76results about How to "Strong luminous ability" patented technology

The invention relates to preparation of protamine gold nanoclusters and application in analogue enzyme color comparison and fluorescence detection. The protamine gold nanoclusters not only have activity of horseradish peroxidase and oxidase, but also have fluorescent characteristic. Hereby, a protamine gold nanocluster analogue enzyme visual color comparator and a fluorescence sensor are established respectively and are used for detecting heavy metal ions. The protamine gold nanoclusters are prepared simply and conveniently, are low in cost, and have excellent fluorescence stability and chemical stability, and the shortcomings that fluorescence of traditional dyestuff is short in service life, photobleaching occurs easily and the like can be overcome; a fluorescence method is high in sensitivity and good in stability, and expensive instruments are not required; and analogue enzyme catalytic color comparison is sensitive and environment-friendly, and can be used for field real-time monitoring. The protamine gold nanoclusters are expected to be expanded and applied to detection and analysis of related substances in the fields of environment and biomedicines and disease markers, and have wide application prospect.

The invention relates to an electroluminescence porous silicon and relative preparation method, belonging to the electroluminescence porous silicon technique. Said invention is formed by a silicon base; a porous silicon layer above one side of silicon base; and a silicon line layer above porous silicon layer whose average diameter is 200-500 nanometers and length is 2-10 microns. The preparation method comprises: putting the washed silicon plate into the water solution of fluohydric acid and silver nitrate to be chemical etched; putting the etched silicon plate into the water solution of fluohydric acid and ethanol to be electrical chemical etched to attain the electroluminescence porous silicon. The invention has simple preparation process, and the electroluminescence porous silicon has a silicon line layer above the porous silicon layer with higher lighting ability than present electroluminescence porous silicon.

The invention discloses an application of an electrochemiluminescence biosensor based on cytosine (C)-containing cyclic DNA sequences where in-situ reduced Ag nano-clusters are enriched as signal probes and adopting dual amplification strategy to detection of target thrombin. According to the technical scheme, DNA cleavage enzyme with hairpin DNA recognition capability and catalysis effect is designed, when target thrombin exists, hairpin DNA is opened, and substrate DNA is cleaved under the action of Zn<2+>; a large quantity of cytosine (C)-containing cyclic DNA sequences are aggregated through HCR (hybridization chain reaction), in-situ reduction of AgNO3 is performed on the electrode surface by NaBH4, a large quantity of Ag nano-clusters are formed, and the electrochemiluminescence biosensor with dual amplification effect is prepared. The sensor is subjected to luminescence detection, and a linear relation is formed between light-emitting signals and concentration of a to-be-testedsample. The Ag nano-cluster signal probes and the DNA dual amplification technology are combined for rapid and high-sensitivity detection of thrombin, and the electrochemiluminescence biosensor has great application potential in early clinical analysis and detection.

The invention provides an organic luminous material and a preparation method thereof, and relates to an organic silicon polymer. Raw materials of the organic luminous material comprise metallic organic substance and polycarbosilane. The preparation method comprises the following steps of: putting polydimethylsiloxane into a reaction kettle, heating the polydimethylsiloxane under the protection ofargon, inflating the argon to the reaction kettle, adding n-hexane into the reaction kettle to dissolve the product after the temperature in the reaction kettle is naturally cooled to room temperature, filtering the product, removing the n-hexane in vacuum to obtain the polycarbosilane, soaking the ground polycarbosilane into ethanol, flushing the insoluble substances by using the ethanol and then drying the insoluble substances in vacuum; and pouring the polycarbosilane powder and the metallic organic substance powder into a three-necked bottle, heating the mixed powder to between 150 and 160 DEG C under the protective atmosphere of argon, preserving the heat for 1 to 1.5 hours, heating the mixed powder to between 260 and 270 DEG C, preserving the heat for 1 to 1.5 hours, dissolving the product by using the dry n-hexane after the reaction is finished and the product is cooled, filtering the product to remove the insoluble substances, and finally distilling the product with reduced pressure to obtain the powdery solid organic luminous material.

The invention discloses a preparation method of a luminous decorative plate. The preparation method comprises the following steps: 1) preparing material: water-based luminous ink is prepared by the following raw materials in percentage by weight: a material A composed of 5-20% of water-based acrylic resin, 8-20% of luminous powder, 0.5-2% of a dispersant, 0.2-0.5% of a defoaming agent and 15-20% of tap water, a material B composed of 10-20% of a casein solution, 0.3-0.5% of a defoaming agent, 0.5-2% of an anti-settling agent, 5-10% of ethanol, 2-5% of propylene glycol, 20-40% of tap water and 1-2% of a leveling wetting agent and a material C composed of 0.5-2% of a thickening agent and 0.5-1% of a pH value regulator; 2) printing; 3) dipping; 4) pressing, so as to obtain the luminous decorative plate. The luminous decorative plate prepared through the method provided by the invention has the effect of environmental protection and a long-term luminous function, and further has the characteristics of light fastness, scratch resistance, wear resistance, and natural and vivid texture.

A phosphor for vacuum ultraviolet ray-excited light-emitting elements which comprises a compound represented by the following formula (I): <?in-line-formulae description="In-line Formulae" end="lead"?>M¹_1-a-b-c-dM²_aM³_bM⁴_1-eM⁵_11-fM⁶_c-d+e+fO_19-(b+c+f)/2 (I)<?in-line-formulae description="In-line Formulae" end="tail"?> (wherein M¹ is at least one element selected from the group consisting of La, Y and Gd, M² is at least one element selected from the group consisting of Ce and Tb, M³ is at least one element selected from the group consisting of Ca, Sr and Ba, M⁴ is at least one element selected from the group consisting of Mg and Zn, M⁵ is at least one element selected from the group consisting of Al and Ga, and M⁶ is at least one element selected from the group consisting of Mn and Eu, and a, b, c, d, e and f are numbers satisfying the conditions of 0<=a<1, 0<=b<=0.6, 0<=c<=0.5, 0<=d<=0.5, 0<=e<1, 0<=f<1, a+b+c+d<1 and 0<c+d+e+f), respectively.

The present invention discloses a preparation method of a PVC composite heat stabilizer having luminescent property and stability. The luminescence composite heat stabilizer is prepared by taking dibasic lead phosphite, tribasic lead sulfate, epoxy calcium soap, and epoxy zinc soap as main stabilizers, taking aromatic carboxylic acid rare earth as an auxiliary stabilizer and a luminescent component, then adding an appropriate amount of auxiliary stabilizers, antioxidants, and lubricants, and optimistically complexing through the pre-preparation of aromatic carboxylic rare earth and the preparation of luminescence composite heat stabilizer according to the synergistic effect. The luminescence composite heat stabilizer of the present invention has excellent heat stability, and also a good luminescent property, and can be used for preparing various hard and soft PVC photoluminescence materials.

The invention discloses a method for preparing a steady-persistence luminous ceramic membrane through aluminum or aluminum alloy surface micro-arc oxidation. The method comprises the following steps that 1, a strontium salt system electrolytic solution is prepared by taking deionized water as a solvent, wherein the electrolytic solution contains strontium salt, ammonium bifluoride, ammonium fluoride, diammonium hydrogen phosphate, monopotassium phosphate and glycerol; and 2, aluminum or an aluminum alloy serves as an anode; a stainless steel plate serves as a cathode; a micro-arc oxidation pulse power supply is adopted; micro-arc oxidation treatment is performed at pulse frequency of 450-700Hz and at a duty ratio of 10-25%; in-situ growth is performed on the surface of aluminum or the aluminum alloy; and the steady-persistence luminous ceramic membrane containing SrAl2O4 is obtained. A growth rate of the ceramic membrane prepared with the method reaches above 3 micrometers/min; the neutral NaCl salt mist corrosion resistance of the ceramic membrane reaches above 600h; and the microhardness of the ceramic membrane can reach above 1000HV.

The invention discloses a manufacturing method for a single ZnO micron wire homojunction light emitting diode. According to the manufacturing method, a simple CVD method is adopted, parameters such as growth time are controlled, a layer of highly-oriented undoped n-type ZnO micron wires grow on a substrate at first, and then a layer of Sb-doped p-type ZnO micron wires grow on the highly-oriented undoped n-type ZnO micron wires, so that the homojunction of the ZnO micron wires is manufactured; a single micron wire is stripped from the bottom of the sample substrate, and electrodes are manufactured at the two ends of the micron wire, wherein the diameter of the micron wire is 10-100 micrometers, and the length of the micron wire is 1-20mm. The manufacturing process is simple, the cost is low, and device test results show that the device has the good rectification characteristic and the higher light emitting property.

The invention provides a lanthanum titanate red fluorescent material taking Sm<3+> as luminescence center, and a preparation method thereof, relating to the technical field of a luminescence material. The chemical constitution of the lanthanum titanate red fluorescent material is SmxLa2-xTiO5, and the preparation method comprises the following steps: firstly preparing lanthanum titanate gel, doping Sm<3+> ions, then sintering the gel at high temperature and preparing corresponding powder; and according to the luminescence intensity of the fluorescent powder, finally determining the optimal doping amount of the samarium at 3%. According to the lanthanum titanate red fluorescent material, the technology is simple, safe and easy to control, the prepared powder is different from the structures of perovskite and spinel luminescent matrix, and is a novel photoluminescent material matrix, and can provide new expand space for the rare earth photoluminescent material.

The present invention relates to a novel compound and an organic electroluminescent device comprising the same. The compound according to the present invention is used for an organic layer, preferablya luminous layer, of an organic electroluminescent device, thereby improving the luminous efficiency, driving voltage, lifetime, etc. of the organic electroluminescent device.

The invention discloses narrow-particle size distribution PbS quantum dot-doped glass. The narrow-particle size distribution PbS quantum dot-doped glass comprises a glass matrix and PbS quantum dots doped into the glass matrix, wherein the glass matrix comprises the following components: 45-55 mol% of SiO2, 20-30 mol% of Na2O, 3-10 mol% of Al2O3, 8-12 mol% of MO, 5-8 mol% of ZnO, 1-6 mol% of ZnS and 0.1-1 mol% of PbO, the sum is 100 mol%; M represents an alkaline earth element. Through the components and the preparation method of the glass provided by the invention, controllable preparation of the PbS quantum dots with the particle size distribution of 4.91-12.37% in the glass matrix can be achieved; the particle sizes of the prepared quantum dots in the glass matrix are adjustable, and adjustable fluorescence of the PbS quantum dot-doped glass in an infrared band can be achieved, so that the narrow-particle size distribution PbS quantum dot-doped glass is a light-emitting material with a very good application prospect.

The present invention relates to a novel compound and an organic electroluminescent device comprising the same. The compound according to the present invention is employed in an organic layer of an organic electroluminescent device, preferably in a light-emitting layer, an emission auxiliary layer, an electron transport auxiliary layer or an electron transport layer, thus improving the emission efficiency, driving voltage, lifespan, etc. in the organic electroluminescent device.

The present invention relates to a novel compound and an organic electroluminescent device comprising the same. A compound according to the present invention is used for an organic layer, preferably alight emitting layer, of an organic electroluminescent device, and thus can improve luminous efficiency, driving voltage, and lifespan of the organic electroluminescent device.

The invention discloses a high-heat-dissipation luminous keyboard membrane and a preparation method thereof. The high-heat-dissipation luminous keyboard membrane is prepared from the following components of polycarbonate, polyacrylate, luminous powder, graphene, modified attapulgite clay, nanometer titanium dioxide, magnetic component, anti-aging agent, antioxidant and flame retardant. The preparation method comprises the following steps: adding the polycarbonate and the polyacrylate into a reaction kettle, heating, melting, adding the graphene, mixing and reacting for 1 to 2 hours; adding the luminous powder, the anti-aging agent, the antioxidant and the flame retardant, stirring uniformly, and performing shearing dispersion; adding the modified attapulgite clay and the nanometer titanium dioxide, stirring uniformly, placing a mixture into an ultrasonic environment and holding for 10 to 20 minutes, adding the magnetic component, mixing uniformly, and placing a mixture into a membrane forming machine for membrane forming to obtain the keyboard membrane. The keyboard membrane has higher heat dissipation performance and higher luminous characteristic, so that a computer can be operated without turning on a light at night, and the energy consumption is lowered greatly; the high-heat-dissipation luminous keyboard membrane has better significance.

The invention discloses a silicate phosphor and a preparation method and application thereof. By adjusting formula composition, selecting raw materials and adding rare earth Sm<3+> or Bi3<+> or Gd3<+> into an activator with a rare earth activator Eu2<+> being a main ingredient, the emission strength of a fluorescent material is improved through the energy transmission effect between Sm<3+> or Gd3<+> or Bi3<+> and Eu3<+>; secondly, in the process of generating a precursor, Ag nano-particles are added, fluorescence enhancement is realized according to the Ag nanometer fluorescence enhancement principle, and therefore the prepared phosphor is higher in luminescent property.

The invention discloses a high-performance Cr3+ and Nd3+ compositely doped GSGG laser ceramic and a preparation method of the ceramic. The preparation method comprises the following steps that high-purity Cr3O3, Nd2O3, Gd2O3, Sc2O3 and Ca2O3 powder is taken as the raw materials, the raw materials are compounded according to the stoichiometric ratio of the raw materials, a nitrate solution is formed after uniform mixing, the raw materials are injected into the nitrate solution by one step with ammonium hydroxide as a precipitant, at the same time, full stirring is performed, and a sediment solution is formed by aging; the sediment solution is filtered, washed and dried to obtain a precursor powder body, calcination is performed at the temperature of 800 DEG C to 1,100 DEG C in the air atmosphere, and a Cr3+ and Nd3+: GSGG nano-powder body is obtained; the nano-powder body is subjected to isostatic cool pressing after being dry-pressed, vacuum sintering is performed, a sample is taken out and ground and polished after furnace temperature is cooled to the room temperature, and the Cr3+ and Nd3+: GSGG laser ceramic is obtained. Compared with single crystals of the system, the preparation technology is simple, and the comprehensive performance of the material can be improved.

The invention belongs to the technical field of high polymer chemical science, and particularly discloses a cross conjugated polymer, a method for preparing the same and application of the cross conjugated polymer. The cross conjugated polymer prepared by the aid of the method is an aromatic cross conjugated polymer or a heteroatom-containing aromatic cross conjugated polymer. The cross conjugatedpolymer, the method and the application have the advantages that the cross conjugated polymer is prepared by means of one-step coupling reaction, ultraviolet absorption can be carried out by the cross conjugated polymer in the ultraviolet and purple light ranges, the cross conjugated polymer is high in luminescence ability, and the luminescence range of the cross conjugated polymer covers light from purple light to yellow light; films can be easily formed from the cross conjugated polymer, and the cross conjugated polymer is good in processing property, is extremely high in luminescence ability even when the cross conjugated polymer is in solid states and accordingly has a broad application prospect in the aspect of optics.

The invention discloses a side-chain aryl conjugated organic light-emitting material and a preparation method thereof and relates to an organic light-emitting material. The preparation method comprises the steps of synthesizing polycarbosilane; removing polycarbosilane small molecule; and synthesizing side chain aryl conjugated polycarbosilane. The method specifically comprises the steps of reacting poly(dimethylsiloxane) as a raw material in a high pressure reaction kettle to obtain polycarbosilane, then defoaming polycarbosilane small molecules, and then reacting a small amount of aryl (Pn) organic matters and defoamed polycarbosilane to obtain the solid side-chain aryl conjugated polycarbosilane. The antioxidant crosslinking performance, anti-ultraviolet aging performance and thermal stability are improved. Although the reacted system has a conjugated structure, no rigid planar structure and is lack of an electron donating group, the reaction system still shows relatively strong luminescent performance. After a synthesized product is excited by ultraviolet light of which the wavelength is 350nm, the synthesized product has blue-violet light emission at 410nm, the emission purity is high, no miscellaneous peak is generated and good antioxidant crosslinking performance, anti-ultraviolet aging performance and thermal stability are achieved.

The invention belongs to the technical field of preparation and application of functional nano materials, a gold nano-cluster synthesized by taking cellulase as a template is successfully prepared byadopting a one-pot method, the nano-cluster shows red fluorescence under the irradiation of a 365nm ultraviolet lamp, the maximum excitation wavelength is 560nm, and the maximum emission wavelength is680nm. The invention also provides a method for fluorescence quantitative detection of metal ions, papain and ascorbic acid by utilizing the cellulase gold nano-cluster. The method is simple and convenient to operate, short in time consumption and easy to realize. The cellulase-coated gold nano-cluster prepared by the invention not only enhances the activity of the cellulase, but also can be applied to the aspects of environmental monitoring, food and medicine, agricultural production and the like on the basis of the capability of tracking biomolecules by strong red fluorescence.