124results about "Styryl dyes" patented technology

An optical filter includes: a substrate, an antireflection layer 1 including a dielectric multilayer film laminated on one main surface side of the substrate, and an antireflection layer 2 including a dielectric multilayer film laminated on the other main surface side of the substrate. The substrate includes a near-infrared ray absorbing glass and a resin film, the resin film includes a resin, a UV dye having a maximum absorption wavelength in 350 nm to 410 nm in the resin, and an IR dye having a maximum absorption wavelength in 700 nm to 850 nm in the resin, and the optical filter satisfies all of the characteristics (i-1) to (i-7).

The present invention discloses a preparation method of yellow azoxy and azo stilbene dyes. Using 4-nitrotoluene-2-sulfonic acid as a raw material and water as a reaction solvent, in the presence of choline hydroxide, dye yellow 11 is obtained through a condensation reaction. The molecular structure of choline hydroxide contains a quaternary ammonium salt group and a hydroxyl group. The hydroxyl group provides additional hydrophilicity, which helps to improve the solubility and dispersibility of the dye in an aqueous medium and enhance the affinity between the dye and the fiber. Choline hydroxide can effectively provide the alkaline environment required for the reaction, promote the synthesis reaction of the dye, and better control the selectivity and yield of the reaction. Since the choline hydroxide molecule contains a hydroxyl group, it can form hydrogen bonds with the sulfonic acid groups in the dye molecule, enhance the stability between dye molecules, and improve the light fastness and acid and alkali resistance of the dye. Using choline hydroxide not only optimizes the reaction conditions, improves the purity and yield of the dye, but also significantly improves the performance of dye yellow 11.

The present invention relates to an optical filter which is provided with a base material and a dielectric multilayer film that is superposed, as an outermost layer, on at least one main surface of the base material, wherein: the base material comprises a resin film that contains a resin and a near-infrared absorbing dye (A); and the dye (A) satisfies a specific spectral characteristic in the spectral transmittance curve of a coating film that is obtained by applying the dye (A), which has been dissolved in the resin, onto an alkali glass plate.

The invention relates to a fluorescent whitening agent, in particular to a stilbene biphenyl fluorescent whitening agent and a preparation method thereof. The stilbene biphenyl fluorescent whitening agent is a crystal represented by a formula (1), and contains crystal water or an isomer. The fluorescent whitening agent CBS provided by the invention comprises rod-shaped, needle-shaped and lamellar crystal forms. In the invention, all crystal forms are measured by adopting an X-ray diffractometer, and the water content is precisely measured by adopting a KarlFischer titration method. The X-ray scanning spectrum peak attributions of the crystal samples obtained by different preparation methods have significant difference. # imgabs0 #

The invention discloses a triarylmethane type I photosensitive dye as well as a synthesis method and application thereof. The structure of the dye is shown as a general formula I; intramolecular charge separation is optimized by regulating substituent groups, and the generation efficiency of superoxide anions and hydroxyl radicals is remarkably improved. According to the synthesis method, 4-diphenylaminobenzaldehyde or 4-vinyl benzaldehyde is used as a raw material, efficient preparation is achieved through the steps of condensation, oxidation and the like, the raw material is easy to obtain, and operation is easy and convenient. The dye has strong absorption at the wavelength of 600-630 nm, is suitable for red light triggered photodynamic therapy (PDT), especially keeps high reactive oxygen yield under the hypoxic condition, and breaks through the oxygen dependence limitation of traditional PDT. Experiments show that the dye can induce ferroptosis of tumor cells, has the functions of fluorescence imaging and treatment, and has wide application prospects in the fields of antitumor drugs, in-vivo fluorescence labeling, photoresponsive functional preparations and the like.

The invention discloses a preparation method and application of near-infrared fluorescent dye DOM-O for acute alcoholic liver injury detection. The specific chemical structural formula of the near-infrared fluorescent dye DOM-O is shown in the specification. The near-infrared fluorescent dye prepared by the invention has excellent fluorescence imaging performance, can realize specific fluorescence imaging diagnosis of the acute alcoholic liver injury, and provides an imaging dye with application prospect for early detection and clinical diagnosis of the acute alcoholic liver injury.

The present application relates to an optical filter having a substrate and a dielectric multilayer film laminated on at least one main surface side of the substrate and serving as an outermost layer, wherein the substrate has a resin film containing a pigment (U) having a maximum absorption wavelength in the range of 360 nm to 395 nm in dichloromethane, a pigment (A) having a maximum absorption wavelength in the range of 600 nm to 800 nm in dichloromethane, and a resin, and the optical filter satisfies specific spectral characteristics.

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

The application discloses a kind of two-photon fluorescent probe for detecting industrial hydrogen sulfide or sodium sulfide and a preparation method thereof, and relates to the technical field of fluorescent probe.The application designs and synthesizes a compound with D-Π-A structure, which can be used as a two-photon fluorescent probe to selectively detect H2S, and is suitable for detecting H2S or Na2S residue in industry, with high sensitivity and good specificity.The reaction product of the compound and H2S can be used as an organic fluorescent dye.

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.

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

The present invention relates to compounds of Formula (I) and their use in the detection and monitoring of autophagic activity, as well as their use in the identification, treatment, prevention, or amelioration of diseases associated with dysregulation of autophagy.

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.

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 "2" of the RAL colour chart, comprising at least one orange methine dye dissolved therein, to the use of orange methine 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 of the RAL colour chart beginning with "2" by photopolymerization-based 3D printing, and to a method for increasing the lightfastness and colouristic properties of photopolymerizable urethane-acrylate-resin-based compositions and 3D-printed products to be produced therefrom having a colour distance ΔE of less than 20 from the L*a*b* coordinates for a colour number beginning with "2" of the RAL colour chart by means of at least one orange methine dye dissolved therein.SELECTED DRAWING: None

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 invention belongs to the field of synthesis of fluorescent dyes, and particularly relates to a dicationic fluorescent dye with aggregation-induced emission property, and a preparation method and application of the dicationic fluorescent dye. The invention relates to a compound or a salt thereof, the compound or the salt thereof has a structure as shown in a formula I: # imgabs0 #, R1 is selected from at least one of the following structures: # imgabs1 # R2 is substituted or unsubstituted C1-12 alkane; and X is a monovalent anion.

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.

The invention relates to the field of D21H21 / 30, and in particular to a stable acid-resistant brightener and a preparation process thereof. The preparation raw materials at least include cyanuric chloride, a sulfonic acid compound, an amine compound and an amino acid. Glycine and glutamic acid are added by design to carry out a condensation reaction, and a liquid fluorescent brightener containing an asymmetric structure is obtained after the reaction, thereby greatly improving the storage stability of the liquid fluorescent brightener. Meanwhile, the liquid fluorescent brightener with a symmetrical structure and the liquid fluorescent brightener with an asymmetric structure generated after the reaction have a composite whitening effect, and the optical behaviors generated by the liquid fluorescent brighteners of different components do not interfere with each other, thereby greatly improving the whitening effect of the stable acid-resistant brightener, solving the problem that the surface of the obtained paper is dark and the whiteness is not high in the process of applying the fluorescent brightener to papermaking, and ensuring the whiteness, water solubility and anti-cation interference ability of the product.

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

The present invention relates to the field of optical imaging. More specifically, the present invention relates to compounds of the cyanine family with near-infrared emission and their conjugates with biological ligands, characterized by improved physicochemical and biological properties. The present invention also relates to the use of these compounds as optical diagnostic agents in the imaging or therapy of solid tumors, their preparation methods, and compositions containing them. The compound has formula (I), where X is a direct bond or -O-; Y is a group selected from linear or branched C-C alkyl, C-C cycloalkyl, and heterocyclyl substituted by at least two hydroxyl groups; R and R are each independently linear or branched C-C alkyl substituted by a group selected from -SOH, -COOH, -CONH, and -COO-C-C alkyl; and R is hydrogen, -SOH, or linear or branched C-C alkyl substituted by -COOH or -CONH-Y, where Y is a group selected from linear or branched C-C alkyl, C-C cycloalkyl, and heterocyclyl substituted by at least two hydroxyl groups. JPEG2023530575000042.jpg72166

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 discloses a photosensitive dye with a D-pi-A structure and taking triphenylamine as an electron donor and a preparation method and application thereof, and belongs to the field of solar cells, the photosensitive dye takes triphenylamine as the electron donor, a pi conjugate bridge is selected from one or a combination of two of thiophene, ethylene and pyridine, and the electron acceptor is pyridine or cyano. The photosensitive dye disclosed by the invention is diversified in structure, the dye performance can be improved, and relatively high photoelectric conversion efficiency can be obtained; the invention also provides a preparation method of the corresponding photosensitive dye. The photosensitive dye is generated by reaction of electron donors with different structures. The preparation method is simple in process, low in preparation cost and environment-friendly; the invention also provides application of the corresponding photosensitive dye, the photosensitive dye is used for modifying a perovskite solar cell, and the photoelectric conversion efficiency of 15.78% is obtained through tests and is improved by 25.44% compared with that of a control device.

The present disclosure relates to a cyanine compound represented by formula (1). In formula (1), ring A1 and ring A2 each represents an optionally substituted aromatic hydrocarbon ring, an optionally substituted aromatic heterocyclic ring, or an optionally substituted fused ring containing these ring structures, ring B1 and ring B2 each represents a hydrocarbon ring optionally having a substituent and / or a fused ring structure, or a heterocyclic ring optionally having a substituent and / or a fused ring structure, and ring B1 and ring B2 each represents a hydrocarbon ring optionally having a substituent and / or a fused ring structure. (In the formula, R1 and R2 each represent an organic group, L represents a methine chain, and X-represents a monovalent anion in which the pKa of the conjugated acid is-8.0 or less. # imgabs0 #

The invention discloses a flavonoid fluorescent dye, a supramolecular fluorescent probe, a preparation method of the supramolecular fluorescent probe and a pyriproxyfen detection method. The probe is constructed by spontaneously assembling the albumin derivative and the flavonoid fluorescent dye in a buffer solution. The detection mechanism is shown as follows: the flavonoid dye presents characteristic red fluorescence in a free state, and obvious fluorescence blue shift is triggered after the flavonoid dye is combined with albumin. When pyriproxyfen is introduced into the system, hydrophobic molecules enter an albumin hydrophobic cavity in a competitive binding manner, so that dye molecules have a replacement effect. In the process, along with the bidirectional response of a fluorescence signal, namely, the yellow fluorescence intensity and the pyriproxyfen concentration are in negative correlation, and the reconstructed dye aggregation state triggers the enhancement of a green fluorescence channel signal, so that the quantitative conversion of the fluorescence chroma of the solution from yellow to green is finally realized. Based on the ratio-type fluorescence signal, the probe system has an obvious colorimetric effect when being used for detecting pyriproxyfen in environment, food and the like, and the color change can be directly observed by naked eyes.

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 invention provides: a photochromic curable composition which contains (A) a (meth)acrylate composition that contains from 24 to 100% by mass of a polyfunctional (meth)acrylate which has three or more (meth)acryloyl groups in each molecule and (B) a photochromic compound that is obtained by bonding at least one specific naphthopyran to a long-chain group having a number average molecular weight of from 300 to 10,000; and a photochromic optical article which is obtained by polymerizing this photochromic curable composition.

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.