112results about "Triarylmethane dyes" patented technology

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.

Disclosed herein is a microcavity and patterns thereof comprising a photoluminescent material positioned between two reflectors, wherein the photoluminescent material comprises a cationic molecular dye, a macrocyclic anion receptor host, and an anion embedded within the macrocyclic anion receptor host and methods of making and using the same.

The present invention relates to a process, an apparatus and a photoswitchable photoinitiator for locally polymerizing a starting material by bichromatic photopolymerization, as well as a method for volume printing (xolography) of shaped bodies. In particular, photoinitiators are provided that induce the curing of photopolymerizable formulations upon irradiation with two different wavelengths and can be used for volume printing (xolocure initiators).

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 a process for preparing a compound corresponding to the formula, this process being characterized in that it comprises at least one oxidation step of sulfonated triphenylmethane of formula [Chem V] with a quinone selected from 1,4-benzoquinone, 1,2-benzoquinone, a dialkyl(C1-C4) 1,4-benzoquinone, a dialkyl(C1-C4) 1,2-benzoquinone, a monoalkyl(C1-C4) 1,4-benzoquinone, a monoalkyl(C1-C4) 1,2-benzoquinone. Novel crystalline form of Patent Blue, sodium salt.

To provide: a triarylmethane dye excellent in heat resistance; and a coloring agent for a color filter having favorable color characteristics by means of a colored composition using the dye.SOLUTION: The invention provides: a triarylmethane dye represented by the general formula (1) in the figure; a colored composition containing the dye; a coloring agent for a color filter; and a color filter. (In the formula (1), R1 to R4 each represent H, an alkyl group, or an aromatic hydrocarbon group; R5 and R6 each represent H, a halogen atom, OH, CF3, NO2, CN, an alkyl group, an alkoxy group, or an aryloxy group; AH represents a heterocyclic group; An represents an anion; and m represents a natural number.)SELECTED DRAWING: None

The purpose of the present invention is to provide: a photochromic compound having excellent temperature dependency and an excellent color fading speed; a naphthol derivative that can be an intermediate for the photochromic compound; and a curable composition, an optical article, a lens, and an eyeglass each including the photochromic compound. An embodiment of the present invention provides a photochromic compound having a skeleton represented by formula (1). In formula (1), M is C, Si, or Ge. Ring A is a substituted or unsubstituted aromatic ring, a substituted or unsubstituted aromatic heterocyclic ring, or a substituted or unsubstituted condensed polycyclic ring in which an aromatic ring or an aromatic heterocyclic ring and the substituted or unsubstituted aromatic ring or the substituted or unsubstituted aromatic heterocyclic ring are condensed. Z1 is a group represented by formula (1a) or a group represented by formula (1b).

The present application provides a modified color dye, its preparation method and application. The composition of the present application contains the modified color dye, and the structure contains a naphthalene sulfonic acid group. Compared with conventional color dyes, the modified color dye can form a hydrogen bond with the oxygen atom in the photosensitive combination. On the other hand, the modified color dye has a large molecular weight and a small binding force with aluminum. After development, there is no residual color in the blank area. The modified color dye has the characteristics of high photosensitivity and mild development conditions, thereby effectively improving the dot quality of the plate material, which is beneficial to ensure the image reproduction and precision. At the same time, due to the mild development conditions, the amount of sludge residue after development is greatly reduced.

Sulfonate-containing water-solubilizing peptides are provided. Such water-solubilizing peptides can be attached to, for example, a dye or a tandem dye to increase the solubility thereof. Also provided are methods of using the dyes that include the water-solubilizing peptides, as well as kits that include such dyes.

To provide a color filter excellent in light resistance.SOLUTION: A color filter according to the present invention includes pigment and binder, and has chloride ion content of 10 ppm or more and 400 ppm or less.SELECTED DRAWING: None

To provide a thermochromic color memory composition that employs a specific ester compound and exhibits a color memory effect in a low temperature range.SOLUTION: A thermochromic color memory composition comprising at least: (i) an electron-donating chromogenic organic compound, (ii) an electron-accepting compound, and (iii) a specific reaction medium for controlling the chromogenic reaction of the component (i) and the component (ii), wherein the thermochromic color memory composition undergoes color change with a hysteresis width (ΔH) of 8 to 100°C in a color density-temperature curve, wherein a complete coloring temperature t1 is equal to or lower than -30°C, and a complete decolorizing temperature t4 is in a range of -25 to 15°C.SELECTED DRAWING: None

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, L2, L3, L4, M, m and n are as defined herein. Methods associated with preparation and use of such compounds are also provided.

Hydrocarbon enhanced ionophore-based ion-selective optodes (ISOs) and methods of their use are provided. The ISOs exhibit improved ultrasensitive ion sensing due to the addition of ultralow-polarity hydrocarbons to the sensing phase using specific ratios of sensing phase components. The ISOs can be operated under an exhaustive or non-exhaustive extraction response mode.

The present invention relates to a non-fluorescent compound that is useful as a quencher for a fluorescent compound exhibiting emission properties at an excited energy level, and to various applications thereof.

The purpose of the present invention is to provide: a photochromic compound having excellent temperature dependence and fading speed; a phenol derivative that can be used as an intermediate of the photochromic compound; a curable composition containing the photochromic compound; an optical article; 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. Ring A is a substituted or unsubstituted aromatic ring, a substituted or unsubstituted aromatic heterocyclic ring, or a substituted or unsubstituted fused polyring in which an aromatic ring or an aromatic heterocyclic ring is fused to these rings. Z1 represents a group represented by formula (1a) or a group represented by formula (1b).

The present application relates to a kind of fluorine-containing fluorane compound, light-resistant thermosensitive dye and preparation method and application, belong to fine chemical technology field, solve the problem of insufficient light resistance of existing thermosensitive dye heat-sensitive material.The fluorane compound of the present application contains fluorine in molecular structure.Preparation method includes the following steps: step 1: 2-(2-hydroxy-4-diethylaminobenzoyl) benzoic acid, 3,5-bistrifluoromethylphenol and mixed strong acid are added to reaction vessel, condensation reaction occurs;Step 2: cooling, organic solvent is added to the reaction system, then slowly add alkaline solution, heating reflux stirring, ring-closing reaction occurs, to obtain reaction liquid;Step 3: the reaction liquid is separated, to obtain organic phase, water washing to neutral, separation, collect the organic phase of neutral, remove organic solvent by distillation under reduced pressure, dry, to obtain fluorine-containing fluorane compound solid.

Provided are an additive composition for lubricating oil and a method for using the same. 【Solution means】 The present invention relates to (A) a (per)fluoropolyether polymer [PFPE polymer add having a first chain end and a second chain end respectively bonded to both ends of a (per)fluoropolyether chain [PFPE chain add , wherein at least one (per)fluoropolyether polymer [PFPE polymer add contains a first chain end having a group of the formula -C(O)NR a R b (wherein R a and R b are each independently selected from hydrogen, a linear or branched C1-C6 alkyl group), and the second chain end is a C1-C6 (per)fluoroalkyl group, -CF2C(O)CF3, and -C(OH)2CF3, -C(O)NR a R b (wherein R a and R b are each independently selected from hydrogen, a linear or branched C1-C6 alkyl group), -C(O)OR c (wherein R c is a linear or branched C1-C6 alkyl group), and relates to an additive composition containing at least one (per)fluoropolyether polymer [PFPE polymer add ; and (B) a fluorescent dye of the formula (I) (e.g., a rhodamine dye) in an amount of 0.01 to 25.0% by weight based on the weight of component (A). The present invention also relates to the use of the additive composition in a mixture with a hydrogenated or fluorinated lubricating oil. This additive composition can impart both rust prevention properties and fluorescent properties to the lubricating oil.

The present disclosure provides methods for identifying a hydrocarbon fuel, such as the presence and / or amounts of marker compounds having a fluorescence intensity and, through correlation, the presence and / or amounts of additive package(s) within the hydrocarbon fuel.

The present invention discloses the preparation and application of a light-resistant fluoran-type color-changing dye, belonging to the field of fine chemical technology. The present invention optimizes the structure of commercial fluoran dyes to provide a method for preparing a full-color spectrum fluoran dye with excellent light resistance. While maintaining the color development, color change sensitivity, and color change fatigue resistance of the dye, the light resistance is improved, with the light resistance time increased by 8-28 hours, an increase of 50%-80%. This solves the main problem of the application of such temperature-sensitive materials in the field of functional textiles, expands the application field, and is beneficial to economic benefits.

This specification provides biotechnology reagents containing poloxamer excipients. In particular, haloalkane-conjugated fluorophores are provided in solutions or lyophilized formulations containing poloxamer, enabling storage, accurate distribution / measurement, reconstitution, and addition to complex biological samples without the need for organic solvents.

A composition includes a functionalized fluorescent dye. The functionalized fluorescent dye includes an isothiocyanate-containing dye functionalized with a functional group. The functional group includes an aromatic compound with a primary amine. The functionalized fluorescent dye can be mixed with a fluid to form a tracer fluid for tracing fluid flow in a subterranean formation.

The invention relates to improved methods for using fluorescence-based probes which are optimized to have a quasilinear response in the pH range which is physiologically relevant for mitochondria to measure mitochondrial pH, various mitochondrial metabolism parameters, and drug efflux capacity. These probes can be 5 used to measure the functional parameters of mitochondria of any cell type, based on the measurement of mitochondrial pH and its changes upon various mitochondrial metabolism stimuli and inhibitions.

This invention relates to non-fluorescent compounds useful as quenchers for fluorescent compounds that exhibit luminescence properties at excitation energy levels, and to various applications thereof.

The photochromic cyclic compound of the present invention is represented by Formula (1) below:in the formula, L is a divalent bridging group and PC is a divalent T-type photochromic basic structural group having a naphthopyran structure, where one end of the bridging group L is bonded to at least the 3-position of the naphthopyran structure.

The purpose of the present disclosure is to provide: a photochromic compound having excellent temperature dependency and an excellent color fading rate; a phenol derivative that can be an intermediate for the photochromic compound; and a curable composition, an optical article, a lens, and an eyeglass, each containing the photochromic compound. An embodiment of the present invention provides a photochromic compound having a backbone represented by formula (1). In formula (1), M represents C, Si, or Ge. Ring A is a substituted or unsubstituted aromatic ring, a substituted or unsubstituted aromatic heterocyclic ring, or a substituted or unsubstituted condensed polycyclic ring obtained through fusing, to either of said rings, an aromatic ring or an aromatic heterocyclic ring. Z1 represents a group represented by formula (1a) or a group represented by formula (1b).

A latent additive represented by general formula (1): wherein A is a 5- or 6-membered aromatic or heterocyclic ring; R1 and R2 are each hydrogen, halogen, cyano, hydroxyl, nitro, carboxyl, optionally substituted C1-C40 alkyl, C6-C20 aryl, C7-C20 arylalkyl, or C2-C20 heterocyclic ring-containing group; and R4 is C1-C20 alkyl, C2-C20 alkenyl, C6-C20 aryl, C7-C20 arylalkyl, C2-C20 heterocyclic ring-containing group, or trialkylsilyl.