63results 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.

A photochromic compound according to the present invention is characterized by comprising at least two monovalent photochromic basic structural groups PC that include a T-type photochromic site, wherein the photochromic base structural groups are bonded to an organic group having a non-SO aromatic ring that does not include a sulfur atom or an oxygen atom.

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 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 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 disclosure provides an aza[3.2.1]bridged ring substituted fluorescent dye and a preparation method and use thereof. According to the fluorescent dye, by adopting an aza[3.2.1]bridged ring as a substituent of the fluorescent dye, not only are the brightness and photostability of the fluorescent dye obviously improved, but also the phenomenon of spectral blue shift caused by irradiation of the dye for a long time is completely avoided. Meanwhile, the water solubility of the fluorescent dye can be effectively improved, and good membrane permeability of the fluorescent dye is maintained. The present disclosure further provides embodiments of functionalized derivatives of the dye in single molecule imaging, confocal imaging and super-resolution imaging of biological samples.

The present application relates to substituted coumarin derivatives and their uses as fluorescent labels. These compounds may be used as fluorescent labels for nucleotides in nucleic acid sequencing applications.

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.

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.

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.

To provide a composition for a near-infrared blocking filter and an image sensor including the near-infrared blocking filter.SOLUTION: An image sensor is provided, comprising a substrate having a first surface, a second surface opposite the first surface, and a plurality of pixels, each having a photoelectric conversion area; and a near-infrared blocking filter provided on the second surface of the substrate, the near-infrared blocking filter comprising a mixture of a first cyanine dye represented by general formula 1, a second cyanine dye represented by general formula 2, and a third cyanine dye represented by general formula 3 or 4.SELECTED DRAWING: Figure 5

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 a novel coumarin-based reagent, and more specifically provide a conjugate including at least one coumarin-based reagent disclosed.SOLUTION: In some embodiments, the existence of the coumarin in a coumarin-based reagent allows detection of a label difficult to detect in general, for example, specific hapten.SELECTED DRAWING: None

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

To provide a red coloring composition which is useful for thinning of a color filter and improvement of luminance.SOLUTION: A red coloring composition contains a coloring agent (A), a resin (B), a polymerizable compound (C), a polymerization initiator (D), and a solvent (E), wherein the coloring agent (A) contains an orange coloring agent (A-1) satisfying the condition (X), a red coloring agent (A-2), and one or more yellow coloring agents (A-3) selected from the group consisting of an azo dye, an isoindoline dye and a coumarin dye containing metal, and a content of the yellow coloring agents (A-3) is 250 pts.mass or less with respect to 100 pts.mass of the orange coloring agent (A-1). [Condition (X)]: Absorbance at a wavelength 480 nm is 0.40 or more, absorbance at a wavelength of 530 nm is 0.55 or more, and absorbance at a wavelength of 580 nm is 0.20 or less.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.