switch icons at night. For example, when the indicator light is on, the indicator light illuminates green, creating a color difference with other icons, thus providing better feedback on the icon's on / off status.

The application discloses a chromium-doped ultra-wideband near-infrared fluorescent material and a preparation method thereof. 2‑x A x Si2O7:yCr M , wherein A is one or more of Y, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Ga, 0<=x<=0.5, 0.001<=y<=0.3, and M is one or more of 3+ and 4+. The preparation method comprises the following steps: taking raw materials according to the stoichiometric ratio, grinding and mixing; pre-calcining at 600-1200 DEG C under an air atmosphere; grinding again after cooling, calcining at 1200-1600 DEG C, keeping warm, and cooling to room temperature. The fluorescent powder can be efficiently excited by blue light, emits near-infrared light covering the NIR-I and NIR-II regions, and the peak position and half-height width of the emission spectrum can be regulated by adjusting the molar concentration of A ion replacing Sc and the chromium ion doping concentration.

This invention provides an anthracene-based fluorescent material, its preparation method, and its applications. The anthracene-based fluorescent material is as shown in Compound I. The compounds of this invention utilize the electron-donating effect of aromatic amine units such as carbazole and the electron-withdrawing effect of phosphonyl / sulfonyl groups, effectively improving the electron and hole transport capabilities of the molecules. Furthermore, the steric hindrance effect, resulting in a distorted molecular configuration, can suppress intermolecular interactions, thereby reducing the device efficiency roll-off caused by concentration quenching. The thermal exciton mechanism enables these molecules to achieve an exciton utilization rate exceeding that of traditional fluorescent molecules by 25%.

Provided are a light emitting device capable of reducing glare, a headlight, and a vehicle including the same.The light emitting device comprises: a light emitting element having a light emission peak wavelength in a range of 400 nm or more and 490 nm or less; and a wavelength conversion member including a first fluorescent material having a light emission peak wavelength in a range of 480 nm or more and less than 580 nm and a second fluorescent material having a light emission peak wavelength in a range of 580 nm or more and 680 nm or less and having a composition different from that of the first fluorescent material, wherein the light emitting device emits light having a first luminance ratio Ls / L that is 0.9 or less, where Ls / L is a ratio of a first effective radiance Ls of the light emitted by the light emitting device in consideration of a spectral luminous efficiency curve for photopic vision of humans specified by the CIE (Commission Internationale de l'Eclairage) and S-cone spectral sensitivity of humans, to a luminance L of the light emitted by the light emitting device in consideration of the spectral luminous efficiency curve for photopic vision of humans.

This invention relates to the field of fluorescent materials technology, disclosing near-infrared I-region photosensitizers, their preparation methods, and their applications in bioimaging. The near-infrared I-region photosensitizers include TPE-AT-DPTQ, TPE-EDOT-DPTQ, and TPE-HEXOT-DPTQ, possessing a D-π-A-π-D molecular structure. They utilize tetraphenylethylene as the electron donor, sterically hindered π-bridges (3-hexylthiophene, 3,4-ethylenedioxythiophene, and 3,4-dihexyloxythiophene) as bridging units, and DPTQ as the electron acceptor. By introducing long alkyl side chains, these near-infrared I-region photosensitizers significantly increase the intermolecular distance in the aggregated state, effectively preventing excessively dense molecular packing and further enhancing the AIE properties and fluorescence brightness of the molecules.

The application provides a nitride deep red light material and a preparation method and application thereof. The chemical general formula of the nitride deep red light material is La2BaSiAl 2‑x Cr x N6, wherein 0

A device configured to provide a value indicative of fluorescent emission from a substrate 5 having a test region is provided. The device comprises an electromagnetic radiation source configured to emit excitation radiation towards the test region to excite fluorescent emission from a fluorescent material in the test region. The electromagnetic radiation source is configured such that a variation in intensity of the excitation radiation across the test region is less than 15%. The device further comprises a sensor configured to capture a primary 10 image of the fluorescent emission, and a controller configured to modify the primary image based on calibration data and to use the modified image to obtain the value indicative of the fluorescent emission.

The application belongs to the technical field of organic electroluminescent materials, and particularly relates to a multiple resonance thermally activated delayed fluorescence compound, and simultaneously relates to a thermally activated delayed fluorescence material containing the compound, an organic electroluminescent device, and application of the compound, the material and the device in the field of display and illumination. The multiple resonance thermally activated delayed fluorescence compound provided by the application takes a naphthoindolocarbazole fused ring unit as a strong donor, takes a B atom as a core electron-withdrawing unit, constructs a rigid MR conjugated skeleton with N-B alternately arranged, effectively reduces the optical band gap of the material through the strong electron-donating ability of the fused ring donor, and realizes red light band emission. Meanwhile, based on the multiple resonance effect, narrow-band red light emission is realized, and the color purity is excellent, which can fully meet the stringent requirements of the red light color gamut of the ultra-high-definition display BT.2020 standard.

This invention discloses indole-fused hydrogenated morpholino compounds, their preparation methods, and applications, belonging to the technical fields of fluorescent materials and antitumor compounds. Using enamine ketones and amines as reaction substrates, a series of indole-fused hydrogenated morpholino compounds with different substituents were synthesized in highly polar solvents via the Stork enamine reaction and intramolecular acylation reaction. These compounds exhibit fluorescence wavelengths in the range of 430-700 nm and show certain inhibitory activity against lung cancer A549, breast cancer MDA-MB-231, colon cancer HCT116, liver cancer HepG2, and prostate cancer DU145, providing more options for the preparation of tumor drugs.

The application discloses a high-temperature-resistant organic fluorescent powder and a preparation method thereof. The organic fluorescent powder comprises a fluorescent seed formed by a poly-methyl methacrylate (PMMA) coated Sm 0.4 Yb 0.2 Er 0.4 (HTTA)3Phen fluorescent material, and a silica aerogel layer coated on the surface of the fluorescent seed. In the preparation, the organic fluorescent seed is prepared first, then the fluorescent seed is introduced in the preparation of the silica aerogel, and finally the high-temperature-resistant organic fluorescent powder with a core-shell structure is synthesized. The high-temperature-resistant light conversion powder can not only realize up-conversion and down-conversion, but also can improve the high-temperature resistance and optical performance of the light conversion powder, reduce light loss, improve mechanical performance, and adapt to the preparation mode of downstream products such as high-temperature extrusion.

The application relates to the technical field of fluorescent material synthesis, and discloses a high-efficiency blue light complex as well as a preparation method and application thereof. The complex has a molecular formula of [(Cu) d (X) e (M) f (N) g ]; d, e, f and g are each 1 or 2; X is halogen, M is an organic phosphorus ligand, and N is 2-methyl imidazole. The high-efficiency blue light complex provided by the application has high luminous efficiency, long service life, strong stability, and the highest quantum efficiency is 71.86%, the CIE coordinate of the complex at room temperature is (0.1602, 0.136), and the complex is close to pure blue light. The high-efficiency blue light complex provided by the application is simple in preparation and purification, has high luminous efficiency, long service life and strong stability.

This invention discloses a blue thermally activated delayed fluorescence (TADF) material, its preparation method, and its applications, belonging to the field of luminescent materials technology. Using a triazine unit as an electron acceptor and an organophosphorus-modified diphenyl acridine as an electron donor, a blue TADF luminescent material, TRz-POAc, was synthesized. Organophosphorus modification can effectively regulate the molecular twist angle, intermolecular interactions, and photophysical properties. The prepared TRz-POAc exhibits a molecular twist angle of 83.7°, with no significant π-π stacking between molecules, and a singlet-triplet bandgap (ΔEST) as low as 0.02 eV, enabling efficient reverse system crossing (RISC) processes. In doped devices, the maximum EQE reaches 22.26% with 20 wt% doping; in undoped devices, the maximum EQE is still as high as 21.00%, demonstrating excellent deep blue light emission performance and its application potential in undoped devices.

This disclosure relates to an information storage method, apparatus, electronic device, and storage medium. The method includes: performing a first operation on first data to be stored to obtain a first digital sequence, the first digital sequence representing optical characteristics; determining multiple materials with fluorescent properties based on the optical characteristics; splitting the first digital sequence to obtain multiple sub-sequences; based on each sub-sequence, using the multiple fluorescent materials, preparing target dispersions corresponding to each sub-sequence, the optical characteristics of each target dispersion being used to represent the corresponding sub-sequence; and using each target dispersion, correspondingly fabricating film layers with matching optical characteristics, the optical characteristics of each film layer being used to represent the corresponding sub-sequence. The information storage method of this disclosure balances the utilization rate of the storage medium's unit capacity with data security.

This invention belongs to the field of fluorescent materials, specifically lemon peel-based multicolor luminescent carbon quantum dots, their preparation, application, and luminescent devices. The preparation method of lemon peel-based multicolor luminescent carbon quantum dots is as follows: lemon peel and formula 1 () are dispersed in a solvent at a weight ratio of 1:0.1~2, followed by a first-stage reaction at 70~100°C, and then solid-liquid separation to obtain a first-stage reaction solution; the first-stage reaction solution is then subjected to a second-stage solvothermal reaction at 160~220°C. By adjusting the weight ratio of lemon peel and formula 1 and the temperature of the second-stage solvothermal reaction, lemon peel-based multicolor luminescent carbon quantum dots are obtained. This invention can efficiently convert waste lemon peel into multicolor carbon quantum dots with tunable fluorescence color and high quantum yield.

The application belongs to the field of luminescent materials, and discloses a Mn 4+ activated red fluorescent material for plant lighting, a preparation method and application thereof. 18 W 8‑ x O 53 :xMn 4+ , 0.001≤x≤0.009. The emission spectrum of the fluorescent material is a characteristic emission peak of transition metal ions Mn 4+ , and under excitation in the near-ultraviolet to blue light region, red light or far-red light of 660-825 nm can be emitted, which matches the absorption wavelength of plant photosensitive pigments, and can be applied to the preparation of an LED light source for indoor plant lighting. The preparation method is very simple and easy to implement, raw materials are simple and easy to obtain, and the preparation method is environmentally friendly and non-polluting.

The application belongs to the technical field of water conservancy projects and discloses an adjustable water level marker based on water conservancy and hydropower, which comprises a first marker scale, the upper surface of the first marker scale is provided with a second marker scale, the side walls of the first marker scale and the second marker scale are both provided with scale lines, the scale lines are made of fluorescent materials, the outer walls of the first marker scale and the second marker scale are both coated with corrosion-resistant layers, and the first marker scale and the second marker scale are both provided with a connecting device for connecting the first marker scale and the second marker scale with each other, and the connecting device comprises a connecting assembly and a fixing assembly. The application has the effect of reducing the probability of vertical deviation.

This invention discloses a magic number cluster CdSe-MSCs, its preparation method, and its application, belonging to the field of fluorescent materials technology. The method includes the following steps: (1) reacting a cadmium source and a ligand in an organic solvent under an inert atmosphere to obtain a cadmium precursor solution; the ligand is myristic acid and / or benzoic acid; (2) adding selenium powder to the cadmium precursor solution and carrying out a heating reaction under an inert atmosphere to obtain the magic number cluster CdSe-MSCs. The magic number cluster CdSe-MSCs obtained by this invention possess both good quantum yield and fluorescence emission performance, and as a novel semiconductor nanocrystal, it has good application prospects in fluorescent emission materials.