65results about "Azo dyes" patented technology

The application provides a triarylmethane derivative, a pigment dispersion liquid, a preparation method thereof and a photoresist, and relates to the field of photoresists. The structural general formula of the triarylmethane derivative is: wherein X1 is selected from one of long-chain alkyl groups with a length of C1-C12, X2 is selected from hydrogen or an alkyl group, X3 is selected from one of H, an alkyl group and an aromatic group, and Q is selected from one of a carboxyl group, a sulfonic acid group and a phosphoric acid group. The triarylmethane derivative can generate strong van der Waals force and pi-pi conjugation effect with pigment molecules in a colorant by virtue of the large-plane conjugated triarylmethane skeleton, so as to be firmly anchored on the surface of the pigment particles; the strong polar functional groups such as the sulfonic acid group in the molecular structure of the triarylmethane derivative are combined with the alkaline dispersant, the side long-chain alkyl groups fully act on the dispersion medium, and the re-aggregation of the nano pigment particles is effectively prevented through strong steric hindrance and electrostatic stabilization mechanism, so that the problem of poor dispersion stability is solved.

A reversibly thermochromic microcapsule pigment according to the present invention has a reversible thermochromic composition encapsulated in microcapsules, the reversibly thermochromic composition consisting of a compound such as(A) an electron-donating color-developing organic compound,(B) a 4-hydroxybenzoic acid ester compound represented by General Formula (1) below as an electron-accepting compound,(C) a compound such as a chain hydrocarbon as a reaction medium that reversibly induces an electron transfer reaction by the (A) and (B),(D) a linear dibasic acid compound having 3 to 22 carbon atoms, and(E) an aromatic hydrocarbon having a melting point of 50° C. or higher,wherein R represents a linear or branched chain alkyl group having 12 to 22 carbon atoms.

This invention relates to a lysosome-targeting fluorescent dye based on the BODIPY structure and its synthesis method, belonging to the field of organic fluorescent dyes. The invention designs and synthesizes the lysosome-targeting fluorescent dye BDP. The dye molecule uses BODIPY as the parent structure, and a novel lysosome-targeting fluorescent dye molecule is synthesized by introducing diphenylphosphine salt and tert-butyloxycarbonyl groups. The synthetic route of this dye is simple, it possesses excellent photostability, and exhibits good resistance to interference from ions, amino acids, and viscosity. Furthermore, this dye demonstrates superior fluorescence performance in a variety of common solvents, with fluorescence quantum yields exceeding 0.70. Experimental results show that this fluorescent dye can precisely target lysosomes in living cells, demonstrating promising applications in the field of bioimaging.

The present application belongs to the field of laser devices and technology, and particularly relates to a composition and method for improving energy conversion efficiency of rhodamine B in pure water, which comprises rhodamine B, sulfobutyl-beta-cyclodextrin, and the molar ratio of rhodamine B to sulfobutyl-beta-cyclodextrin is 1:0.9-1.1. According to the molecular structure of sulfobutyl-beta-cyclodextrin, a hydrophobic cavity and a ring-mounted main body with good water solubility are constructed, and the inclusion complexation and molecular recognition mechanism are utilized to accommodate rhodamine B dye molecules, effectively solving the aggregation effect of fluorescent dye molecules in pure water medium, and overcoming the problem of introduction of organic solvents (hazardous chemicals) in the prior art. The method can realize high-efficiency energy conversion output of rhodamine B dye in pure water medium.

A method for producing fluorenone including a pretreatment step of heating fluorene in the presence of a lower aliphatic carboxylic acid, a bromine compound, and a metal catalyst, and an oxidation step of continuously supplying fluorene and oxygen to perform an oxidation reaction, in the order indicated.

The application provides a pyridinone compound and a preparation method and application thereof, and belongs to the technical field of compound synthesis.The pyridinone compound is (E)-5-[(hydroxyl methylene)amino]-1,2,3,6-tetrahydropyridine-2,3,6-trione, and the molecular formula is C6H4N2O4.The pyridinone compound of the application simultaneously contains a hydroxyl group, an imino group and multiple carbonyl functional groups in the structure, forms a unique conjugated system and hydrogen bond network, and has the potential to be used as a bioactive precursor or a functional material.The pyridinone compound with a purity greater than 95% and a yield greater than 94% can be obtained by using the preparation method of the application, the compound shows good performance in dyeing applications, not only expands the application range of the pyridinone compound, but also provides a new way for realizing high-value utilization of fermentation broth resources, and has the advantages of environmental protection and economic benefits.

Described herein are 1,2-dioxetane dimers that are useful as chemiluminescent probes, diagnostic agents, and imaging agents. Also described herein are compositions containing such compounds and methods of using the same.

To provide an optical filter in which high transmittance of visible light, particularly transmittance of blue light, is favorably maintained, and also in which decrease in near-infrared light shielding performance at high incident angles, such as light leakage, is suppressed.SOLUTION: The present invention relates to an optical filter including a base material and a dielectric multilayer film laminated on at least one main surface of the base material. The base material includes a pigment (A) as a near-infrared absorption pigment and a resin film including resin. The pigment (A) includes at least one of the compound shown by the following formula (A1) and the compound shown by the following formula (A2). The optical filter satisfies a specific spectral characteristic.SELECTED DRAWING: Figure 1

This pyrazole-based squarylium compound is represented by formula (1).　In formula (1), RC represents a primary alkyl group having 2-5 carbon atoms, a secondary alkyl group having 3 or more carbon atoms, or a tertiary alkyl group having 5 or more carbon atoms, and RN represents a primary alkyl group having 2 or more carbon atoms, a secondary alkyl group having 3 or more carbon atoms, or a tertiary alkyl group having 4 or more carbon atoms. When RN represents a tertiary alkyl group having 4 carbon atoms, RC represents at least one selected from a cyclopropyl group, a cyclohexyl group, and a 3-pentyl group.

This invention discloses a method for preparing Disperse Yellow 54. The invention relates to the field of disperse dye preparation technology. Under normal pressure, o-toluene isocyanate is heated to 120-140°C and irradiated with ultraviolet light. Chlorine gas is introduced at a rate of 20 g / h to carry out a bubbling chlorination reaction, yielding a chloride mixture containing o-(monochloromethyl)phenyl isocyanate, o-(dichloromethyl)phenyl isocyanate, and o-(trichloromethyl)phenyl isocyanate. The mixture is then subjected to vacuum distillation at a vacuum degree of -0.098 MPa and 150-170°C. The pre-fraction containing the monochloro derivative is first distilled off, and the dichloro derivative fraction is collected to obtain o-(dichloromethyl)phenyl isocyanate. This intermediate is hydrolyzed / converted in an alkaline aqueous solution to obtain o-aminobenzaldehyde, which is then condensed with monochloroacetone to generate 2-methyl-3-hydroxyquinoline. Disperse Yellow 54# is synthesized from 2-methyl-3-hydroxyquinoline and phthalic anhydride under the action of a catalyst. This method has a clear process route, well-defined key control points, and high purity intermediates.

The present application relates to the technical field of liquid crystal material, and more particularly to a dichroic dye compound and application thereof.The dichroic dye compound provided by the present application has a large order parameter, thereby having better contrast ratio, and has better contrast ratio when applied to a liquid crystal display device.

Provided is a light-absorbing filter comprising a light-absorbing layer, the light-absorbing layer containing: a resin; a boron-dipyrromethene dye represented by general formula (1); and an anthraquinone dye represented by general formula (2). The boron-dipyrromethene dye represented by the general formula (1) and the anthraquinone dye represented by the general formula (2) are not connected to each other. Also provided is a display device comprising the light-absorbing filter.　In the formula (1), X1 and X2 each represent a fluorine atom or an alkoxy group.　R1 to R7 each represent a hydrogen atom or a substituent and may contain a quencher part. R1 and R5 may be connected to each other to form a hydrocarbon ring or a heterocyclic ring, and R4 and R6 may be connected to each other to form a hydrocarbon ring or a heterocyclic ring.　In the formula (2), A represents -OH or -NH-R62.　R61 and R62 each represent a hydrogen atom or a substituent.

The present invention relates to an organic electroluminescent device comprising a substrate, an anode layer and a cathode layer, at least one light emitting layer, and at least one semiconductor layer or more, wherein the at least one semiconductor layer comprises at least one metalorganic compound, comprising a metal M and at least one ligand L, wherein the ligand L is preferably 4-(2,4-dioxopentan-3- yl)-2,6-bis(trifluoromethyl)benzonitrile (I) and the metalorganic compound is preferably bis(trifluoromethyl) phenyl)-4-oxopent-2-en-2-yl)oxy)copper(ll) (G1) or the corresponding aluminium(lll) and iron(lll) complexes. Technical data of organic electroluminescent devices comprising comprising said metalorganic compounds is provided in table 3.

The present application provides a compound for thermochromic dye and its preparation method and application. The compound has the structure of formula I. The present application also provides a composition comprising the compound of formula I, a heat-sensitive recording material, a color-developing article and a preparation method of the compound of formula I. The compound of the present application has a self-thermochromic effect, thus no additional color-developing agent is needed, the use of bisphenol A or bisphenol S color-developing agent can be avoided, and the safety is higher.

Provided are a color conversion pixel including quantum dots and a color material, a composition for the color conversion pixel, and a display device including the color conversion pixel.

Green excitable tandem dyes are provided. Tandem dyes of embodiments of the invention include: a non-conjugated polymeric backbone; one or more green excitable donor fluorophores linked to the non-conjugated polymeric backbone; and one or more acceptor fluorophores linked to the non-conjugated polymeric backbone; where the donor and acceptor fluorophores are in energy transfer relationship. Also provided are methods of making and using the tandem dyes, as well as kits that include the dyes and find use in embodiments of the methods.

Embodiments of this application relate to the field of liquid crystal technologies, and disclose a compound, a liquid crystal composition and uses thereof, to solve the technical problem of a short service life of an electronic device caused by poor material performance and a high material performance degradation speed of liquid crystal materials. The compound has a structure as set forth in formula (I). X1 and X2 are each independently selected from hydrogen, deuterium, tritium, at least one halogen and at least one hydrocarbyl group, and at least one of X1 and X2 is not hydrogen. The compound has a relatively high birefringence, relatively good dielectric anisotropy, a relatively low rotational viscosity, a relatively high clearing point, relatively good low-temperature stability and the like, and when the compound is applied as a liquid crystal compound, the performance of the liquid crystal material degrades at a low speed, so that the service life of the electronic device can be prolonged.

This invention discloses BODIPY dyes, their preparation methods, and their applications in latent fingerprint recognition. The invention prepares four BODIPY dyes with different structures and emission colors, all exhibiting high fluorescence quantum yields (over 55% absolute fluorescence quantum yield) and excellent lipophilicity. Using a spray method, latent fingerprints on different substrates can be efficiently and conveniently detected within 10 seconds. Furthermore, the detection solution demonstrates excellent stability, can be stored for up to 30 days, and achieves a color change from green to red through modulation. This modulation effectively addresses complex background colors, ensuring optimal latent fingerprint detection results under various color backgrounds.

This invention provides a dye capable of evaluating the degree of surface coverage of metal oxide particles coated with a silicon oxide film, a method for evaluating the degree of surface coverage of a silicon oxide film using the dye, and a method for comparing and evaluating the degree of surface coverage of metal oxide particles coated with a silicon oxide film. [Solution] A dye represented by the following general formula (1), used to evaluate the degree of surface coverage of metal oxide particles coated with a silicon oxide film. [C1] TIFF2026106039000039.tif32170

The purpose of the present invention is to provide an organic EL display device with minimal brightness unevenness.　This organic EL display device is provided with a substrate, a first electrode, a pixel division layer, light-emitting pixel and a second electrode, wherein the pixel division layer contains (a) an organic black pigment and / or a mixed-color organic black pigment, and (b) silica particles with a primary particle diameter of 5-30 nm and an aspect ratio (long axis / short axis) of 1.0-1.5.

The application discloses a preparation method of 3-amino-4-methoxy-N-phenyl benzamide. The method comprises the following steps: taking p-hydroxybenzoic acid as raw material, carrying out amidation reaction, diazotization and reduction reaction to obtain 3-amino-4-hydroxy-N-phenyl benzamide intermediate, and finally carrying out methylation reaction to obtain 3-amino-4-methoxy-N-phenyl benzamide. The solid product of 3-amino-4-methoxy-N-phenyl benzamide obtained by the preparation method has a purity greater than 97%, the overall step operation is simple under the premise of obtaining high yield, three waste emissions are reduced, and the method is more suitable for industrial production.

The present invention relates to a holographic recording medium, a method for producing the same, and an optical element including the same. The holographic recording medium has a specific element composition ratio, and thus has excellent optical recording properties, excellent durability against heat and moisture, suitable adhesive strength to a transparent adhesive, and high transparency.

A compound is represented by a formula (1) below, in which k is an integer of 0 or more, m is an integer of 1 or more, n is an integer of 2 or more. L is a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 30 ring carbon atoms, CN is a cyano group, and D1 and D2 are each independently represented by one of a formula (2), a formula (3) and formula (3x) below, D1 and D2 being optionally mutually the same or different.