23760results about "Luminescent compositions" patented technology

An organic molecule is disclosed comprising:a first chemical moiety with a structure of formula I,andtwo second chemical moieties, each at each occurrence independently from another consisting of a structure of formula II,wherein the first chemical moiety is linked to each of the two second chemical moieties via a single bond.

The invention discloses a near-infrared emission aggregation-induced emission organic photo-thermal molecule and a preparation method and application thereof, and belongs to the technical field of biomedicine, and the structure is shown as a formula I: # imgabs0 # (I), wherein R1, R2, R3, R4, R5 and R6 are independently selected from groups containing alkyl chains. The invention also provides a preparation method of the organic photo-thermal molecule and application of the organic photo-thermal molecule in preparation of multifunctional protein nanoparticles with near-infrared aggregation-induced emission. The near-infrared emission aggregation-induced emission organic photo-thermal molecule provided by the invention shows excellent near-infrared imaging effect and photo-thermal capability under laser irradiation, and the obtained near-infrared aggregation-induced emission multifunctional protein nano particle has excellent photo-thermal effect and imaging resolution, has excellent targeting to brain tumor, and has good application prospects in blood brain barrier crossing, brain tumor targeting and brain tumor targeting. And tumor killing, photothermal and ferroptosis combined treatment has practical medical significance, and is expected to be widely applied to the aspects of intelligent drug delivery and nano medical treatment.

The invention discloses a green preparation process of a microwave-assisted synthesized perovskite semiconductor material, which aims at solving the problems of long reaction period, large reagent dosage, heavy pollution and the like of the traditional perovskite preparation process, adopts a novel organic-inorganic hybrid precursor and green solvent system, and accelerates the reaction by microwave radiation. The rapid and environment-friendly synthesis of the material is realized by accurately regulating and controlling microwave parameters and combining multiple processes such as intermittent and collaborative ultrasonic processes. Novel compounds such as nitrogen-containing heterocyclic borate and organic phosphonate are introduced to optimize the performance of the material. The process significantly shortens the preparation period, reduces reagent consumption, improves photoelectric properties, and enhances material stability.

The invention relates to the technical field of fluorescence sensing development, in particular to a Cd (II)-based metal organic framework crystalline material as well as a preparation method and application thereof. The chemical formula of the Cd (II)-based metal organic framework crystalline material is {[Cd3 (H2O) 2 (DMA) 2 (5-CMOIA) 2]. 6 / 5H2O} n, the organic framework material is characterized by an X-ray single crystal diffractometer, and the result shows that the organic framework material is crystallized in a triclinic system P-1 space group, the asymmetric unit of the organic framework material is composed of three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions and three The complex is composed of two deprotonated (5-CMOIA) 3-ligands, two coordinated DMA solvent molecules, two coordinated water molecules and six fifths of crystal water molecules. The solid fluorescence spectrum of the Cd (II)-based metal organic framework crystalline material is measured, the fluorescence response of the Cd (II)-based metal organic framework crystalline material to metal ions in a solution is explored, and the result shows that the Cd (II)-based metal organic framework crystalline material can effectively recognize Hg < 2 + > from different ions and can be applied to the field of fluorescence sensing.

The invention discloses a reversible background-free hydrogel nanosensor for acetone detection and an intelligent sensing platform, and relates to the technical field of biosensors. The hydrogel nanosensor consists of a hydrogel matrix and an upconversion nanoprobe, and the upconversion nanoprobe comprises upconversion nanoparticles (UCNPs), hydroxylamine sulfate and thymol blue (TB). The invention adopts hydroxylamine sulfate as a specific recognition unit of acetone to construct a reversible luminescent hydrogel probe for acetone detection, and the probe can be reused in multiple detections, thereby reducing the cost of a single detection. In addition, by adopting near-infrared light as an excitation light source, the autofluorescence interference of the hydrogel matrix is ​​effectively avoided, thereby improving the detection accuracy.

An organic electroluminescence device is provided and including a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region, wherein the emission layer may include an organometallic compound, thereby exhibiting high luminous efficiency and long service life characteristics.

The invention discloses an organic electroluminescent device, the organic electroluminescent device comprises an anode, a cathode and an organic layer arranged between the anode and the cathode, the organic layer comprises a first metal complex with a structural ligand shown in a formula 1 and a first compound with a structural ligand shown in a formula 2, and the organic electroluminescent device has more excellent comprehensive performance; and particularly, the service life can be remarkably prolonged. Also disclosed are a composition comprising a first metal complex having a structural ligand of Formula 1 and a first compound having a structure of Formula 2, and an organic layer comprising the composition. A display assembly and an electronic device comprising the electroluminescent device or the organic layer are also disclosed.

The invention discloses a blue light-emitting main body composition, and an organic electroluminescent device, a display panel and a display device comprising the same. The blue light-emitting main body composition comprises a first component and a second component, the structural general formula of the first component is shown as a formula I, and the structural general formula of the second component is shown as a formula II; ar1 is selected from deuterated or unsubstituted phenyl or naphthyl; l is selected from deuterated or non-deuterated phenyl; and Ar22 is a deuterated structure of Ar21. In the invention, the compound in the formula I containing the deuterated anthracene nucleus and the non-deuterated Ar21 group is combined with the compound in the formula II containing the non-deuterated anthracene nucleus and the deuterated Ar22 group in a differentiated manner, so that the carrier balance of the organic electroluminescent device can be further adjusted, the efficiency of the organic electroluminescent device is improved, and the service life of the organic electroluminescent device is prolonged. # imgabs0 #

The invention provides a method for improving the stability of a perovskite nanocrystal, which comprises the following steps: S1, preparing the perovskite nanocrystal: mixing a perovskite nanocrystal precursor and a micro / mesoporous template to obtain a mixture; calcining the mixture under the condition that the collapse temperature of the micro / mesoporous template is lower than that of the micro / mesoporous template, so as to generate perovskite nanocrystals in the pore channels of the micro / mesoporous template; s2, post-treatment by a hydrothermal method; and S2, dispersing the perovskite nanocrystals obtained in the step S1 in a high-pressure reaction device filled with an inorganic fluoride solution, and treating the mixed solution through a hydrothermal method to obtain the perovskite illuminant. According to the method, the stability of the perovskite nanocrystals can be improved without collapsing the micro / mesoporous template.

The invention discloses a colorimetric and fluorescent dual-mode nano-enzyme sensor. The colorimetric and fluorescent dual-mode nano-enzyme sensor comprises nano-enzyme, hydrogen peroxide and a colorimetric probe, wherein the nano-enzyme is prepared from ZrCl4, 2-aminobiphenyl dicarboxylic acid and Cu (NO3) 2 by a one-pot method; the colorimetric probe is TMB, can oxidize colorless TMB into blue oxTMB, generates an ultraviolet absorption peak at 652 nm, and has a strong fluorescence emission peak at 405 + / -5 nm. The zirconium-based metal organic framework UiO-67-NH2 with high stability is used as a carrier, Zr < 4 + > sites are replaced by part of Cu < 2 + >, the fluorescent nano-enzyme with peroxidase activity is formed, and the problems that free enzyme is difficult to recover, the stability is low and the like are solved.

The invention relates to the technical field of solar cells, in particular to a pyridinium compound doped perovskite solar cell and a preparation method thereof, a perovskite layer of the cell comprises Pb < 2 + > and a pyridinium compound doped in the perovskite layer, and the molar ratio of the pyridinium compound to the Pb < 2 + > is 1: 500-3: 250. By doping the pyridinium compound and Pb < 2 + >, the perovskite solar cell constructs a four-dimensional synergistic interaction mechanism of defect passivation, ultraviolet protection, energy conversion optimization and environmental protection. The M molecule not only solves the key problem that the perovskite material is easy to be damaged by ultraviolet and influenced by surface defects, but also provides a new solution for improving the comprehensive performance of the solar cell by improving the light utilization rate and the environmental tolerance. The preparation method of the M-doped perovskite solar cell provided by the invention is simple in process, easy to operate and beneficial to large-scale production.

The invention relates to the field of molecular photoelectric devices, and provides a single photon source based on an up-conversion photoelectric device and a preparation method thereof, and the preparation method comprises the steps: preparing a dielectric layer; preparing a graphene array electrode on the dielectric layer; constructing a graphene nano gap point electrode pair; placing the graphene nano gap point electrode pair in a two-neck flask, adding 1-(3-dimethylaminopropyl)-3-2-ethylcarbodiimide hydrochloride and an up-conversion luminescent molecule A part into the two-neck flask, adding anhydrous pyridine into the two-neck flask in a nitrogen environment, and stirring to obtain a graphene nano gap point electrode pair; and putting the device connected with an up-conversion luminescent molecule part A at two ends and an up-conversion luminescent molecule part B containing lanthanide metal into a tetrahydrofuran solution for molecular system chelation to obtain the single-molecule up-conversion photoelectric device containing the chiral group. A liquid metal Ga2O3 protective layer is plated on a single-molecule up-conversion photoelectric device, so that a single photon source is obtained, and the stability and the anti-interference capability of the single photon source are enhanced.

The invention relates to the technical field of preparation of organic photoelectric materials, in particular to a boron-nitrogen compound with a polynary fused ring, an OLED (Organic Light Emitting Diode) with the compound and an organic light-emitting device with the compound. According to the boron-nitrogen compound disclosed by the invention, through matching of a fused heterocyclic structure and limited groups such as tertiary butyl and naphthenic base, the thermal stability of the compound can be improved, and the boron-nitrogen compound has an excellent luminescence characteristic; the boron-nitrogen compound provided by the invention is used as a light-emitting layer material, so that the organic light-emitting device can effectively have lower driving voltage and maintain the stability of the voltage, and the light-emitting efficiency is improved.

The invention relates to the technical field of scintillator materials and X-ray detection, in particular to a rare earth organic-inorganic hybrid complex scintillator and a preparation method and application thereof. The general formula of the rare earth organic-inorganic hybrid complex scintillator is [RE (L) 4] <->. [A] < + >, wherein RE is selected from Eu, Tb, Sm or Dy; l is a beta-diketone ligand; [A] < + > is selected from long-chain hydrophobic quaternary ammonium salt cations or heterocyclic quaternary ammonium cations which have the carbon atom number of C8-C20 and do not contain active functional groups. The rare earth organic-inorganic hybrid complex scintillator provided by the invention has good solubility and molecular-level dispersion capability. The scintillator film based on the rare earth organic-inorganic hybrid complex prepared by using the rare earth organic-inorganic hybrid complex has the characteristic of compatibility of high scintillator load and high light transmission, overcomes the problems of low scintillator load rate, poor transparency and limited imaging resolution of the traditional scintillator film, and has excellent practical value and popularization prospect.

The invention discloses a polyimidazolone compound as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving a bilateral alkyne ester compound, amidine hydrochloride, a catalyst and a desalting agent in an organic solvent, and carrying out polymerization reaction to obtain the polyimidazolone compound. The polyimidazolone compound with the five-membered ring is selectively generated, and the method has the advantages that monomers are easy to obtain, operation is easy, and by-products are low in toxicity. The polyimidazolone compound prepared by the invention has better machinability and has potential application value in the aspects of metal ion detection and biogenic amine detection.

Described herein are methods, compositions and articles of manufacture involving neutral conjugated polymers including methods for synthesis of neutral conjugated water-soluble polymers with linkers along the polymer main chain structure and terminal end capping units. Such polymers may serve in the fabrication of novel optoelectronic devices and in the development of highly efficient biosensors. The invention further relates to the application of these polymers in assay methods.

The present invention relates to an organic molecule, in particular for application in optoelectronic devices. According to the invention, the organic molecule has a structure according to formula I, in which p, q are integers selected from 0 and 1, where p+q=1, r is, in each occurrence, an integer selected from 0, 1, 2 or 3, s is, in each occurrence, an integer selected from 0, 1, 2, 3 or 4, and Z is, in each occurrence, independently, a direct bond, CR 3 R 4 , C=CR 3 R 4 , C=O, C=NR 3 , N.R. 3 , O, SiR 3 R 4 , S, S(O) and S(O) 2 is selected from the group consisting of: [Chemical formula I] JPEG2025506369000072.jpg58170

The invention discloses a method for detecting glufosinate-ammonium residues in coffee in dual modes of colorimetry and chemiluminescence, and belongs to the technical field of chemical analysis and detection.The method comprises the steps that Schiff base formed by 4-aminoantipyrine and glutaraldehyde serves as a complexing agent of Cu < 2 + >, and then a copper-doped carbon dot Cu-CDs nano-enzyme is prepared through microwave digestion; according to the present invention, the Cu-CDs nano-enzyme has excellent peroxidase-like activity, can oxidize the colorless 2, 2 '-biazo-bis-3-ethylbenzothiazoline-6-sulfonic acid into the blue-green oxidized ABTS, and can improve the chemiluminescence intensity of the reaction of N-(4-aminobutyl)-N-ethylisoluminol and H2O2 by nearly 100 times when the Cu-CDs nano-enzyme is used as the chemiluminescence catalyst; based on the inhibition effect of glufosinate-ammonium on the activity of Cu-CDs POD, a sensitive and rapid colorimetric and chemiluminescence two-channel GM detection technology is developed, and the method has potential application value in the aspect of coffee safety monitoring.

The invention discloses a synthesis method of amphiphilic quantum dots and application of the amphiphilic quantum dots in nano oil displacement, and belongs to the field of nano oil displacement. The synthesis method comprises the following steps: heating a mixture containing a carbon source and a nitrogen source in an air atmosphere for reaction, and centrifuging, filtering and drying a reaction product to obtain the amphiphilic quantum dots, the carbon source is selected from at least one of glucose, mannose, citric acid, lignin, chitosan and starch; the nitrogen source is selected from at least one of alkylamine, and the carbon chain length of the alkylamine is C6 to C12. The synthesis method is simple, heating of a high-pressure reaction kettle is not needed, the technological process is simple, and the method is suitable for large-scale industrial production; the series of amphiphilic carbon quantum dots show better solubility and higher absolute fluorescence quantum yield in water and various organic solvents.

The invention discloses an organic electroluminescent compound and a luminescent device. The organic electroluminescent compound has a structure as shown in a formula (1). In the structure of the N-type compound provided by the invention, an electron-rich group formed by carbazole and phenyl connected with the carbazole is substituted by deuterium, and the deuterated P-type compound in the core region is matched, so that the chemical stability, photoelectric stability and thermal stability of the structure of the luminescent material can be effectively improved, the stability of a luminescent device using the material is further improved, and the service life of the luminescent device is prolonged; meanwhile, the N-type compound and the deuterated P-type compound in the core area can form a good Premix material, good P / N stability and mass production stability are achieved in the evaporation process, the formed Premix material has more balanced carrier mobility, the efficiency of a device is greatly improved, and the service life of the device is greatly prolonged. And # imgabs0 #.

The invention belongs to the technical field of novel fluorescent materials, and particularly discloses application of a mechanical color change pyrenyl derivative in latent fingerprint fluorescence imaging and extraction. The mechanical color-changing pyrenyl derivative can be selectively combined with fingerprint residual substances under the excitation of ultraviolet light through the unique fluorescence response characteristic, so that potential fingerprints form high-contrast fluorescence imaging on smooth or rough surfaces (such as glass, metal, plastic and the like), and the mechanical color-changing pyrenyl derivative is compatible with conventional camera equipment to realize rapid acquisition. The compound design is based on a modular synthesis route, and has the advantages of simple and convenient synthesis process, controllable raw material cost, high reaction yield and the like. The product has excellent thermal stability and chemical stability, can be stored at normal temperature and does not need special treatment, and the practical application threshold is greatly reduced. Compared with a traditional fingerprint developing technology, the method has remarkable breakthroughs in the aspects of sensitivity, substrate adaptability and operation convenience, and an efficient, economical and environment-friendly novel solution is provided for the fields of criminal investigation, forensic identification and the like.

The invention discloses an AIE type fluorescent probe with tumor targeting as well as preparation and application thereof, and belongs to the technical field of medicines, the probe can accurately target HDAC6 high-expression tumor cells, the specific binding capacity of the probe reduces interference to normal cells, and the detection accuracy is improved. The probe is fused with AIE performance dye molecules and emits strong fluorescence during aggregation, so that the imaging sensitivity and definition are remarkably enhanced. By optimizing the structure and synthesis conditions, the fluorescence intensity and stability of the probe are improved, the sensitivity of early tumor detection is ensured, and the survival rate and life quality of patients are improved. The preparation method is simple, convenient, feasible, low in cost and beneficial to practical application. The probe can be used for preparing tumor detection products, assisting in tumor diagnosis and classification, monitoring treatment changes and evaluating the curative effect. High-precision imaging can be realized in the aspect of tumor imaging, the method can be used for evaluating curative effect and guiding formulation of subsequent treatment schemes, and the application prospect is wide.

The invention belongs to the technical field of OLEDs, and provides a polycyclic compound containing triphenyl silicon and a polyalkyl substituent group and an organic electroluminescent device containing the polycyclic compound. The structural general formula of the polycyclic compound is as shown in formula I in the specification. Benzofuran with higher electronegativity is introduced to a ring structure composed of nitrogen atoms and boron atoms, triphenyl silicon is introduced to the para-position of boron, and the synergistic effect of benzofuran and triphenyl silicon can significantly enhance the multiple resonance of a light-emitting core and reduce vibration relaxation. Due to simultaneous use of the benzofuran and the triphenyl silicon, the problems of vibration relaxation increase, spectrum widening and the like caused by introduction of the polyalkyl substituent are remarkably improved, the luminous efficiency of the material is remarkably improved, and the color purity is improved, so that the requirement of BT.2020 wide color gamut display standard on a luminescent spectrum is met. I

Provided is a light emitting device including a first electrode, a second electrode, and an emission layer between the first electrode and the second electrode, and the emission layer may include a condensed cyclic compound represented by Formula 1 below, thereby exhibiting high luminous efficiency and improved service life characteristics.

The invention discloses a method for coating fluorescent powder with aluminum oxide through plasma-assisted atomic layer deposition, which comprises the following steps of: building an atomic layer deposition system, and placing a base station in a vacuum chamber of the atomic layer deposition system; fluorescent powder is placed on a base station, a vibration motor is turned on, and then the fluorescent powder is pretreated, including degassing treatment and oxygen plasma pretreatment; sequentially and alternately introducing two precursors into a vacuum chamber of the atomic layer deposition system, so that the two precursors are chemically adsorbed on the surface of the fluorescent powder and react to generate an aluminum oxide film; and after each precursor is introduced and reacts, the vacuum chamber needs to be cleaned by inert gas. According to the method, high-precision monoatomic-layer-level film control is achieved through the plasma-assisted atomic layer deposition technology, the defect that powder is prone to agglomeration in deposition is overcome through the vibration type fluidized bed technology, and therefore a high-quality aluminum oxide protection layer can be formed on the surface of the fluorescent powder; the water resistance and the luminescence property of the fluorescent powder are obviously improved.

The invention provides a zeolite imidazate framework fluorescent material and a preparation method and application thereof, and belongs to the technical field of detection material preparation and environment. Quantum dots, a molecular imprinting technology and an MOFs material are combined, firstly, Mg and N co-doped graphene quantum dots and ZIF-8 are compounded, then imprinting is carried out on the surface of ZIF-8, and the zeolite imidazate framework fluorescent material based on MOFs is obtained. In the zeolite imidazate framework fluorescent material, Mg and N co-doped graphene quantum dots not only have good fluorescence performance, but also can generate electron transfer with SDZ to form hydrogen-bond-like acting force, imprinted holes similar to a target object in size and shape are reserved in the surface of the imprinted material, and the target object needing to be detected can be selectively recognized; the zeolite imidazate framework fluorescent material can be used for detecting sulfadiazine in the environment and has good practicability.

A semiconductor nanoparticle, a production method, and an electroluminescent device including the same. The semiconductor nanoparticle includes zinc, sulfur, and selenium, and the semiconductor nanoparticle comprises a first semiconductor nanocrystal; and a semiconductor nanocrystal shell including zinc and sulfur disposed on the first semiconductor nanocrystal, and the semiconductor nanoparticle does not include cadmium; the semiconductor nanoparticle further includes a plurality of organic ligands (or a ligand system), that include a first organic ligand having a carboxylate moiety and a second organic ligand having a carboxylate moiety different from the first organic ligand. In a gas chromatography analysis, the semiconductor nanoparticle exhibits a first peak assigned to the first organic ligand and a second peak assigned to the second organic ligand, wherein an area percentage of the first peak relative to the second peak is greater than or equal to about 1% and less than or equal to about 300%.

The invention discloses a metal-doped carbon quantum dot as well as preparation and application of the metal-doped carbon quantum dot in a nano antibacterial agent, citric acid, urea and tea polyphenol are taken as precursors, metal salt is added, carbon dot synthesis and metal ion doping are synchronously completed in one step through a hydrothermal method, and the metal-doped carbon quantum dot is prepared; the surfaces of the metal-doped carbon quantum dots are negatively charged, and the metal-doped carbon quantum dots have peroxidase-like activity and catalase-like activity at the same time; the metal ions adopt any one of Fe < 3 + >, Cu < 2 + > and Ce < 3 + >; the metal-doped carbon quantum dots are in a sphere-like shape. The metal-doped carbon quantum dots prepared by the preparation method disclosed by the invention have peroxidase-like activity and catalase-like activity at the same time through precise doping of metal ions, and the two activities have a synergistic effect in an oral periodontitis microenvironment, so that a good antibacterial effect is achieved.

The invention discloses a preparation method of a silicon-based quantum dot tracer. The silicon-based quantum dot tracer agent disclosed by the invention is prepared by taking 3-aminopropyltrimethoxysilane, sodium citrate, urea and deionized water as raw materials and adopting a hydrothermal synthesis method. The silicon-based quantum dot tracer agent is synthesized by using 3-aminopropyltrimethoxysilane as a silicon source and using the synergistic effect of double reducing agents of sodium citrate and urea, the synthesized silicon-based quantum dot tracer agent can overcome the influence of temperature and environment on the silicon-based quantum dot tracer agent, the fluorescence lifetime is prolonged, and the silicon-based quantum dot tracer agent has a relatively small particle size and can be used for preparing the quantum dot tracer agent. And inter-well tracer testing and single-well chemical testing technology research of an on-site oil field are facilitated.