38results about "Styryl dyes" patented technology

Design and applications of a class of water-soluble small molecules represented by formula 1. The molecules, in their dilute aqueous solutions, exhibit lower critical solution temperature (LCST) phase transitions near room temperature, inducing a temperature triggered switching of opacity. Further, disclosed is a scalable smart window, akin to a radiative energy management system, that can be incorporated into the built environment for imparting energy efficiency. The window fabrication is facile wherein the aqueous solution is sandwiched between two transparent glass panes to enable modulation of light and heat transmission. The dynamic window of present invention represents with multifarious applications in developing scalable, smart energy management systems for indoor building environments is envisioned to be a major contribution towards cost effective smart glass technologies.

The invention discloses an electron-rich BODIPY type I photosensitive dye as well as a preparation method and application thereof. The photosensitive dye has a structure as shown in a general formula I. The BODIPY photosensitive dye compound with the I-type photodynamic performance disclosed by the invention has relatively strong near-infrared region absorption and electron transfer capabilities, and superoxide anions can be efficiently generated. Under the excitation of near-infrared light, the photodynamic killing can be carried out on normal oxygen and hypoxic cancer cells. Meanwhile, the electron-rich type BODIPY type I photosensitive dye has a good application prospect in the aspect of treating solid tumors in a living body.

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.

To provide an oil droplet staining agent and an inner mitochondrial membrane staining agent which can estimate the composition of oil droplets and the membrane structure (membrane composition) of the inner mitochondrial membrane.SOLUTION: A bisphosphoryl-crosslinked stilbene compound is represented by general formula (1) [where Ar1 and Ar2 are the same or different to represent a substituted or unsubstituted aromatic hydrocarbon ring or a substituted or unsubstituted heteroaromatic ring. R1 and R2 are the same or different to represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, or a substituted or unsubstituted (hetero)aryl group. Y1 and Y2 are the same or different to represent a phosphine oxide group or the like].SELECTED DRAWING: None

The present application relates to a dye compound of the formula (I), or a salt thereof. The present application relates to the use of the fluorescent dye or salt for various applications, such as for staining cells and for assessing the effect of an agent on a cell phenotypic state.

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

To provide a novel fluorescent dye and kit for readily detecting a compound and a composition or a cell capable of suitably using in a fluorescent dye etc. as well as, a new method for readily detecting a cell etc., and etc.SOLUTION: By applying a fluorescent dye containing a compound and a composition that can be used for a red fluorescent dye based on a specific pyrene structure to stain a cell, a tissue, or an organ, a detection method capable of readily detecting a cell, a tissue, or an organ is provided.SELECTED DRAWING: None

The invention belongs to the technical field of organic compounds and artificial boards, and relates to a whitening agent, a preparation method thereof and application of the whitening agent in whitening type medium density fiberboards, the whitening agent comprises the following components by mass percent: 2-5% of hydrogen peroxide, 0.2-0.6% of sodium silicate, 0.5-1.5% of sodium hydroxide, 0.1-0.4% of water-soluble stilbene fluorescent whitening agent and the balance of water. The preparation method comprises the following steps: sequentially adding the components into water at 60-65 DEG C, stirring and dissolving, and keeping the temperature at 60 DEG C for later use. When being applied, the cleaning agent is added in a wood chip washing process, the mass of the cleaning agent is 1-1.5% of the total mass of cleaning water for the first time, and 0.05-0.08% of the cleaning agent is supplemented per hour subsequently. According to the whitening agent, through the synergistic effect of chemical oxidation and physical color complementing, the whiteness of a fiberboard reaches 31-36 (only 14 in a conventional process), the physical and chemical properties meet the GB / T 11718-2021 standard, and the whitening agent is environmentally friendly, free of residues, simple to prepare and apply, suitable for industrial continuous production and capable of remarkably improving the added value of products.

The present invention provides a laser welding ink application tool that allows for the relatively thin, uniform, and easy application of laser welding ink to desired locations. [Solution] A laser welding ink coating tool 1 comprising an ink 5 containing a near-infrared absorbing dye and a solvent, a container 2 containing the ink 5, and a core material 3 from which the ink 5 contained in the container 2 is supplied, wherein the ink 5 can be coated from the core material 3.

The present disclosure is directed, in general, to (1) nonlinear optical (NLO) chromophores containing 3-methyl-2-cyclopenten-l- one based Fl-bridge groups, including (2) compositions / materials / resistive layers comprising NLO chromophores containing 3-methyl-2- cyclopenten-l-one based ll-bridge groups, and the methods of making the compositions / materials / resistive layers comprising NLO chromophores containing 3-methyl-2-cyclopenten-l-one based H- bridge groups (e.g., methods of drying and / or poling, and the like), (3) uses of NLO chromophores containing 3-methyl-2-cyclopenten-l-one based ll-bridge groups in electro-optic devices (e.g., EOMs). The nonlinear optical (NLO) chromophores have the following formula (II), wherein X is a cyclopenten-based Π-bridge having formula Π1 or Π2.

The invention provides an isophorone dye derivative LYC-CF3 as well as a synthesis method and application thereof. The specific name of the isophorone dye derivative is (E)-4-(2-(3-(dicyanomethylene)-5, 5-dimethylcyclohex-1-ene-1-yl) vinyl)-2-(trifluoromethyl) phenyl trifluoromethanesulfonate, and the structural formula of the isophorone dye derivative is shown in the description. The invention also provides a synthesis method of the derivative LYC-CF3, and a fluorescence imaging experiment of the derivative LYC-CF3 on O2 <-> in PC-12 cells. Through verification of a fluorescence spectrum and a laser confocal microscope, the derivative LYC-CF3 has quick response to O2 <-> in an in-vitro test and cells and relatively remarkable fluorescence imaging capability. Therefore, LYC-CF3 can be used as a fluorescent probe for in-vitro detection of O2 <-> and detection of O2 <-> in cells.

The application provides a semi-florin chemotherapy drug and a synthesis method thereof, relates to the technical field of drug synthesis, and the semi-florin derivative exhibits significant selective anti-tumor activity, and the mechanism of action is that after entering tumor cells, the semi-florin derivative can induce the increase of the level of reactive oxygen species (ROS) in the cells, causes the collapse of the mitochondrial membrane potential, and finally triggers the late apoptosis pathway of the cells.

Compounds of the formula (I), polymeric photoinitiators based upon compounds of the formula (I), photopolymerizable compositions comprising compounds of the formula (I), a process for preparing compounds of the formula (I), a process for the polymerization of compounds involving irradiating compounds of the formula (I), coated substrates coated with a photopolymerizable composition comprising compounds of the formula (I), process for the photographic production of relief images in which a coated substrate coated with a photopolymerizable compositions comprising compounds of the formula (I) is subjected to imagewise exposure and then the unexposed portions are removed with a developer, a color filter comprising a photosensitive resin comprising a compound of the formula (I), and a use of a compound of the formula (I) as a photoinitiator.

According to the application of the fluorescent probe based on the triphenylamine derivative in fluorescent ink, fingerprint powder and fish freshness indication, the structural formula of the fluorescent probe is shown in the specification, the fluorescence of the fluorescent probe is remarkably enhanced in a solid or high-water-content environment, and the problem of aggregation fluorescence quenching of a traditional dye is effectively solved. The fluorescent probe shows broad-spectrum and high-sensitivity fluorescent response to various volatile amines, and the recognition mechanism is clear. On the basis, the invention develops a two-channel visual freshness indication label, lossless and real-time monitoring of the freshness of the fish meat is realized through synchronous change of color and fluorescence, and the evaluation result is consistent with the grade determined by a national standard method. In addition, the probe can be prepared into fluorescent ink for information encryption and high-contrast fingerprint showing powder, and microscopic characteristics of hidden fingerprints can be clearly shown under sunlight / ultraviolet light. High-sensitivity sensing, intelligent packaging and multifunctional material application are integrated, and the intelligent packaging box has important practical value in the fields of food safety and public safety.

An optical filter includes: a transparent substrate; and an absorption layer on the transparent substrate, the absorption layer containing at least one dye (X) having a maximum absorption wavelength in 600 to 1000 nm. A laminate of the transparent substrate and the absorption layer satisfies all of the following characteristics (i-2) to (i-4): (i-2) a maximum internal transmittance in 700 to 850 nm is 35% or lower; (i-3) a difference between the maximum internal transmittance and a minimum internal transmittance in 700 to 850 nm is 20% or smaller; and (i-4) OD(A) and OD(B) satisfy the following relationship: OD(A) / OD(B)<0.07 where OD(A) is an average optical density of an internal transmittance in 500 to 600 nm and OD(B) is an average optical density of an internal transmittance in 700 to 850 nm.

This invention provides a compound that exhibits excellent heat resistance and oxidation resistance, and can stably maintain its absorbance properties even when maintained under high temperature or high temperature and high humidity conditions. It also provides a resin film in which desired optical properties are ensured by applying the compound, and provides applications for the compound. [Solution] The compound is the compound shown in chemical formula 1 below. JPEG2026069446000032.jpg4455 ...chemical formula 1

To provide 3D-printed products.SOLUTION: The present invention relates to urethane-acrylate-resin-based 3D-printed products having a colour distance ΔE of less than 20 from the L*a*b* coordinates for a colour number, beginning with "3", of the RAL colour chart, comprising at least one red perinone dye to be selected from 8,9,10,11-tetrachloro-12H-phthaloperin-12-one and / or 14H-benz[4,5]isoquino[2,1-a]perimidin-14-one dissolved therein, to the use of the red perinone dyes for producing 3D-printed products having a colour distance ΔE of less than 20 from the L*a*b* coordinates for a colour number, beginning with "3", of the RAL colour chart by photopolymerization, and to a method for increasing the lightfastness and the colouristic properties of photopolymerizable urethane-acrylate-resin-based compositions and 3D-printed products based thereon by means of at least one red perinone dye to be selected from 8,9,10,11-tetrachloro-12H-phthaloperin-12-one and / or 14H-benz[4,5]isoquino[2,1-a]perimidin-14-one dissolved therein.SELECTED DRAWING: None

Provided is a preparation method for a yellow oxidized azo and azo-stilbene dye, including the following steps: taking 4-nitrotoluene-2-sulfonic acid as a starting material, and taking water as a reaction solvent to obtain Direct Yellow 11 through a condensation reaction in the presence of choline hydroxide. A molecular structure of choline hydroxide contains both a quaternary ammonium group and a hydroxyl group. The hydroxyl group provides additional hydrophilicity, which is conducive to improving the solubility and dispersibility of the dye in aqueous media, thereby enhancing affinity of the dye with fibers. Choline hydroxide can effectively provide the alkaline environment required for the reaction, promoting the progress of dye synthesis, and controlling the selectivity and yield of the reaction better. The choline hydroxide can form hydrogen bonds with the sulfonic acid groups in the dye molecules, thereby enhancing intermolecular stability and improving light fastness and acid / alkali resistance of Direct Yellow 11.

The invention discloses a heptamethine cyanine photosensitizer with controllable pyroptosis intensity as well as a preparation method and application of the heptamethine cyanine photosensitizer. The method comprises the following steps: by taking IR808 as a parent nucleus, firstly, introducing tetraphenylethylene (TPE) into a meso-position to remarkably improve intersystem crossing efficiency, and converting the IR808 with negative pyroptosis into T808 with positive pyroptosis; then, PEG chains with the molecular weights of 550 Da, 1000 Da and 200 Da are connected to carboxyl on one side of the T808, and PT550, PT1000 and PT2000 are obtained. Along with the extension of a PEG chain, the hydrophilicity of the molecule is gradually enhanced, and the intensity of inducing the pyroptosis of tumor cells under the irradiation of 808 nm near-infrared light is PT550gt in sequence; t808gt, T808gt; pT1000 < gt >; and PT2000, so that accurate gradient regulation and control of pyroptosis activity are realized. The series of photosensitizers have excellent phototherapy performance and can be used for phototherapy of solid tumors.

The present application belongs to the technical field of pigment preparation, and provides petunidin anthocyanins and blue pigments, and a preparation method and application thereof. The present application extracts anthocyanins from Lycium ruthenicum Murr by alcohol extraction and concentration; removes sugars, proteins and other impurities in the crude extract of Lycium ruthenicum Murr anthocyanins by using a macroporous resin; and then purifies the anthocyanin freeze-dried powder by using a preparative liquid chromatography system, and collects petunidin anthocyanins mainly composed of petunidin-3-O-(trans-p-coumaroyl) rutinoside-5-O-glucoside. The petunidin anthocyanins obtained by the present application are complexed with metal ions, and the blue pigments obtained have good color and stability. Compared with the prior art technical solution of adding polysaccharides to improve the stability of natural blue pigments, the petunidin anthocyanins of the present application can also ensure the stability of the blue pigments without adding polysaccharides, and at the same time, will not reduce the color value of the blue pigments.

The invention discloses a preparation method of a stilbene benzene type fluorescent whitening agent suspension, which comprises the following steps: step one, dissolving a stilbene benzene type fluorescent whitening agent in an organic solvent, fully stirring and dissolving, filtering to remove undissolved whitening agent particles, and drying to obtain the stilbene benzene type fluorescent whitening agent suspension; preparing a whitening agent solution; 2, dissolving a stabilizer in water, fully stirring and dissolving to obtain an aqueous solution of the stabilizer, placing the aqueous solution in an ice-water bath, and maintaining the temperature of the aqueous solution at 0-5 DEG C; 3, dropwise adding the whitening agent solution obtained in the step 1 into the stabilizing agent aqueous solution obtained in the step 2, which is stirred at a high speed, at a constant speed to prepare a mixed solution; and 4, removing acetone from the mixed solution obtained in the step 3 by using a rotary evaporator under a reduced pressure condition, and recovering the acetone to obtain the distyryl benzene type fluorescent whitening agent nanocrystal suspension. The invention provides a stilbene benzene type fluorescent whitening agent with small particle size and good stability, which is prepared by a simple method.

The application discloses an AIE fluorescent dye, a structural formula of which is shown in the following formula (I), wherein R1 and R2 are independently selected from alkyl alcohol with carbon number of 1-6; and X is selected from water-soluble anions. The fluorescent dye disclosed by the application has AIE characteristics, can realize rapid staining of living cells, and the staining depth can be deep to the nucleolus of the cell nucleus, so that the morphology of the whole cell tissue is clear and visible; is expected to be applied in the field of living cell fluorescence imaging, and further used for preparing a fluorescent kit for rapid diagnosis of cancer cells; the fluorescent probe has good water solubility, small cytotoxicity and good biocompatibility; the fluorescent color is orange red, the Stokes shift is large, and the anti-self-fluorescence interference ability is strong.

The application relates to an electronic device comprising an anode, a cathode, at least one emitting layer between the anode and the cathode, at least one p-doped layer A containing a mono-triarylamine as a host, and at least one layer B containing a mono-triarylamine. The invention further relates to a p-doped mixture comprising a mono-triarylamine of formula (II), (III) or (IV) as a host and an electron acceptor compound as a dopant, and the use of the mixture in an electronic device.

The present invention aims to provide an optical filter that has excellent weather resistance, excellent transmittance in the visible light region, excellent shielding in the near-infrared light region, particularly over a wide range including around 1200 nm, and exhibits minimal change in spectral characteristics even at high incidence angles. [Solution] The present invention relates to an optical filter comprising, in this order, a dielectric multilayer film 1, a substrate having a near-infrared absorbing glass and a resin film, and a dielectric multilayer film 2, wherein the resin film contains a near-infrared absorbing dye and a resin, the near-infrared absorbing glass is phthalic acid glass containing P, Cu, and F, and the optical filter satisfies all of the specific spectral characteristics (i-1) to (i-3) and (i-5), and (i-6) or (i-7).

This invention pertains in general to ribosome imaging, in particular ribosome imaging in live cells. In particular, the invention relates to a compound (probe) that selectively binds with eukaryotic ribosomes, such as mammalian, human and / or mouse ribosomes. Also provided is for a method of preparing the compound and for a method for detecting a eukaryotic, preferably mammalian, preferably human and / or mouse, 60S ribosomal subunit or ribosome using the compound.

The application provides a preparation method of quaternary ammonium base and application thereof in dye synthesis. Propylene oxide is added into trimethylamine, nucleophilic ring-opening addition reaction of trimethylamine to the epoxy group of propylene oxide is carried out, hydroxypropyltrimethylammonium hydroxide is obtained, then the hydroxypropyltrimethylammonium hydroxide is used to replace sodium hydroxide in the dye synthesis process, inorganic salt is not introduced into the reaction system, and after the reaction is completed, multiple water washing and salt removal are not needed, so that the wastewater amount and salt load can be obviously reduced.

To provide a composition for optical sensors that can form an optical filter for optical sensors having excellent properties relating to visible light-transmissive window range, infrared ray-shielding range, heat resistance, chemical resistance, coating defect reduction after low-temperature storage, and coating defect reduction after long-term low-temperature storage.SOLUTION: A composition for optical sensors contains a copolymer (P) of an unsaturated mixture containing (a1) at least one selected from the group consisting of an unsaturated carboxylic acid and an unsaturated carboxylic acid anhydride and (a2) at least one selected from the group consisting of an oxiranyl group-containing unsaturated compound and an oxetanyl group-containing unsaturated compound, and a dye [Q] composed of at least one polymethine compound.SELECTED DRAWING: None

This reduces the color change in the front and oblique directions of a laminate that has a light-reflecting layer that serves as a cholesteric liquid crystal layer. [Solution] The optical laminate comprises, in order from the external light incident side, a first support, a light-reflecting layer including a cholesteric liquid crystal layer (L-body), and a second support, having a reflection band with a full width at half maximum of 40 to 70 nm with respect to the maximum reflection wavelength in the visible light range, having an adhesive layer between the first support and the light-reflecting layer, the adhesive layer containing at least one dye that reduces hue change, the reflection hue adjusting dye having a maximum absorption wavelength located 30 to 140 nm shorter wavelength away from the maximum reflection wavelength of the light-reflecting layer, and at least one adhesive layer between the light-reflecting layer and the second support containing at least one dye that corrects the transmitted hue, and the transmitted hue of the optical laminate is L * a * b * Hue values ​​(a) in the color space (CIE1976) * s and b * In s), a * s = -5.0 to 5.0, b * An optical laminate where s = -5.0 to 5.0.

The application discloses a water-soluble AIE fluorescent probe, and a structure formula is shown in the following formula (I), wherein R1 and R2 are independently selected from alkyl alcohol with carbon number of 1-6; X is selected from water-soluble anions, and M is selected from water-soluble cations. The fluorescent probe has AIE characteristics, can realize rapid and efficient staining of cytoplasmic membranes, and does not need to be cleaned; the fluorescent probe has good water solubility, small cytotoxicity, and can be used in in vivo cell fluorescence imaging; the fluorescent probe has orange red fluorescence color, large Stokes shift, and strong anti-self-fluorescence interference capability.

The invention relates to the field of chemical organic synthesis, in particular to a preparation method of a multi-component composite triazinyl stilbene type fluorescent whitening agent, which specifically comprises the following steps: adding cyanuric chloride into water for pulping, adding a complexing agent for complexing metal ions, dropwise adding DSD acid for reacting with cyanuric chloride, adding an acid-binding agent for maintaining the reaction pH, adding aniline for substitution, and then adding triazinyl stilbene type fluorescent whitening agent to obtain the multi-component composite triazinyl stilbene type fluorescent whitening agent. Then diethanol amine and 6-aminocaproic acid are added in sequence to replace chlorine atoms respectively, generation of by-products is reduced, through compounding of the diethanol amine and the 6-aminocaproic acid, hydrophilic groups are introduced, the whiteness and the retention rate of the product are greatly improved, use of a stabilizer in the product is reduced, the affinity of the product to fibers is improved, and the product quality is improved. And the applicability of the product is widened. Finally, sodium citrate is added for competitive complexing of Ca < 2 + >, Mg < 2 + > and fatty acid polyoxyethylene ether-9 to form a protective layer, Ca < 2 + > and Mg < 2 + > are prevented from making contact with carboxylate radicals, and the problem of hard water sensitivity caused by introduction of 6-aminocaproic acid into the product is solved.