155 results about "Red fluorescence" patented technology

The invention is about a method of marking ink which is only used to defend fake. The composition of it is: lipidol or lipid, surface active agent, integration agent, water, buffering agent. Their mass percents are: 1,2-hexylene glycol: 5%-15%, butanol: 1-5%, DH-1: 5-10%, EDTA: 0.1-0.5%, MS-1: 0.1-1%, water: the rest. The process is: a. dissolving the colorant in water, b. put the correct percent of 1,2-hexylene glycol and butanol into the solvent, then dropping the MS-1 and EDTA solution when mixing the solvent for 30-50 min, c. put the rest precent of water into the printing ink box. The picture and word would be shown red fluorescence in the UV but blank in the usual light.

The invention provides an alternating magnetic field quantum sensing detection device and method, and relates to the technical field of alternating magnetic field quantum sensors. The device comprises a sensitive module which comprises a diamond and a diamond NV color center located in the diamond; the microwave module is used for generating a target microwave signal; the light path module comprises a laser, an optical fiber and a photoelectric detector; the laser is arranged at one end of the fiber; the diamond is arranged at the other end of the fiber; a target laser signal generated by the laser is transmitted to the diamond through the optical fiber, so that the NV color center of the diamond generates red fluorescence under the action of the target laser signal and the target microwave signal; the photoelectric detector is used for collecting red fluorescence output from one end of the optical fiber; and the signal processing module is connected with the photoelectric detector and is used for converting the red fluorescence from an optical signal to an electric signal and determining the magnetic field environment of the position where the sensitive module is located according to the converted electric signal.

The invention relates to the related technical field of molecular biology and cell engineering, in particular to an FLP-IN-PIEC cell line and a construction method and application thereof, and the construction method comprises the following steps: step 1, constructing CRISPR / Cas9 site-specific cleavage plasmid containing a pig HIPP11 safety site sequence; step 2, constructing a donor plasmid Donor-FRT containing a homologous arm of a safety site of the HIPP11; 3, jointly transfecting plasmids in the step 1 and the step 2 into a porcine hip artery endothelial cell line (PIEC) to obtain an FLP-IN-PIEC cell line for expressing red fluorescence; and 4, under the action of Flp recombinase, transfecting an exogenous gene donor plasmid containing an FRT site to the FLP-IN-PIEC cell line obtained in the step 3, and driving the expression of a target gene through an optimized strong promoter to realize fixed-point transfer and efficient expression of the exogenous gene in the pig (PIEC) cell line. Different from an existing Flp-In system depending on a random integration strategy, the construction method disclosed by the invention emphasizes fixed-point integration and promoter optimization, and improves the homogeneity, stability and screening efficiency of exogenous gene expression.

The invention discloses a nopinic alkyl acridine fluorescent probe for detecting hydrazine and viscosity as well as a preparation method and application of the nopinic alkyl acridine fluorescent probe. The probe is 2-(2-(5-(4-(3, 3-dimethyl-1, 2, 3, 4-tetrahydro-2, 4-methylene acridine-9-yl) phenyl) furan-2-yl) vinyl)-1, 1, 3-trimethyl-1H-benzo [e] indoleonium iodized salt, which is called TA-PFV-BI for short. The probe can detect the viscosity of a solution, and red fluorescence emitted by the probe is gradually enhanced along with the improvement of the viscosity of the solution under the irradiation of ultraviolet light with the wavelength of 365 nm. The probe can also have a specific reaction with hydrazine, so that the fluorescence color of a probe solution is changed from colorless to bright blue, the detection range is 0-90 mu M, the response time is within 5 seconds, the detection limit is 4 * 10 <-8 > M, and the applicable pH range is 5-10. The probe TA-PFV-BI, as a bifunctional fluorescent probe capable of simultaneously detecting hydrazine and viscosity, has the advantages of good selectivity, high sensitivity, fast response, wide application range and the like, and shows a good application prospect.

This invention provides a method for constructing a fluorescently traced mouse model and its application in the sorting of Mcpt4-positive and negative mast cells. First, the Cre gene is knocked into the Mcpt4 gene sequence of C57BL / 6 mice using CRISPR / Cas9 technology. Then, through animal hybridization and Cre-loxP recombination technology, a fluorescently traced mouse model of Mcpt4-positive mast cells is obtained. The fluorescently traced mouse model possesses a dual-fluorescent reporter gene system consisting of the red fluorescent protein tdTomato and the green fluorescent protein ZsGreen. Mcpt4-positive mast cells exhibit red fluorescence, while other Mcpt4-negative cells exhibit green fluorescence. Using this fluorescently traced mouse model, Mcpt4-positive and negative mast cells can be rapidly, accurately, and effectively sorted, providing a reliable technical basis for exploring the roles and mechanisms of Mcpt4-positive and negative mast cells in immune responses.

The invention discloses a multi-emission composite nano ratiometric fluorescent probe for detecting fluoroquinolone antibiotics and a preparation method of the multi-emission composite nano ratiometric fluorescent probe. The CdTe-Tb-UMP composite nano ratiometric fluorescent probe with double ligands is prepared by taking metal terbium ions (Tb < 3 + >) as central ions and respectively taking uridine monophosphate (UMP) and CdTe quantum dots with red fluorescence emission as bridged ligands. ENR is further coordinated with Tb < 3 + >, energy is transferred to Tb < 3 + > through an antenna effect, so that characteristic green fluorescence of Tb < 3 + > is turned on, and fluorescence of CdTe quantum dots is almost kept unchanged. On the basis, a portable nursing point testing system is further constructed, and the portable nursing point testing system comprises an intelligent mobile phone detector and a wearable fingertip sensor integrated with a micro-fluidic chip and is used for on-site rapid detection of the ENR. The paper-based chip shows rapid and sensitive fluorescence response, and the detection limits of the spectrograph and the paper-based sensor on the ENR are 4.7 nM and 13.1 nM respectively. The probe can be applied to detection of ENR in actual environment water samples, food and drugs.

The present disclosure relates to a phosphor compound for diagnosing fire blight in fruit trees based on fluorescence and use thereof. The compound is capable of selectively detecting Erwinia amylovora, the causal pathogen of fire blight in fruit trees, and emits red fluorescence in response. Due to its rapid diagnostic response and high sensitivity, the compound can be effectively used for diagnosing fire blight in fruit trees through various simple methods such as spraying or swabbing, without the need for specialized equipment.

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.

The application relates to the technical field of light-emitting materials, and discloses a red fluorescent glass ceramic material, which has a general chemical formula of xMgO:yAl2O3:zSiO2:mEu 2+ Wherein, x, y, z and m respectively represent the mole fraction of corresponding elements, and 0.5<=x<=3, 0.5<=y<=3.5, 2<=z<=6 and 0.005<=m<=0.08; the red fluorescent glass ceramic material is prepared by laser sintering and reduction heat treatment. The preparation method is short in time consumption and low in energy consumption; the prepared red fluorescent glass ceramic has excellent light-emitting performance under blue light excitation and can be directly used as a fluorescent conversion element.

This invention belongs to the field of biotechnology and discloses a dry film stabilizer, cytoplasmic antigen dry films, their preparation methods, and applications. The dry film stabilizer includes polyethylene glycol, trehalose, BSA, melatonin, and Tween-20. Cytoplasmic antigen dry films are prepared using this stabilizer and applied in CBA detection. This dry film stabilizer has good permeability, penetrating the cell membrane to enter the cell interior, providing protection both inside and outside the cell. It also possesses moisturizing and antioxidant properties, preventing cell deformation and shedding of the cell fixation layer, effectively maintaining the stability and reliability of intracellular antigen proteins. The prepared cytoplasmic antigen dry films can be stored long-term without damaging the antigenicity of cytoplasmic signal indicators. When detecting positive samples, strong and numerous green filamentous fluorescence signals are observed in the cytoplasm, with consistent green and red fluorescence intensities. Software synthesis reveals co-localization of green and red antigen fluorescence.

The invention discloses a Mn < 4 + >-doped rubidium lithium fluorogallate monocrystal red-light-emitting material as well as a preparation method and application thereof. The Mn < 4 + >-doped rubidium lithium fluorogallate single-crystal red-light-emitting material is a single-crystal material, and the crystal grain size is 0.01-2 mm. The chemical formula of the material is Rb2LiGaF6: xMn < 4 + >, wherein x is equal to 0.5-9%. A fluoride single-crystal red light material is prepared by adopting a saturated solution crystallization method, and the Mn < 4 + > doped rubidium lithium fluorogallate single-crystal red light material, a yellow light emitting material or a green light emitting material and a blue light InGaN chip are combined and packaged to obtain a white light LED device. The Mn < 4 + >-doped rubidium lithium fluorogallate monocrystal red light material prepared by the invention can be efficiently activated by purple light and blue light, the strongest excitation wavelength is 467 nm, red fluorescence with high brightness and high color purity is emitted, the color purity is 99.9%, the strongest emission wavelength is 627 nm, the full width at half maximum is 11.3 nm, the color coordinate x is greater than 0.7, and the fluorescence lifetime is 3.44 ms. The fluorescent material can be used for a wide-color-gamut display device, reaches 109.7% NTSC, and is superior to a commercial K2SiF6: Mn < 4 + > packaged device.

The invention discloses a carbon nanodot as well as a preparation method and application thereof, and relates to the technical field of carbon nanomaterials. The carbon nanodots are prepared from raw materials including nicotinamide, urea and citric acid or a derivative thereof through solvent heat treatment, and the derivative of the citric acid is selected from citrate, a citric acid hydrate or a hydrate of the citrate. According to the invention, nicotinamide is used as a precursor to synthesize the carbon nanodot under solvent heat treatment, so that the carbon nanodot integrates intrinsic biological activity, efficient photothermal conversion capability and red fluorescence imaging function at the same time, and the limitation of a single therapy is overcome through multifunctional synergistic therapy. In addition, the carbon nanodot provided by the invention has extremely high biological safety.

The utility model belongs to the technical field of lighting devices, and particularly provides a golden yellow light emitting device which comprises a blue light emitting unit, a red light emitting unit and fluorescent glue, the fluorescent glue covers the blue light emitting unit and the red light emitting unit, and yellow fluorescent powder and / or red fluorescent powder are / is contained in the fluorescent glue. Blue light emitted by the blue light emitting unit can excite yellow fluorescent powder in the fluorescent glue to generate yellow light, and then the yellow light is mixed with red light emitted by the red light emitting unit to obtain golden yellow light with the color temperature ranging from 1700 K to 2500 K. Compared with a traditional white light LED lamp, the blue light component and the color temperature can be effectively reduced, and the service life of the LED lamp is prolonged. The LED lamp improves the penetrating power of light rays under severe weather conditions such as rain, fog and dust and the road surface reflection efficiency, is particularly suitable for municipal lighting such as urban road lighting and tunnel lighting, enables a driver to see pedestrians and obstacles on the road surface more easily and clearly, and improves the driving safety coefficient.

The invention belongs to the technical field of transgenic and biomedical research tools, and particularly relates to a method for constructing a transgenic fish system based on a Tol2 transposon system, which comprises the following steps: constructing a myo6b-lhfpl5b-DsRed plasmid by using myo6b as a promoter, lhfpl5b as a target gene and DsRed as a red fluorescent protein tag through a microinjection method, and constructing a Tol2 transposon system-based transgenic fish system. Co-injecting the plasmid containing the Tol2 transposase mRNA and the Tol2 transposase mRNA into a fertilized egg of an AB zebra fish strain, and screening generation by generation to obtain a transgenic fish strain with stable inheritance MET channel gene lhfpl5b marked hair cells. The spatio-temporal dynamic visualization of the living whole fish to the lhfpl5b is realized, the deafness-causing molecular pathway is clarified, and an in-vivo platform is provided for drug screening and intervention strategies.

The invention relates to the technical field of display, and provides an LED packaging device and a backlight module. The LED packaging device comprises: a substrate; the red light generation component comprises a first blue light LED chip and a red wavelength conversion material used for converting blue light emitted by the first blue light LED chip into red light, and is arranged in the first optical cavity on the substrate; the red wavelength conversion material is a mixture formed by mixing nitride-based red fluorescent powder and fluoride-based red fluorescent powder according to a set proportion, and the emission peak wavelength of the nitride-based red fluorescent powder is 600-670 nm; and the blue light generation component and the green light generation component are respectively used for generating blue light and green light and are arranged in other optical cavities except the first optical cavity on the substrate.

The application belongs to the technical field of red fluorescent powder materials for display, and particularly relates to Mn 4+ A surface treatment method of activated fluoride fluorescent powder, modified fluorescent powder and application. The method is to mix the activated fluoride fluorescent powder with an aqueous solution of aminotri (methylenephosphonic acid), stir and react, centrifugally collect the precipitate, wash with boiling water, dry to obtain a fluoride fluorescent powder precursor product; mix the precursor product with ethanol, stir, centrifugally collect the precipitate, wash and dry to obtain the surface-treated fluoride fluorescent powder. 4+ The activated fluoride fluorescent powder is mixed with an aqueous solution of aminotri (methylenephosphonic acid), stirred and reacted, centrifugally collected, washed with boiling water, dried to obtain a fluoride fluorescent powder precursor product; the precursor product is mixed with ethanol, stirred, centrifugally collected, washed and dried to obtain the surface-treated fluoride fluorescent powder. 4+ The activated fluoride fluorescent powder is mixed with an aqueous solution of aminotri (methylenephosphonic acid), stirred and reacted, centrifugally collected, washed with boiling water, dried to obtain a fluoride fluorescent powder precursor product; the precursor product is mixed with ethanol, stirred, centrifugally collected, washed and dried to obtain the surface-treated fluoride fluorescent powder. 2+ The activated fluoride fluorescent powder is mixed with an aqueous solution of aminotri (methylenephosphonic acid), stirred and reacted, centrifugally collected, washed with boiling water, dried to obtain a fluoride fluorescent powder precursor product; the precursor product is mixed with ethanol, stirred, centrifugally collected, washed and dried to obtain the surface-treated fluoride fluorescent powder. The KSFM fluorescent powder prepared in the application has good water resistance and light emitting characteristics, and has a wide application prospect.

The utility model relates to the technical field of LED light sources, and discloses an LED light source capable of improving spectral continuity, which comprises a substrate, the substrate is provided with a light-emitting area, and the light-emitting area is provided with a plurality of short-wave blue light-emitting chips, a plurality of long-wave blue light-emitting chips and a plurality of red light-emitting chips; the light-emitting area is filled with a fluorescent glue layer; the fluorescent glue layer covers the plurality of short-wave blue light-emitting chips, the plurality of long-wave blue light-emitting chips and the plurality of red light-emitting chips; green fluorescent powder and red fluorescent powder are mixed in the fluorescent glue layer; in the process that light rays emitted by the short-wave blue light emitting chips, the long-wave blue light emitting chips and the red light emitting chips penetrate through the fluorescent glue layer, green fluorescent powder and red fluorescent powder are excited respectively, so that the emitted light rays are high in spectral continuity and have the advantages of being high in color temperature, low in blue light, high in color rendition degree and the like; the light emitted by the LED light source is closer to the solar spectrum, and the color rendering index is higher.

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.

The invention relates to the technical field of biology, in particular to a red fluorescent protein mCrimsonX as well as a construction method and application thereof. The invention relates to a red fluorescent protein mCrimson X. The mutant amino acids of the red fluorescent protein mCrimson X relative to Crimson comprise N8E, R10P, M15L, S18T, I70V, Y72H, A74K, D75G, F79Y, T94M, Y96F, E111Q, E114V, V116I, V119A, M147I, I160M, N173S, T177E, H193Y and V195I. The invention further discloses a preparation method of the red fluorescent protein mCrimson X. The preparation method has the advantages that mCrimsonX is high-performance long-wavelength fluorescent protein in a visible region; special proteins which cannot be accurately marked by other red fluorescent proteins can be marked; the monomer property is very good, and the extinction coefficient and the quantum yield are relatively high. The method can be used for constructing cell function probes and is wide in application range.

The invention relates to the field of fluorescent probes, in particular to a CO fluorescent probe, a preparation method of the CO fluorescent probe and application of the CO fluorescent probe in a reagent for detecting inflammatory reaction in a living body. The probe takes DBX-OH with a push-pull electronic structure as a red fluorophore, and is connected with a recognition unit allyl chloroformate through a phenolic hydroxyl group of the DBX-OH. The detection mechanism is as follows: when the probe does not react with CO, the fluorescence of the probe is in a closed state due to a photoinduced electron transfer effect; when the allyl chloroformate and CO are subjected to specific reaction under the catalysis of Pd (0), the allyl chloroformate chain is broken and separated, and the PET process is inhibited, so that the strong red fluorescence of DBX-OH is recovered, and the'open 'type detection is realized. The probe has the outstanding advantages of red light emission, excellent water solubility, extremely low detection limit and the like. The method is successfully applied to in-vivo inflammation detection of mouse and zebra fish models, and the dual application potential of the method in the field of biomedical research is highlighted.

The application relates to a high-heat-resistance red light-emitting material and a preparation method and application thereof, and the chemical general formula of the material is CaLaTiTaO7: x Eu 3+ , and 0 < x <= 0.8; the material is synthesized by a high-temperature solid-phase method, CaCO3, La2O3, TiO2, Ta2O5 and Eu2O3 are weighed according to the stoichiometric ratio, are ground and are calcined, the sintered product is cooled and is finely ground to obtain the material; the CaLaTiTaO7 material is first selected as a matrix to synthesize a CaLaTiTaO7: x Eu 3+ series red fluorescent powder, under 393 nm near-ultraviolet light excitation, the material presents characteristic red light emission of Eu 3+ ions at 613 nm. The CLTT:0.6Eu 3+ / PDMS flexible composite thin film constructed by the material can maintain structural integrity and light emission stability in an acid-base environment, and an LED device prepared by using the material has good white light emission characteristics.

The invention relates to the field of protein detection, in particular to a method for detecting phosphorylated Tau-217 protein in urine of an Alzheimer's disease patient, which comprises the following steps of: 1, collecting fresh urine in the morning by using a urine collecting container, and 2, taking out 100 microliters of urine by using a transfer pipette and adding the urine into a 5.0 ml centrifugal tube; step 3, adding 4.9 ml of a urine diluent to dilute the urine; and step 4, prefabricating tracing fluorescent microspheres and enrichment microspheres in the centrifugal tube. Step 5, repeatedly reversing and uniformly mixing, and reacting at room temperature for 8-12 hours; step 5, placing the reaction tube on a separation test tube rack with a magnet for more than 20 minutes; step 6, irradiating the test tube by using a highlighter with the wavelength of about 340nm in a dark environment to judge a result; and step 7, if a red fluorescent dot appears near the magnet in the test tube, the result is positive, otherwise, the result is negative, and the result can also be judged by measuring a fluorescence value through a luminoscope with the wavelength of 340nm. Finally, the phosphorylated Tau-217 protein is detected, and the operation threshold and the economic cost are reduced.

The application discloses a norpinane alkyl carbazole enhanced fluorescent probe for detecting viscosity and a preparation method and application thereof. The application takes norpinone as raw material, and performs a cyclization reaction with phenylhydrazine hydrochloride to obtain a compound TC; the compound TC is subjected to N-alkylation reaction with N,N-dimethyl-3-chloropropylamine to obtain a compound TC-AP; the compound TC-AP is subjected to formylation reaction with phosphorus oxychloride to obtain a compound TC-AP-F; and the compound TC-AP-F is subjected to condensation reaction with 4-(cyanomethyl)-1-methylpyridin-1-yl iodide to obtain a fluorescent probe TC-AP-A. The probe TC-AP-A can specifically recognize viscosity, and the red fluorescence of the solution is gradually enhanced with the continuous increase of the viscosity of the system, and the minimum detection limit is 1.41 cP. The probe has the advantages of simple synthesis, good selectivity, high sensitivity, good biocompatibility, low toxicity and the like, and has a good application prospect.

An LED light source comprises a light-emitting chip and a lens. The light-emitting spectrum of the light-emitting chip is double-crest, and the light-emitting chip is used for emitting blue light and green light. The lens covers the light-emitting chip and is doped with red fluorescent powder. Blue light and green light emitted by the light-emitting chip pass through the lens doped with red fluorescent powder to form white light. In addition, the red fluorescent powder is, for example, fluoride (KSiF) red fluorescent powder, nitride (Nitride) red fluorescent powder or a mixture of the fluoride (KSiF) red fluorescent powder and the nitride (Nitride) red fluorescent powder. The red fluorescent powder is doped in the lens, so that the light-emitting chip in a double-crest form can emit light with an expected specific wavelength band.

An LED light source, comprising red light lamp beads (11), green light chips (12), blue light chips (13), purple light chips (14), amber light lamp beads (15), cyan light chips (16), and lemon light lamp beads (17). Each of the red light lamp beads (11) comprises a first light-emitting chip and red fluorescent powder covering the first light-emitting chip, each of the amber light lamp beads (15) comprises a second light-emitting chip and amber fluorescent powder covering the second light-emitting chip, and each of the lemon light lamp beads (17) comprises a third light-emitting chip and lemon fluorescent powder covering the third light-emitting chip. By using exciting fluorescent powder to emit light, the brightness of light is improved, the full width at half maximum is increased, and better color continuity is achieved; by using chips to emit light, the purity of these colored light rays is ensured, meeting the requirements for high-purity colored light output; and through the matching and combination of seven colors of light, wider color gamut coverage and smoother color transition are achieved, enabling generation of a spectral distribution closer to that of sunlight, with a measured spectral similarity index (SSI) exceeding 90.

The invention relates to the technical field of textile fiber preparation, in particular to a preparation method of colorful chitosan-based fluorescent anti-counterfeiting nanofibers. The method comprises the following steps: (1) preparing a spiropyrane (SP) labeled red fluorescent chitosan (CS) solid material SP-CS; (2) preparing a perylene (Perylene) labeled green fluorescent chitosan solid material Perylene-CS (Chlorine Sulfonate); (3) preparing a tetraphenylethylene (TPE) labeled blue fluorescent chitosan (CS) solid material TPE-CS; (4) blending the SP-CS dilute acetic acid solution, the Perylene-CS dilute acetic acid solution, the TPE-CS dilute acetic acid solution and the polyvinyl alcohol (PVA) solution according to different proportions to prepare a spinning solution; and (5) preparing the colorful chitosan-based fluorescent anti-counterfeiting nanofiber through electrostatic spinning. The series of chitosan-based anti-counterfeiting nanofibers prepared by the invention can emit fluorescence in various colors such as orange, yellow, cyan and purple under the excitation of ultraviolet light, the diameter distribution of the fibers is uniform, the surface is smooth, and the average diameter is within the range of 110-150nm.

The utility model discloses a wavelength conversion assembly and lighting equipment. The wavelength conversion assembly comprises a supporting piece, a first wavelength conversion layer and a second wavelength conversion layer. Wherein the first wavelength conversion layer comprises a bearing part and a protruding part which are connected with each other; the bearing part is arranged on the supporting piece, and the side, away from the supporting piece, of the bearing part is provided with a first area and a second area, the protruding part is located in the first area and protrudes relative to the bearing part. The second wavelength conversion layer is wound on the periphery of the protruding part and covers the second area; wherein the second wavelength conversion layer comprises red fluorescent particles. The second wavelength conversion layer is doped with the red fluorescent particles, so that the specified laser can be converted into red fluorescence under the excitation of the red fluorescent particles. When the wavelength conversion assembly is configured in the lighting equipment, the lighting light generated by the lighting equipment can be mixed with the red light component, so that the color rendering index of the lighting light is improved, and the lighting equipment can meet the application scene with the high color rendering index.

The invention discloses a luminescent material for plant growth and a preparation method and application thereof, and belongs to the technical field of luminescent materials and plant growth, the luminescent material is dark red fluorescent powder, the molecular formula of the dark red fluorescent powder is SrLa2Mg2W2 (O1-zFz) 12: xMn < 4 + >, yGa < 3 + >, 0 * 0.2, 0 * 0.2 and 0 * 0.2. The light-emitting material and macromolecular resin are molded and processed to obtain the sunlight conversion plate for plant growth. According to the luminescent material for plant growth and the preparation method and application thereof, the obtained luminescent material can realize high-brightness dark red light emission, the fluorescence quantum efficiency is high, the matching degree with a plant pigment absorption spectrum is high, and a prepared sunlight conversion plate is green, environment-friendly, long in service life, good in stability and uniform in fluorescent powder distribution; the fertilizer can be used in fields and can promote plant growth.

The invention discloses a fluorescent anti-counterfeiting material with time sequence property and application thereof, and belongs to the field of organic fluorescent anti-counterfeiting materials. The preparation method comprises the following steps: preparing a precursor mixture from a crosslinkable polymer monomer, biphenyl micromolecules, an initiator and a regulator, attaching the precursor mixture to a substrate in manners such as printing to form a pattern, and carrying out photo-excitation photo-crosslinking reaction or thermal initiation crosslinking curing to obtain the fluorescent material. The fluorescent material presents a continuous'no light emission-red fluorescence-blue light 'dynamic time sequence process under detection light sources such as ultraviolet light and the like, and the process can be applied as an anti-counterfeiting feature. Based on a dynamic luminescence process depending on chemical reaction change, the core defect that a traditional anti-counterfeiting material is statically and easily copied under reverse engineering attack is overcome, and the anti-counterfeiting safety can be greatly improved; and the large-scale application requirements of different anti-counterfeiting scenes such as high-end certificate ticket business identification, food and drug safety, commodity packaging and luxury traceability can be met.

This invention discloses carbon nanodots, their preparation method, and their applications, relating to the field of carbon nanomaterials technology. The carbon nanodots are prepared by solvothermal treatment of nicotinamide, urea, and citric acid or its derivatives. The citric acid derivative is selected from citrate, citric acid hydrate, or citrate hydrate. This invention synthesizes carbon nanodots using nicotinamide as a precursor under solvothermal treatment, simultaneously integrating intrinsic bioactivity, efficient photothermal conversion capability, and red fluorescence imaging function. This multifunctional synergistic therapy overcomes the limitations of single-therapy approaches. Furthermore, the carbon nanodots provided by this invention exhibit extremely high biocompatibility.