74results about "Anthracene dyes" patented technology

This disclosure provides compositions of electrochromic dyes, functionalized electrochromic dyes and dye macromers which may be incorporated into electrochromic devices with tailored optical properties. The disclosure provides an electrochromic dye with an attached functionalization group wherein the said dye colors by at least one of oxidation and reduction and contains at least two moieties wherein a first moiety is electrochromic and a second moiety is an electrochromic moiety, an electron donating moiety, or an electron receiving moiety and wherein the functionalization group. This disclosure also provides EC compositions and devices for controlling color.

The invention discloses an ether chain modified rhodamine fluorescent dye, an ether chain modified rhodamine fluorescent dye probe and a preparation method and application thereof, through modification of an ether chain, the water solubility of the rhodamine dye is improved, the aggregation quenching effect is reduced, meanwhile, the intramolecular torsional charge transfer (TICT) is reduced through the electron withdrawing effect of oxygen atoms, and the fluorescence sensitivity is improved. Finally, the quantum yield of the rhodamine dye is greatly improved. The quantum yield of ether chain modified oxygen rhodamine water is increased from 0.31 to 0.70, and the quantum yield of silicon-based rhodamine water is increased from 0.19 to 0.41. The rhodamine dye disclosed by the invention has the characteristics of high brightness, easiness in functional derivation and the like, and has application prospects in the fields of fluorescent probes, fluorescent labels, super-resolution fluorescence imaging and the like.

The invention relates to the technical field of polymer dye synthesis, and discloses a monomer for a blue polyester fiber and a preparation method thereof.According to the monomer for the blue polyester fiber, 1, 4-arylamino substituted anthraquinone serves as a color development mother nucleus, a benzoate group is introduced to aryl of the 1, 4-arylamino substituted anthraquinone mother nucleus, and the monomer for the blue polyester fiber is obtained; the benzoate group is connected with the chromophoric parent nucleus through a carbon-carbon bond; the molecular terminal of the monomer for the blue polyester fiber is connected with an exposed ester group through an aryl group, and the exposed ester group is used for transesterification with dihydric alcohol under the melt polycondensation condition of polyester. The novel monomer for the blue polyester fiber, provided by the invention, has excellent color development performance and thermal stability, can be directly used for in-situ synthesis of blue polyester and can be directly used for melt spinning, and the color fastness and coloring uniformity of a product are improved; meanwhile, the monomer for the blue polyester fiber, provided by the invention, is simple in preparation method, low in cost and easy for large-scale production.

The present invention includes methods for forming an object in a volume including a photohardenable composition described herein that includes a photohardenable resin component and a photoswitchable photoinitiator comprising a P-type photochromic molecule. The present invention also includes photoswitchable photoinitiators comprising a P-type photochromic molecule, preferably comprising a P-type diarylethene molecule, and photohardenable compositions and methods including such photoswitchable photoinitiators.

To provide a colored resin composition that can form a color filter having excellent heat resistance and light resistance.SOLUTION: This invention relates to a colored resin composition that contains a colorant and an alkali-soluble resin, the colorant containing a terylene compound having 8 or more rings fused together.SELECTED DRAWING: None

The present invention relates to dyes with pH-dependent absorption and fluorescence for pH detection and their applications in biology, medicine and theranostic. In particular, the present invention relates to compounds of the general formulae (I) - (IV), that show pH dependent absorption and fluorescence spectra as well as pH dependent fluorescence quantum yield, methods for their preparation and their application as pH-sensors and labeling groups for the detection of analytes.

The present invention relates to perylene compounds having the following general formula, a preparation method and uses thereof, wherein each symbol and index are as defined in the specification. The compound can be used as a pigment in the fields of coatings and plastics, and has the characteristics of excellent near-infrared transparency, excellent solvent resistance, excellent acid and alkali resistance and excellent heat resistance.

The present invention provides a pigment composition that can improve absorbance across the entire visible light spectrum without increasing absorbance in the ultraviolet region. Furthermore, it provides a colored composition and molded article that achieve high light-shielding properties without interfering with active energy ray curing. [Solution] The pigment composition of the present invention comprises one or more compounds (A) represented by the following general formula (i), and a pigment (B). The pigment composition comprises one or more pigments selected from the group consisting of carbon black, benzodifuranone pigments, and perylene pigments. [C1] TIFF2026095407000040.tif17170

Disclosed are: a fluorescent compound represented by general formula (I), (I)′, or (I)″, as a fluorescent compound which has high retention in a lipid bilayer, has excellent ease of handling, and can achieve uniform dyeing in a dyeing target; and a lipid bilayer dyeing method and an endocytosis detection method using said compound.Ch is a hydrophobic-field-sensitive fluorescent chromophore in which the fluorescence intensity increases in hydrophobic environments; A-H is an anionic functional group capable of generating anions by deprotonation; Xn+ is a positive ion having biological compatibility; n is 1, 2, or 3; L is a linker that binds to a hydrophobic-field-sensitive fluorescent chromophore and links the fluorescent chromophore and the anionic functional group; and LH+ indicates a state wherein the linker, which contains a cationic functional group capable of generating cations by protonation, has generated a cation by protonation.

The present disclosure relates to O-methyltransferase enzymes. The present disclosure also relates to polypeptides having O-methyltransferase activity, recombinant vectors, host cells, and enzyme preparations thereof. The present disclosure also relates to a process for producing O-methylanthraquinones using O-methyltransferase enzymes as well as their use as pigments and dyes.

To provide a colored composition for color filters that exhibits high contrast ratio due to low aggregation of pigments, fewer film defects in the coating even when stored for a long period under temperature fluctuations, and good pattern characteristic dependence with respect to the time from application to exposure when used as a colored curable composition. To provide a colored curable composition for color filters, a color filter, a solid-state image sensor, and an image display device using the colored composition for color filters. [Solution] A coloring composition for color filters comprising a pigment (A), a dye derivative (B), a resin-type dispersant (C), and an organic solvent (D), wherein the dye derivative (B) comprises a compound having a heterocycle (B1), a compound having a heterocycle (B2), and a compound having a heterocycle (B3), and the mass ratio of compounds (B1) to (B3) satisfies a specific range.

The application discloses a kind of red dyed spandex fiber containing double-hydroxyl red dye and its preparation method, belongs to dye and fiber preparation technical field.The structure formula of double-hydroxyl red dye is.By dissolving double-hydroxyl red dye in solvent C, polyol, isocyanate is added, catalyst or reaction retarder is added or not added to carry out reaction;After reaction, cooling, chain extender is added or not added to the system, end-capping agent is added or not added to stir, stand to defoam, and red polyurethane spandex spinning solution is obtained;Red polyurethane spandex spinning solution is dry spinning again, and red spandex fiber can be obtained.The double-hydroxyl red dye is connected into spandex main chain in the form of covalent bond, the problems such as difficult dyeing of spandex fiber in later period, much wastewater and so on are solved, and the fiber has excellent rubbing fastness and migration resistance.

The present invention relates to compounds of formula (I) wherein R1 is a dye and L1, R2 and R3 are as defined herein. The compounds of the invention reversibly convert from a hydrophobic form to a hydrophilic form upon contact with water and carbon dioxide. The invention also relates to a method for dyeing fibers and a method for decolorizing dyed fibers. The method is particularly suitable for dyeing polyester fibers. (I)

A blue pigment for cosmetic applications is provided, which exhibits excellent color and stability characteristics, while being fully plant-based, edible and of natural origin.

A fluorescent dye, as well as a preparation method and uses thereof, wherein the fluorescent dye is sensitive and specific to viscosity and has low background fluorescence; it can also be used as a fluorescent activated and lighted probe used for fluorescent labeling, quantification or monitoring of protein, enzymes or nucleic acid.

The application discloses a blue organic modified dye, a preparation method and application thereof, and belongs to the technical field of dyes and fiber preparation. The structural formula of the blue organic modified dye is. Solvent blue 908 is added into dry tetrahydrofuran, an organic alkali tetrahydrofuran solution and an alkylene oxide tetrahydrofuran solution are added, stirring reaction is carried out, standing is carried out, water is added for filtration, recrystallization is carried out, and the blue organic modified dye is obtained.(a) The blue organic modified dye is dissolved in a solvent A, polyols and isocyanic acid ester are added, a catalyst is added or not, a reaction retarder is added or not, a chain extender is added or not, a blocking agent is added or not, degassing is carried out, filtration is carried out, and a spinning solution is obtained; and(b) the spinning solution is dry spun to form a blue spandex fiber. The dye can solve the problems of difficult late dyeing of the spandex fiber, much wastewater and the like, the dye is combined with the spandex fiber through a chemical bond, and the dye has excellent dry and wet rubbing fastness and excellent migration resistance.

The present invention relates to a colored nylon preparation technology, and disclosed are colored nylon and a preparation method therefor and an application thereof. The colored nylon comprises nylon structure units and chromogenic structure units. The chromogenic structure units comprise dye chromogenic groups. The chromaticity of a supernatant obtained by steaming a mixture of the colored nylon and an organic solvent in a weight ratio of 1:3 does not exceed 10, and the difference in color depth of the colored nylon does not exceed 0.2. The preparation method for the colored nylon comprises: enabling a condensate containing the dye chromogenic groups to be in contact with a nylon monomer for a condensation reaction, so that at least some of the dye chromogenic groups are located between and / or at the ends of the structure units formed from the nylon unit. The colored nylon provided by the present invention has excellent water resistance and organic solvent resistance, high dyeing uniformity and good dyeing stability, low energy consumption and little pollution in the preparation process, and good economic and social benefits.

Food contact materials with a color difference ΔE <20 from the L*a*b* coordinates to a color number starting with "5" of the RAL color chart according to the color model according to EN ISO 11664-4, to be determined according to DIN 5033 (1979), based on compositions containing at least one polyester or polystyrene and a colorant consisting of at least one blue anthraquinone dye and at least one ethylene oxide-propylene oxide block copolymer with a central propylene oxide unit between two ethylene oxide units, a molar mass determined from the OH number to be determined according to DIN / ISO 4629, in the range of 5500 to 7500 g / mol, a mass fraction of ethylene oxide units in the range of 45 to 55 wt.% and a flocculation point to be determined according to EN 1890 method B in the range of 70°C to 85°C.

Provided is an anthraquinone compound of formula (1). (R1 and R4 each represent -H, a C1-12 linear or branched alkyl group, a C1-12 linear or branched alkoxy group, a halogen atom, -CO2R8, -OCOR8, -COR8, -CONR9R10, -NR11R12, -CN, or -CF3. R2, R3, R5, and R6 each represent –H, a C1-4 linear or branched alkyl group, a C1-4 linear or branched alkoxy group, a halogen atom, -CO2R8, -OCOR8, -COR8, -CONR9R10, -NR11R12, -CN, or -CF3. R7 represents a C1-12 linear or branched alkyl group, a C1-12 linear or branched alkoxy group, or a substituent represented by formula (a) (wherein, R13 represents –H or a C1-8 linear alkyl group). R8 represents a C1-8 linear or branched alkyl group or the like, and R9 to R12 each represent a C1-8 linear or branched alkyl group.)

The present invention relates to perylene pigments having an increased near-infrared (NIR) transparency, wherein the perylene black pigment has a primary particle size Dn(90) = 2 to 50 nm and a primary particle size distribution span = 0.01 to 1.0 as determined by Transmission Electron Microscopy (TEM).

A sensor to detect solid particles of a target salt can include a support substrate, an adsorption layer, a sensing layer oriented between the support substrate and the adsorption layer, and an electrode pair in contact with the sensing layer and separated by the sensing layer. The adsorption layer can include an ion exchange medium formed of a first porous structured material functionalized with basic or acidic functional groups. The basic or acidic functional groups can remove an acid or base component from the target salt to form a free base or free acid, respectively, of the target salt. The sensing layer can include a second porous structured material functionalized to detect the free base or acid of the target salt by a change in conductivity.

A pigment formulation comprising a) C.I. Pigment Violet 23 of the formula (I) as base pigment, b) a perylenetetracarboxylic diimide compound that contains at least one sulfo group and is of the general formula (II) as pigment synergist, in which: A is a bivalent >NR1 or >N-R2-SO3 -X+ radical, R1 is a hydrogen atom or a C1-C30-alkyl group, preferably a C1-C18-alkyl group and especially a C1-C4-alkyl group, or an aryl group, preferably phenyl, where the aryl group may be unsubstituted or mono- or polysubstituted by halogen such as chlorine or bromine, sulfo, C1-C4-alkyl such as methyl or ethyl, C1-C4-alkoxy such as methoxy or ethoxy, or phenylazo, R2 is a straight-chain or branched C1-C6-alkylene group, especially ethylene or propylene, X+ is NR3R4R5R6+ with R3, R4, R5, R6 = H, unbranched or branched C1-C30-alkyl, phenyl or phenyl-C1-C6-alkyl.

The present invention includes a method for forming an object within a volume containing a photocurable composition described herein, the photocurable composition including a photocurable resin component and a photoswitchable photoinitiator including a P-type photochromic molecule. The present invention also includes a photoswitchable photoinitiator including a P-type photochromic molecule, preferably including a P-type diarylethene molecule, and a photocurable composition and method including such a photoswitchable photoinitiator.

The present invention aims to provide a compound having high fluorescence intensity as a fluorescent dye, and a colored curable resin composition capable of forming a color filter having excellent fluorescence intensity. The present invention relates to a colored curable resin composition containing a colorant, a resin, a polymerizable compound, and a polymerization initiator, the colorant comprising a benzo perylene compound.

The invention discloses a red pigment, a preparation method thereof and a red pigment dispersion liquid, the preparation method comprises the following steps: (1) preparing a copper-based catalyst: carrying out partial reduction calcination treatment on Cu2O powder in a reducing atmosphere which contains H2 to obtain the copper-based catalyst rich in oxygen vacancies; (2) mixing bromamine acid or salt thereof, the copper-based catalyst prepared in the step (1) and a solvent; (3) adding acid into the mixture obtained in the step (2), and carrying out condensation reaction; and (4) after the reaction is finished, carrying out post-treatment to obtain the red pigment. Through cooperation of the copper-based catalyst rich in oxygen vacancies and the process, the comprehensive technical effects that the synthesis reaction rate of the red pigment is remarkably increased, the particle size of primary particles is reduced, the primary particles are uniformly distributed, and the contrast ratio and dispersion stability in the optical filter are comprehensively improved are achieved.

To provide a compound capable of forming a color filter exhibiting good contrast, and a colored resin composition.SOLUTION: The colored resin composition contains a colorant and a resin, where the colorant comprises a compound represented by formula (I).SELECTED DRAWING: None

The invention relates to a plant cultivation method for modifying at least one agricultural property of a cultivated plant where the agricultural property is susceptible to modification by irradiating at least part of the plant with light comprising the steps of (a) providing at least one light source emitting a first spectrum comprising a wavelength of 300 to 900 nm; (b) subjecting said first spectrum to a partial or full conversion to obtain a second spectrum comprising a wavelength of 680 to 900 nm by means of at least one color converter wherein the obtained second spectrum has higher intensities of light at wavelengths of 680 to 900 nm compared to the first spectrum; and (c) irradiating at least part of the cultivated plant with the second spectrum obtained in step (b); wherein the at least one color converter comprises in a polymeric matrix material at least one terrylene diimide compound of formula (I) wherein the variables are as defined in the claims and the description. The present invention also relates to the use of said terrylene diimide compound of formula (I) in a color converter for providing horticulture light comprising a wavelength in the range from 680 to 900 nm.

This invention discloses a pH-responsive dye platform, its preparation method, and its applications. The invention achieves precise pH regulation by introducing a heteroaryl amine at position 9 of a traditional rhodamine dye and replacing different heteroatoms at position 10. Based on this strategy, a pH-responsive dye platform spanning the entire physiological pH range (the platform consists of a series of pH-responsive dyes suitable for different pH ranges) is constructed. Furthermore, the pH-responsive dyes in this platform possess excellent photophysical properties, sensitive pH response capabilities, and cover a response range from pH 0.5 to 7.0, meeting the monitoring needs of different pH microenvironments in vivo.

The purpose of the present invention is to provide a novel anthraquinone compound, and to provide: a dichroic dye constituted of the novel anthraquinone compound; a liquid crystal composition which contains the dichroic dye; and preferably a dimming element having excellent contrast and light resistance and containing said composition.　The present invention discloses an anthraquinone compound represented by formula A below (wherein R1 represents a C3-16 branched alkyl group, and R2 represents a hydrogen atom, a C1-8 straight-chain or branched alkyl group, or a C1-8 straight-chain or branched alkoxy group). In addition, the present invention discloses a liquid crystal composition including the anthraquinone compound and a liquid crystal material, and a dimming element containing said composition.