39results about "Coumarine dyes" patented technology

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.

Embodiments of the present disclosure relate to multi-dye labeled polyphosphodiester scaffolds, as well as methods and kits for sequencing by synthesis utilizing such multi-dye labeled, scaffolds as post-incorporation labeling reagents.

The invention relates to the technical field of fluorescent dye preparation, in particular to an organic fluorescent dye and a preparation method thereof.The preparation method comprises the following steps that m-diethylaminophenol and Meldrum's acid are catalyzed in an ethanol-water solvent through a supported catalyst and stirred to react in an oil bath, and an intermediate is obtained through acidification crystallization after cooling; and heating the intermediate, anhydrous potassium carbonate and ethyl iodoacetate in N, N-dimethylformamide under the protection of nitrogen to carry out alkylation reaction, and carrying out recrystallization, saponification hydrolysis and purification on the reaction liquid to obtain the organic fluorescent dye coumarin 343. The supported catalyst prepared by the invention shows good catalytic performance, stability and recoverability in the preparation reaction of the organic fluorescent dye.

Invisible fluorescent solvent inkjet ink compositions comprising a fluorescent colorant comprising a coumarin, a solvent, a binder resin, and a conductive agent are described.

The purpose of the present invention is to provide: a photochromic compound having an excellent color fading rate and excellent durability; a naphthol derivative that can become an intermediate for the photochromic compound; and a curable composition, an optical article, a lens and eyeglasses each containing the photochromic compound. According to embodiments, a photochromic compound having a backbone represented by formula (1) is provided. In formula (1), M represents C, Si or Ge; R1 represents a haloalkyl group having 1 to 20 carbon atoms inclusive; R2 represents a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms inclusive or a substituted or unsubstituted haloalkyl group having 1 to 20 carbon atoms inclusive.

The present invention relates to dynamic covalent chemistry of spiropyrans and application thereof. In particular, a process is provided to synthesize spiropyrans via an exchange reaction. Thereby, substitution patterns at spiropyrans may be firstly synthetically accessible. The provided spiropyrans contain specific substituents and substitution patterns and are used as dual color photoinitiators, which result in improved dual color volumetric printing (xolography). The present invention relates further to a process for locally polymerizing a starting material by dual color photopolymerization. In particular, photoinitiators are provided, which cause efficient curing of photopolymerizable formulations upon irradiation with two different wavelengths, and which may be used for volumetric printing (xolocure initiators).

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.

Disclosed herein are colorants and methods of making and use thereof. For example, disclosed herein are colorant compositions comprising a hydroxyphenyl pyranoanthocyanin of Formula (I). Also disclosed herein are thermal degradation compounds derived via thermal degradation of any of the colorants disclosed herein. Also disclosed herein are thermal degradation compounds derived via thermal degradation of 10-catechyl-pyranocyanidin-3-O-β-glucoside. In some examples, the thermal degradation compound comprises 4-carboxy-2-(3,4-dihydroxyphenyl)-5,7-dihydroxychromenylium. Also disclosed herein are compositions, beverages, food products, edible products, cosmetic products, and / or dye sensitized solar cells comprising any of the colorants and / or thermal degradation compounds disclosed herein. Also disclosed herein are methods of making any of the colorants and / or thermal degradation compounds disclosed herein.

Compounds useful as fluorescent or colored dyes are disclosed. The compounds have the following structure (I): or a stereoisomer, tautomer or salt thereof, wherein R1, R2, R3, R4, R5, L1, L3, L4, L6, L7, L8, M1, M2, q, w and n are as defined herein. Methods associated with preparation and use of such compounds are also provided.

The invention relates to a sealant system comprising at least one base component, comoprising at least one thiol- terminated polymer selected from the group consisting of polysulfides, polythioethers, polyethers and copolymers thereof; and at least one hardener component, comprising at least one polyepoxide, wherein the base component further comprises at least one non-ionic photo-latent base having the general formula (PCG)-(BG)n, wherein PCG stands for a photocleavable group; BG stands for a base group; n is 1 or 2; the base formed after cleaving the bond between PCG and BG is a non-ionic base, and possesses a pKa value of the conjugate acid of ≥ 10.0; and the non-ionic photo-latent base has a photoactivation wavelength for cleaving the bond between PCG and BG in the range of 300 nm to 420 nm.

Described herein is a beta-glycoside of structural formula (I) wherein X1 or X2 is-C (= O) OR, R is an alkyl group comprising from 1 to 6 (1 to 4) carbon atoms, and Y is a monovalent sugar selected from the group consisting of beta-D-glucose, beta-D-galactose, beta-D-glucuronic acid, N-acetylglucosamine or galactosamine, where when X1 is-C (= O) OR then X2 is-H, and when X2 is-C (= O) OR then X1 is-H. Such beta-glycosides can be used as indicators, such as biological indicators. (I)

To provide an ink jet composition with high chroma saturation in a red direction and excellent color developability of fluorescence.SOLUTION: An ink jet composition contains a compound represented by a Formula (1), a dispersant, and water. The dispersant contains a compound having a sulfonic acid group. In the Formula (1), R1 represents a hydrogen atom or a cyano group.SELECTED DRAWING: None

The purpose of the present disclosure is to provide: a photochromic compound which has excellent repetition durability and excellent solubility in a matrix material; a curable composition which contains the photochromic compound; an optical article; a lens; and eyeglasses. An embodiment of the present invention provides a photochromic compound which has a skeleton represented by Formula (1). In Formula (1), M represents C, Si, or Ge. R1 represents a hydrogen atom or a substituent. In cases where R1 is a substituent, the substituent is not a halogen atom or a trifluoromethyl group. R2 represents a hydrogen atom or a substituent. In cases where R2 is a substituent, the substituent is not a halogen atom. R3 and R4 each independently represent a linear or branched alkyl group. R3 and R4 have structures that are different from each other.

The invention relates to spiropyrans and a method of making the same. In particular, the present invention provides a method of exchanging the indole and salicylaldehyde moieties of spiropyrans in a reversible reaction. The method is used for synthesizing two-color photoinitiators with specific substituents and substitution patterns, which improves two-color volume printing (two-color volume printing). In addition, the invention also discloses a method for locally polymerizing a starting material through two-color photopolymerization.

The present invention relates to spiropyrans and process for the manufacture of them. In particular, a method is provided to exchange the indole and salicylaldehyde part of a spiropyran in a reversible reaction. The method is used for the synthesis of dual color photoinitiators with specific substituents and substitution patterns, which result in improved dual color volumetric printing (xolography). Furthermore, a process for locally polymerizing a starting material by dual color photopolymerization is disclosed.

The present disclosure relates to a photobase generator comprising a coumarin moiety, a visible light absorbing moiety, and a linker complex. In one aspect, applying visible light to the photobase generator provides a basic body for making polyimides.

A color conversion sheet according to one embodiment of the present invention includes a wavelength conversion layer in which an organic phosphor is dispersed in a resin matrix and a light absorption layer in which an organic light absorber located on one surface of the wavelength conversion layer is dispersed in a binder resin. By absorbing short-wavelength blue light that degrades the organic phosphor without affecting the luminescence characteristics of the organic phosphor contained in the wavelength conversion layer, it is possible to use an environmentally safe organic phosphor while exhibiting excellent color reproduction rate and brightness characteristics, minimal color change during light irradiation not only at room temperature but also in high-temperature environments, excellent brightness reliability, and superior performance from the viewpoint of protecting eyesight.

Photo switchable photoinitiators comprising a photochromic molecule including one or more substituents at least one of which comprises a substituted or unsubstituted alpha- diketone moiety represented by general formula Ar1-C(=O)-C(=O)-Ar2, wherein Ar1 and Ar2 are the same or different and are independently a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group. Preferably the photochromic molecule comprises a benzo spiropyran molecule, a naphthopyran molecule, or a spironaphthoxazine molecule. Photohardenable compositions, hardenable resin compositions, and methods for forming an object, which photohardenable compositions, hardenable resin compositions, and methods include a photo switchable photoinitiator described herein, are also disclosed.

Provided are photochromic compounds represented by General Formula 1, photochromic compounds represented by General Formula 2 and photochromic compounds represented by General Formula 3. In General Formula 1, R100 to R111, and X1 and X2 each independently represent a hydrogen atom or a substituent, and two or more substituents may be bonded to form a ring structure. In General Formula 2, R200 to R211, and X3 and X4 each independently represent a hydrogen atom or a substituent, and two or more substituents may be bonded to form a ring structure. In General Formula 3, R300 to R311, and X5 and X6 each independently represent a hydrogen atom or a substituent, and two or more substituents may be bonded to form a ring structure.

Described herein are invisible fluorescent solvent ink jet ink compositions that include a fluorescent colorant comprising a coumarin, a solvent, a binder resin, and a conductive agent.

The purpose of the present disclosure is to provide: a photochromic compound having excellent repeated durability and solubility in a matrix material; a curable composition containing the photochromic compound; an optical article; a lens; according to one embodiment, a photochromic compound having a skeleton represented by formula (1) is provided. In formula (1), M is C, Si, or Ge. R1 is a hydrogen atom or a substituent group. And when R1 is a substituent, R1 is not a halogen atom or a trifluoromethyl group. And R2 is a hydrogen atom or a substituent group. And when R2 is a substituent, R2 is not a halogen atom. And R3 and R4 are respectively and independently straight-chain or branched-chain alkyl. And R3 and R4 have different structures from each other.

A photochromic compound of the present invention comprises at least two monovalent photochromic basic structure groups PC including a T-type photochromic moiety, the photochromic basic structure groups being bonded to an organic group having a non-SO aromatic ring containing neither a sulfur atom nor an oxygen atom.

This disclosure relates to a photobase generator comprising a coumarin moiety, a visible light absorbing moiety, and a linker complex. In one embodiment, a base moiety for producing polyimide is provided by irradiating the photobase generator with visible light.

The present invention addresses the problem of developing a fluorescent reagent with which lipid droplets from the scale of cultured cells to the scale of an individual can be imaged at high sensitivity, and which can be used in combination with a green fluorescent protein. The present invention provides a reagent for detecting lipid droplets, the reagent containing a compound represented by formula (I). (In the formula, m represents an integer of 3-5, n represents an integer of 3-5, and R represents a C1-5 alkyl, a C6-12 aryl, a C7-13 aralkyl, or hydrogen.)

The invention provides a photosensitive coloring composition, a cured product, an organic electroluminescent element and an image display device, wherein surface roughness of an electrode is less generated after heat treatment. The photosensitive coloring composition comprises (a) a colorant, (b) an alkali-soluble resin, (c) a photopolymerization initiator, (d) an ethylenically unsaturated compound, (e) a solvent and (f) a dispersant, and is characterized in that the colorant (a) contains a compound represented by a specific general formula (I), a geometric isomer of the compound, a salt of the compound or a salt of the geometric isomer of the compound; the dispersant (f) contains an acrylic copolymer (f1) which contains repeating units represented by specific general formulae (1), (2) and (3) and does not have a repeating unit containing a quaternary ammonium group, and the content of chlorine atoms in the photosensitive colored composition is 0.05 mass% or less with respect to the total solid content of the photosensitive colored composition.