104results about How to "Stable luminescence" patented technology

The invention relates to a medical testing kit for performing quantitative detection on human serum RBP4 using chemiluminescence magnetic-enzyme immunotherapy. The kit is composed of four reagent parts: specificity mouse anti-human RBP4 custodite immunomagnetic beads, enzyme labelling specificity mouse anti-human RBP4 antibody II, chemiluminescence substrate, corresponding titer and quality control liquid. The using method of the kit comprises: using bead particulates as solid phase carrier, combining specificity mouse anti-human RBP4 antibody I on the surface, forming RBP4 specificity immunocompetence beads, capturing antigen RBP4 to be detected in the enzyme labelling specificity mouse anti-human RBP4 antibody II, forming double antibody sandwich composite on the surface of the beads, wherein enzyme marked on the composite reacts with corresponding irradiance substrate in the reaction system to form stable luminous signals, thereby reaching quantitative detection and analysis on RBP4 through strength of the detection light signals. The invention has the advantages of high sensitivity, high specificity, simple and fast operation.

The invention belongs to the technical field of agricultural light conversion, and discloses an application of carbon dots in the light conversion of agricultural production as an agricultural light conversion material. Carbon dots are directly used as an agricultural light conversion material and applied to agricultural production; an excellent light conversion effect is obtained, and the cost is low. The carbon dots are used as an agricultural light conversion material in the light conversion of agricultural production; and the carbon dots are at least one of red light carbon dot and blue light carbon dot. Compared with other fluorescence materials, the used carbon dots have the advantages of easily-available and abundant raw materials, simple synthesis process, green and environment-friendly technology, and no aftertreatment pollutant, and the industrial massive production can be realized. The prepared fluorescent carbon dots are small in size (less than 10 nm), are nontoxic, have good biocompatibility, a stable luminescent property, and a low cost, can be used as a light conversion agent to promote the production of various crops, and improve the yield and quality of crops.

The invention relates to a method for quickly preparing carbon quantum dots emitting blue light and carbon quantum dots emitting green light. According to the method, an environmentally-friendly hydrothermal synthesis method is adopted, L-ascorbic acid and ethidene diamine serve as raw materials, deionized water serves as solvent, the carbon quantum dots emitting the blue light and the carbon quantum dots emitting the green light are formed by quick synthesis of the L-ascorbic acid at different temperatures, the purity of products reaches 99%, the water solubility reaches 99.5%, the particle diameter of the carbon quantum dots emitting the blue light is smaller than or equal to 6 nm, the particle diameter of the carbon quantum dots emitting the green light is smaller than or equal to 6.2 nm, and the carbon quantum dots are good in dispersity, good in water solubility, good in fluorescence, capable of being applied to fluorescence probes, biomedical imaging, printing inks and photovoltaic devices; the preparation method is advanced in process, precise and detailed in data, high in preparation speed, good in product purity and stable in light-emitting performance and is a very ideal method for quickly preparing the carbon quantum dots emitting the blue light and the carbon quantum dots emitting the green light.

The invention discloses a preparation method for a molybdenum disulfide quantum dot. The method comprises the following steps: (1) dispersing molybdenum disulfide powder in absolute ethyl alcohol, adding 0.5 to 3mg / mL of sodium hydroxide into the solution, and performing ultrasonic and uniform mixing to obtain a mixed solution; (2) transferring the mixed solution into a reaction kettle, sealing the reaction kettle, reacting for 3 to 24h in an oven of which the temperature is 100 to 200 DEG C, performing natural cooling until the temperature is room temperature, performing filtration, and then collecting obtained filter liquid; (3) dialyzing the filter liquid obtained in the step (2) in a dialysis bag to be neutral, removing small impurity molecules, and performing drying to obtain the molybdenum disulfide quantum dot. The preparation method for the molybdenum disulfide quantum dot is simple in operation, environmentally-friendly and low in cost, process conditions are easy to realize, and the prepared molybdenum disulfide quantum dot is excellent in dispersity, water solubility and fluorescence. The molybdenum disulfide quantum dot has a potential application value in terms of photo-electronic devices, lithium ion batteries, biological imaging, photo-electronic catalysis and the like.

The invention discloses a functionalized metal-organic framework compounds, complexes formed therefrom, and methods of preparation and use thereof, wherein the molecular formula of the functionalizedmetal-organic framework compound is C36H22N7O4Zn, and the complex is formed by self-assembling tetra(4-(3-(4-carboxyphenyl)-2,3,4-triazole)-phenyl)ethylene as the main ligand, 4-4'-bipyridine as an auxiliary ligand and zinc nitrate. A LIFM-WZ-6 has high fluorescence quantum yield and two-photon absorption cross section, and has the advantages of high emission intensity and stable luminescence performance. A large amount of small cationic dyes can be adsorbed to achieve the purpose of adjusting the luminescence properties by single-photon and two-photon excitation and realize the emission of white light. The LIFM-WZ-6 does not mercury, is non-toxic, non-volatile, easy to recycle, and environmentally friendly; the composite can adsorb different kinds of cationic dyes with different contentsto obtain light emitting complexes with different light colors and luminosity, so that the light colors of the light emitting complexes can be more easily adjusted and the light color conversion can be realized.

The invention discloses a full-color emission glass phosphor for near ultraviolet or blue light stimulating white light LEDs (Light Emitting Diodes) and a preparation method thereof. The glass phosphor is a rare earth ion doped glass phosphor containing silver ion polymers. The preparation method comprises the following steps of: by using a glass system as a substrate and AgNO3 as a raw material, introducing silver ion polymers into the glass material; and by using rare earth ions such as Eu3+, Sm3+, Pr3+, Tb3+, Dy3+, Er3+ or Ho3+ as a luminescence center, singly or jointly doping the rear earth ions in the glass substrate to be matched with the silver ion polymers for giving out white lights. The single glass phosphor is used for replacing fluorescent powder for the traditional white light LED and encapsulating materials, thereby simplifying the packaging technology; and the full-color emission glass phosphor has the advantages of being capable of solving the aging problem of the while light LED devices, increasing the stability of the devices, increasing the stimulation efficiency on the rare earth ions and realizing the high brightness fluorescence-emission.

The invention discloses a light-emitting film used for LED lighting and provided with a micro-mirror structure and a preparing method of the light-emitting film and relates to the technical field of LED lighting and displaying. Binding agents, anti-setting agents, dispersing agents, antifoaming agents and fluorescent powder are processed in a vacuum defoamation mode to prepare fluorescent sizing agents; a screen mesh technology is adopted for printing the fluorescent sizing agents on a substrate, and a fluorescent powder coating is prepared; an impressing technology is adopted for preparing micro-mirror patterns on an optical polymer film material to prepare a micro-mirror structure film; finally, the micro-mirror structure film and the fluorescent powder coating are stuck together to prepare the light-emitting film used for LED lighting and provided with the micro-mirror structure. The prepared fluorescent powder coating is prepared, the technology is simple, and the thickness, the pattern shape and the fluorescent powder content of a film layer are easily controlled. According to the light-emitting film, the service life of a whole LED lamp is effectively prolonged, and the LED lamp has the more stable light-emitting performance.

The invention relates to a preparation method of a metavanadate nano crystal / polymer composite fluorescent screen. Nitrate is used as a precursor; polyacrylamide gel is first prepared and treated with low temperature calcination to obtain alkali metal metavanadate nano crystal white light material; then a styrene-methyl methacrylate copolymer is compounded with the nano crystal to obtain a composite fluorescent microballoon; and a solution spin coating method is employed to prepare a composite fluorescent film, which illuminates green and white lights and has a film thickness no more than 60mm. The composite fluorescent screen can be applied to panel display and white light diode, has a good purity reaching 98%, a high luminescence internal quantum efficiency reaching 86% and stable luminescent properties, and can emit green and white light with a color coordinate of x equal to 0.3117 and y equal to 0.4259. The preparation method with an advanced technology, accurate parameters and no environmental pollution is an ideal method for preparing an organic / an inorganic composite luminescent material.

The invention provides a luminous material and a manufacturing method thereof. Luminous fibers are added into fabric material yarns so as to achieve a luminous effect of the material. The manufacturing method comprises the following steps: processing the yarns in which the luminous fibers is added into the yarns needed in production through a conventional spinning technique, and manufacturing the yarns into the luminous material by a pattern design through a traditional weaving machine and a traditional technology. The luminous material with good air permeability and hand feeling can be used for manufacturing dresses, home textiles and other products with high requirements, and can be dyed with no toxicity, harm or radioactivity. The luminous material can display different effects according to different pattern weave designs, can continually shine for more than ten hours in the dark, and can be recycled without limitation; and the material can retain more than 60 percent of luminosity after being rinsed for more than 50 times and has stable luminance.

The invention discloses a photoluminescent composite material and a preparation method and application thereof. The preparation method includes: adopting a diffusion method to prepare organic peroskite nanoparticles; mixing the organic peroskite nanoparticles with organosilicon resin to obtain the photoluminescent composite material. A photoluminescent thin film stable in property can be formed by coating the photoluminescent composite material to form a film and drying for curing the film. The preparation method is simple, and the photoluminescent thin film is stable in performance and has wide application range.

The invention relates to a quantum dot composite particle material capable of emitting white fluorescence and a preparation method thereof. Fluid which contains red, green and blue three-color quantum dots and a polymerizable component which are mixed according to a ratio are injected into a channel of a microfluid device; the fluid is gathered into a water phase solution which contains a surfactant and a photoinitiator at an opening of the channel, so that liquid drops are formed and are suspended in the water phase; the polymerizable components in the liquid drops are irradiated by ultraviolet to realize photopolymerization under the action of the photoinitiator; the quantum dot composite particle capable of emitting the white fluorescence can be obtained by polymerization curing. The quantum dot composite particle material prepared by the preparation method disclosed by the invention has a controllable particle size and a uniform size and is high in quantum efficiency; the stability of quantum dots are high in stability; meanwhile, the preparation method is simple and is favorable for batch production.

The invention provides a method for preparing blue emission carbon quantum dots. According to the method, carbon quantum dots are synthesized by a microwave method, and dehydration-condensation reaction generated under the microwave effect between amino acid and ethylene glycol is utilized to form carbon quantum dots. The method is a one-step preparation method, is quick, efficient and simple. Furthermore, the invention further develops application of the blue emission carbon quantum dots in oneness detection of antibiotics, and provides a novel method for quantitatively detecting metronidazole. The aim of quantitative detection can be achieved by utilizing optical sensing between metronidazole and carbon quantum dots, and the method is quicker, simpler, more convenient and more intuitive than other methods.

The invention discloses an ytterbium ion Yb<3+> activated borotungstate upconversion luminescent material and preparation thereof. The chemical composition is shown in a general formula R3-3xYb3xBWO9, wherein R is one or more of rare earth Er<3+>, Eu<3+>, La<3+>, Y<3+>, Ce<3+>, Tm<3+>, Pr<3+>, Nd<3+>, Sm<3+>, Gd<3+> and Tb<3+>; and x is the mol percent of the doped Yb<3+>, and 0.0001<x<=1.0. The upconversion luminescent material provided by the invention is prepared by a high-temperature solid-phase method or a chemical synthesis method; the material is high in chemical purity, good in luminous mass and stable in performance; under the excitation effect of infrared laser of 975 nanometers, the material can realize green upconversion luminescence; and the luminescent intensity of the material can be increased with the increase of the energy intensity of an excitation diode. Besides, the preparation process of the material is simple and pollution-free, and is suitable for industrial production.

A planar light source device includes a light source section having a plurality of light emitting diodes as a light source, and a light guiding plate guiding light from the light source section to emit planar light. The light emitting diodes being turned off detect the quantities of light from the other light emitting diodes, and adjust the quantities of light emission of the other light emitting diodes based on the detected quantities of light.

The invention provides a panchromatic adjustable long-life room-temperature phosphorescent material and a preparation method thereof. The long-life room-temperature phosphorescent material is a compound composed of boron oxide polycrystals and carbon dots, wherein the carbon dots are generated in situ and are uniformly dispersed and embedded in the boron oxide polycrystals, and the boron oxide polycrystals are blocky polycrystals generated by in-situ dehydration of boric acid molecules. According to the invention, the long-life room-temperature phosphorescent material has a panchromatic adjustable long-life room-temperature phosphorescent color, and the phosphorescent color can be adjusted from blue to red to cover the whole visible region; and the average decay life of the long-life room-temperature phosphorescent material can reach 113.90-581.76 ms in a room-temperature air environment, the maximum decay life can reach 1311.07 ms in a 77K vacuum environment, the afterglow time which can be distinguished by naked eyes can reach 5-12 s in the room-temperature air environment, and the long-life room-temperature phosphorescent material is stable in phosphorescence luminescence performance and can be stored for a long time.

The invention discloses a borate fluorescent powder for a white-light LED. The borate fluorescent powder is shown in the following chemical formulas: aMo.bNO.cB2O3: xEu<2+>, yCe<3+>, zTb<3+> and (y+z)Na<+>, wherein M is Ba or Sr, N is Mg, Zn or Ca, and a, b, c, x, y, z are respective molar fractions; the values are as follows: a is more than 1 and less than 3, b is more than 0.5 and less than 2, c is more than 0.5 and less than 2, x is more than 0.001 and less than 0.2, y is more than 0.01 and less than 0.2, z is not less than 0 and less than 0.2. The invention further discloses a preparation method of the borate fluorescent powder for the white-light LED. The borate fluorescent powder disclosed by the invention has the beneficial effects of stable performance, wide range of excitation and emission spectrum, high color rendering index, simple process, easy operation, no pollution and low cost.

The invention discloses a luminous brick which contains luminous fibers and concrete, wherein the luminous fibers are uniformly arranged in the luminous brick. The luminous brick disclosed by the invention can be designed into diversified luminous patterns so as to be decorated on the ground, wall surfaces and various patterns, and can maintain excellent bearing capacity. Meanwhile, the inventionfurther discloses a preparation method of the luminous brick. By changing the mold structure, simplifying optical fiber penetration and uniformly distributing and positioning, the fiber planting speedand quality of the luminous fibers are improved; and an effect of improving the adhesive structure compactness and bearing capacity among prefabricated luminous concrete bricks is achieved, so that the luminous brick is stable in luminous performance, excellent in durability, high in pressure-bearing strength, stable in structure and long in luminous duration.

The invention belongs to the field of photoelectronic devices and discloses a flexible organic light-emitting diode and a manufacturing method thereof. The flexible organic light-emitting diode is of a laminated structure and structurally sequentially comprises a substrate, an anode layer, a hole injection layer, a hole transmission layer, a light-emitting layer, an electron transmission layer, an electron injection layer and a cathode layer. The flexible organic light-emitting diode is characterized in that a buffer layer is further arranged between the substrate and the anode layer, and the anode layer is of a multi-layer compound structure. By inserting the buffer layer, the combining force between an anode and the substrate is reinforced, so that the made flexible organic light-emitting diode is good in bending performance, stable in light-emitting performance and high in light-emitting efficiency.

The invention discloses ground limestone-based bismuth and europium co-doped yellow fluorescent powder. According to the fluorescent powder, ground limestone is used as matrix, EU<3+> is used as an activating agent, Bi<3+> ions are used as a sensitizing agent, and alkali carbonate is used as a fluxing agent and a charge compensation agent; and the molar ratio of ground limestone to EU<3+> to Bi<3+> to M2CO3 is 100:(1-5):(1-15):(0.5-2.5), wherein M is one or more of Li<+>, Na<+> or K<+>. The invention also discloses a preparation method for the ground limestone-based bismuth and europium co-doped yellow fluorescent powder; and the preparation method comprises the following steps of: accurately weighing raw materials, fully grinding the raw materials in a ball grinding mill, mixing uniformly to form powder and thus obtaining precursor, pre-treating in a high-temperature furnace, grinding, calcining the precursor at CO2 atmosphere of standard atmospheric pressure, and grinding to obtain a sample. The provided preparation method for the fluorescent powder is simple, and the fluorescent powder is stable in performance, and high in luminous intensity and has important application value.

The invention provides a bicyclo-iridium complex, a preparation method of the complex, an organic light emitting diode (OLED) and a preparation method of the OLED, which belong to the field of organic electroluminescence. A light emitting layer of the OLED comprises the bicyclo-iridium complex with the following structure shown in the specification, wherein substituent groups R1 and R2 can be same or different. The OLED provided by the embodiment of the invention has the advantages of high external quantum efficiency, high red luminescence saturation degree and stable luminescence property.

The invention aims to quantitatively detect chloramphenicol by utilizing photobacterium leiognathus (YL). In the invention, the photobacterium leiognathus (YL) from marine environment is separated andpurified, and the photobacterium leiognathus is a gram-negative bacillus. China Center for Type Culture Collection (CCTCC) is authorized to preserve the photobacterium leiognathus strain on December27, 2006 with a preservation number of M 206139. The 16S rDNA gene sequence of the photobacterium leiognathus strain is submitted to the CenBank database with an access number of EF017227. The invention establishes a method system for quantitatively detecting the chloramphenicol by utilizing the characteristics of quick growth, stable luminous performance, low requirement on nutrition and sensitivity to the chloramphenicol of the photobacterium leiognathus strain and the characteristic that the concentration of the chloramphenicol is in a direct proportion to the luminous intensity suppressionratio of the photobacterium leiognathus strain through selecting indexes of an optimal detection wavelength, an optimal growth state, initiative luminous intensity, reaction time, reaction temperature, and the like so as to realize the quantitative detection of the chloramphenicol. The requirement on the quick quantitative detection of the chloramphenicol can be met by utilizing the characteristics of low cost, simple operation, high sensitivity, and the like for detecting the chloramphenicol of the invention.

The invention relates to a nitrogen-doped carbon quantum dot green fluorescent material, and a preparation method thereof. The particle size of the nitrogen-doped carbon quantum dot green fluorescentmaterial ranges from 3 to 5nm; under 270 to 462nm light excitation, the nitrogen-doped carbon quantum dot is capable of emitting bright green fluorescence, the highest fluorescence quantum efficiencyis 55%, the particle size ranges from 3 to 5nm. According to the preparation method, isopropanol is taken as a carbon source, a tin salt is taken as a catalyst, the nitrogen-doped carbon quantum dot synthesis time is shortened greatly, the fluorescence efficiency of the nitrogen-doped carbon quantum dot synthesized in 2h reaches 36%; the performance of the nitrogen-doped carbon quantum dot prepared using the above preparation method is stable in pH range of 4 to 9; the preparation method is capable of simplifying nitrogen-doped carbon quantum dot technology greatly; preparation efficiency is increased; and preparation cost is reduced greatly.

The invention relates to a red perovskite quantum dot with stable luminescence property, and a preparation method thereof. The chemical formula of the material composition of the red perovskite quantum dot is CsPbBrxI3-X, wherein x is greater than 0 and less than 3. The preparation method of the red perovskite quantum dot uses a short-chain metal organic salt for replacing oleic acid added in theprocess of preparing quantum dots by a traditional thermal injection method, the addition of the organic short chain passivates the surface of the perovskite quantum dot and remarkably improves the stability of the red perovskite quantum dot, and the luminous intensity and the stability are greatly improved compared with those of a red quantum dot prepared from traditional oleic acid. The preparedquantum dot is dispersed in n-hexane, has good dispersibility, and is easy for subsequent QLED packaging. The red perovskite quantum dot is stable in luminescent property and high in luminescent intensity, and the stability of the red perovskite quantum dot to oxygen and water vapor is higher than that of the red perovskite quantum dot prepared by the traditional thermal injection method.

The invention relates to a method to prepare a transparent humidity resistant covering electroluminescence powder, realizing its preparation by the combination of sol-gel method and hydrolysis method. The invention has simple equipment and operation, low cost, the humidity resistant film formed on electroluminescence powder is average, and the transmission of light and electric performance are both outstanding, the electroluminescence powder processed by the invention stable performance, prolonged service life. It is a new method easy to be produced in large scale.

The invention discloses a noctilucent shell fabric which is compounded from a polymer noctilucent material and cloth and is composed of two layers of materials, wherein the two layers of materials are respectively a common material layer and a noctilucent material layer; the common material layer is positioned at the outer side and is woven by pure cotton, pure silk and pure hemp in a blending way and used for realizing the warming function of dress fabrics; and the noctilucent material layer is positioned at the inner side, is made of a polymer material and is provided with a plurality of noctilucent cavity holes. The noctilucent shell fabric has the beneficial effects of good air permeability, good hand feel, low possibility of fading, low possibility of losing color and the like, and can be cleaned. The shell fabrics which are processed and are not processed do not have essential difference without affecting shell fabric texture; the processed shell fabric is nontoxic and harmless, is free of radioactivity, can keep lighting for more than 10 hours, can be reused unlimitedly, and has stable lighting performance.

The invention aims at providing a Photobacterium leiognathi YL bacterial strain deriving from marine environment and quantitative detection on environmental pollutants by using the bacterial strain. In the invention, the luminous bacterial YL deriving from the marine environment is obtained by separating and purifying, is Gram-negative bacilli, and is rhabditiform. The luminous bacterial YL is identified to be Photobacterium leiognathi according to a phylogenetic tree established by a 16SrDNA sequencing result and a physiology and biochemistry result. The Photobacterium leiognathi YL is preserved in China Center for Type Culture Collection (CCTCC in short) with a collection number of M 206139. The 16SrDNA gene sequence of the luminous bacterial is submitted to GenBank nucleotide sequence database with the accession number of EF017227. The bacterial strain has the characteristics of rapid growth, stable luminous property, low requirements for nutrients, and sensibility to the environmental pollutants, and the like; the luminous intensity thereof is confirmed to form a maximum peak at 474 nm by fluorescence scanning; and the luminous intensity inhibition ratio thereof is in direct ratio to the concentration of multiple tested environmental pollutants, thereby the quantitative detection of the tested environmental pollutants can be realized. The invention has the characteristics of low cost, simple and convenient operation, high sensitivity and the like on detecting the environmental pollutants, , thereby satisfying the requirements on rapid detection of the pollutants.

The present invention belongs to the technical field of organic photoelectric materials, and discloses a benzotriazolyl-containing copolymer, a preparation method and an application thereof. The benzotriazolyl-containing copolymer has the following general formula (I), wherein R1 and R2 are respectively C1-C20 alkyl, and n is an integer of 10-100. The benzotriazolyl-containing copolymer of the present invention has the following advantages that: a synthesis process is simple, manufacturing cost is reduced, and mass production of the benzotriazolyl-containing copolymer can be achieved; and electroluminescent devices of the benzotriazolyl-containing copolymer have characteristics of high purity and stable luminescence performance, and can be used as red-light emitting polymers.

The invention provides photobacterium leiognathi (Photobacterium leiognathi YL) from a marine environment and quantitative detection of environmental pollutants by using the strain. A strain of luminous bacterium YL from the marine environment is separated and purified, and the strain is Gram-negative bacterium and has a rod shape. The luminous bacterium YL is identified as the Photobacterium leiognathi according to a phylogenesis tree constructed according to a 16S rDNA sequencing result and physiological and biochemical results. The strain was preserved in China Center for Type Culture Collection (CCTCC) on 27, December, 2006, and the collection number is M 206139. The 16S rDNA gene sequence of the luminous bacterium has been submitted to a GenBank nucleotide sequence database, and the access number is EF017227. The strain has the characteristics of fast growth, stable luminous performance, low nutrition requirement, sensitivity to environmental pollutants, and the like, and the luminous intensity of the luminous bacterium is determined to form the maximum peak at 474nm through fluorescent scanning. The luminous intensity inhibition rate is in a direct proportion to the concentration of various environmental pollutants, and the quantitative detection of the environmental pollutants can be realized. The method for detecting the environmental pollutants by the strain has the characteristics that: the cost is low and the method is easy and convenient to operate, high in sensitivity and the like, and can meet the requirement on rapid detection of the pollutants.

The invention discloses a transparent ceramic material with mechanoluminescence property and a preparation method of the transparent ceramic material, aims to provide a pressure sensing material withthe mechanoluminescence property and belongs to the technical field of the transparent ceramic material. The general formula of chemical composition of the transparent ceramic material is Se(10-y-z)Al(6-x)BxO19:yEu<2+>,zRe<3+>, wherein Re is one or combination of more than one of Dy, Gd and Nd, value ranges of x, y and z are as follows: x is larger than or equal to 0.1 and smaller than or equal to0.5, y is larger than or equal to 0.01 and smaller than or equal to 0.05, and z is larger than or equal to 0.01 and smaller than or equal to 0.05. The luminescence center of the transparent ceramic material is Eu<2+> ions, and the mechanoluminescence effect of the transparent ceramic material can be effectively enhanced by introducing rare earth impurity ions such as Dy<3+>, Gd<3+> and Nd<3+>. The transparent ceramic material has the characteristics of high compressive strength, remarkable mechanoluminescence effect and the like and can be applied to pressure sensing components in pressure sensors.