Abstract: A solar thermal fuel can include a plurality of photoswitchable moieties associated with a nanomaterial. The plurality of photoswitchable moieties can be densely arranged on the nanomaterial, such that adjacent photoswitchable moieties interact with one another. The solar thermal fuel can provide high volumetric energy density.

Abstract: Disclosed is a pigment composition comprising a metal complex of azo compound of formula 1 containing at least one pyrimidine or a pyrimidine derivative. The pigment composition exhibits improved color characteristics, improved stability and easy dispersion.

Abstract: Disclosed herein are solubility changeable dye compositions, methods of preparing such compositions and methods of using them. The composition includes a dye component linked via a linker moiety to a stimulus responsive hydrophobic moiety which modulates the solubility of the dye, wherein the hydrophobic moiety is configured to be de-linked from the dye component on exposure to a stimulus and render the dye component more hydrophilic.

Abstract: The invention relates to pyrimidines suitable as substrates for O6-alkylguanine-DNA alkyltransferases (AGT) of formula (I) wherein R1 is hydrogen, lower alkyl, halogen, cyano, trifluoromethyl or azido; R2 is a linker; and L is a label or a plurality of same or different labels. The invention further relates to methods of transferring a label from pyrimidines of formula (I) to O6-alkylguanine-DNA alkyltransferases (AGT) and AGT fusion proteins.

Abstract: An azo dye represented by the following formula (I): wherein, in formula (I), R1, R2, R3, and R4 each independently represent a hydrogen atom, an aliphatic group, an aryl group, a halogen atom, an acyl group, a cyano group, an acylamino group, an aliphatic oxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, an aliphatic sulfonyl group, an arylsulfonyl group, a sulfamoyl group, an aliphatic oxycarbonylamino group, an aryloxycarbonylamino group, a sulfo group, a carboxyl group, a carbamoylamino group, a sulfamoylamino group, or an aliphatic- or aromatic-sulfonylamino group, wherein R1 and R2 and/or R3 and R4 may be combined with each other to form a five- or six-membered aromatic ring or non-aromatic ring; X represents a carbon atom or a nitrogen atom, wherein n is 0 when X is a nitrogen atom and n is 1 when X is a carbon atom; A, B, C, and D each represent a carbon atom or a nitrogen atom, provided that at least one of A, B, C and D represents a nitrogen atom; Y represents a substituent; and

Abstract: Provided is an azo pigment having excellent coloring characteristics such as high tinctorial strength and hue and having excellent durability such as high resistance to light and ozone, a pigment dispersion containing the azo pigment, and a coloring composition.

Abstract: An azo pigment showing excellent coloring characteristics such as tinctorial strength and hue and excellent fastness such as light fastness, and a pigment dispersion containing the azo pigment are provided. An azo pigment represented by the following general formula (1) and a pigment dispersion containing the pigment: wherein G represents an aliphatic group, an aryl group, or a heterocyclic group, Y represents a hydrogen atom or an aliphatic group, R1 represents an aliphatic group, an aliphatic amino group, an arylamino group, a heterocyclic amino group, an acylamino group, a sulfonamido group, an amino group, or a heterocyclic group, R2 and R3 each independently represents an aliphatic amino group, an arylamino group, a heterocyclic amino group, an acylamino group, a sulfonamido group, an amino group, or a heterocyclic group, X1 represents a nitrogen atom or C—Z, Z represents an electron-withdrawing group having a Hammett ?p value of 0.

Abstract: An ink includes at least one coloring matter represented by a formula (1): wherein X1 represents one of —CR1? and a nitrogen atom; X2 represents one of —CR2? and a nitrogen atom; X3 represents one of —CR3? and a nitrogen atom; R1, R2 and R3 each independently represents one of a hydrogen atom and a substituent; when R1, R2 and R3 each represents a substituent, the substituent may have a substituent; A represents one group selected from a prescribed pyridine ring group, pyrimidine ring group and quinoline ring group.

Abstract: A dye composition, which comprising: (a) a mono azo dye of the formula (I) wherein R, R1, K, Y and m are defined the same as the specification; and (b)at least one azo dye selected from the group consisting of the following formula (II), (III) and (IV), wherein R, R2, R3, Y, (W)0˜3, (W?)0˜3, D, D1 and D2 are defined the same as the specification. These kinds of dye composition with good stability and build-up. The dye composition are suitable for dyeing and printing of materials containing either cellulose fibers, such as cotton, artificial cotton, linen, and artificial linen, or synthetic polyamide, such as wool, silk, and nylon etc. Dyed materials with excellent properties can be obtained, showing especially outstanding performance in of wash-off, built-up, level-dyeing, photochromism, wet-fastnes, ghosting fastness and light fastness.

Abstract: A dye represented by the following formula (1-1), a colored curable composition using the same, and a colored curable composition including a dye represented by the following formula (1) and at least one dye represented by the following formula (2) or (3): wherein Ra1 is an aliphatic group, an aryl group, a heterocyclic group, an acyl group or the like; Xa1 is —CRa3? or N; Ra2 and Ra3 are each H or a substituent; B is a coupler residue; A is a residue of a 5-membered heterocyclic diazo component A-NH2; B1 and B2 is —CR1?, —CR2? or N; R5 and R6 is H, an aliphatic group, an aromatic group, a heterocyclic group or the like; G, R1 and R2 is H, halogen, an aliphatic group, an aromatic group, a heterocyclic group, a cyano group, a carboxyl group, a carbamoyl group, an alkoxycarbonyl group or the like; Rd1 to Rd4 is H or an aliphatic group; Rd5 is a sulfo group or a sulfamoyl group; Rd6 to Rd10 is a substituent; m, n, p and q=0 to 3; r=0 to 4.

Abstract: The high-nitrogen compound 3,6-di(azido)-1,2,4,5-tetrazine (DiAT) was synthesized by a relatively simple method and used as a precursor for the preparation of carbon nanospheres and nanopolygons, and nitrogen-rich carbon nitrides.

Abstract: The present invention includes methods, articles, compositions and colorant dyes and pigments that include biocidal N-halamine dye composition having two or more heterocyclic ring structures attached to one or more N-halamine groups, wherein one or more halogens associate with the one or more one or more N-halamine groups to affect biocidal activity.

Abstract: The application relates to 4?-substituted nucleoside derivatives of Formula I: wherein B and R1 have any of the values described in the application, as well as to compositions comprising such compounds, to methods and intermediates useful for preparing such compounds, and to therapeutic methods comprising administering such compounds to animals in need thereof.

Abstract: A compound of Formula (1) or a salt thereof: wherein: A is optionally substituted aryl or optionally substituted heterocyclyl; and R1 and R2 are independently H or a substituent. Also metal chelates, compositions, inks, printing processes, printed material and ink-jet cartridges.

Abstract: A compound possesses the chemical structure of: wherein n is greater than zero. The compound is useful in energetic composition, particularly in linear, branched, dendritric, oligomer and cyclic oligomer azo-triazine forms.

Abstract: The present invention relates to novel yellow anionic dyes, a process for their preparation, certain novel intermediates for their preparation and the use of these dyes for dyeing natural or synthetic materials, in particular, paper.

Abstract: The high-nitrogen compound of the formula was prepared. Pyrolysis of the compound yields carbon nitrides C2N3 and C3N5. The carbon nitrides vary in their density, texture, and morphology.

Abstract: A color-developing agent of the formula (1-1): wherein X represents a hydrogen atom or a substituent, and Z represents a carbamoyl, acyl, alkoxycarbonyl, or aryloxycarbonyl group. An azo dye of the formula (2-1): wherein R1 represents a hydrogen atom or a substituent, and A represents a group of atoms necessary to form the azo dye by the compound of formula (2-1). A silver halide photographic light-sensitive material containing any of the color-developing agent and the azo dye in at least one photographic constitutional layer.

Abstract: Dyes of formula (1) or (2) wherein R1, R1′, R2 and R2′ are each independently of the others hydrogen, C1-C4alkyl, halogen or nitro, R3, R3′, R4 and R4′ are each independently of the others C1-C4alkyl unsubstituted or substituted by OH, C1-C4alkoxy, halogen, CN or phenyl, R5 is hydrogen or C1-C4alkyl, R6 is unsubstituted or amino-substituted C5-C12alkyl; or unsubstituted or amino-substituted C5-C8cycloalkyl; or phenyl-substituted C1-C4alkyl; or wherein R5 and R6 together with the nitrogen atom linking them from a piperazine ring, which is substituted, at the nitrogen atom that is not bonded to the phenyl group, by C1-C4-alkyl or phenyl, the alkyl and phenyl radicals mentioned as substituents of the nitrogen atom of the piperazine ring being unsubstituted or substituted by amino, X1, X2, X3 and X4 are each independently of the others hydrogen, C1-C4alkyl, C1-C4alkoxy or halogen, Y1 is a bridging member of formula (1) or —NH—(CH2)6—NH—, and X− is an anion, as

Abstract: &bgr;-lactamases are the most widespread resistance mechanism to &bgr;-lactam antibiotics, such as penicillins and cephalosporins. In response to these enzymes, inhibitors have been introduced. Unfortunately, these inhibitors are also &bgr;-lactams, and resistance to them has developed rapidly. Consequently, the present invention provides a novel structure-based approach to inhibitors of these enzymes.

Abstract: According to the invention there are provided fiber-reactive dyestuffs which are compounds of the formula (I) 1

Abstract: An ink composition for inkjet recording comprising: an azo dye having an aromatic nitrogen-containing 6-membered heterocycle as a coupling component; an aqueous medium; and a surfactant, wherein the azo dye is dissolved or dispersed in the aqueous medium.

Abstract: The present invention relates to a pyrimidine compound (I) useful as a pharmaceutical intermediate, to a process for preparing said pyrimidine compound, to intermediates used in said process, and to the use of said pyrimidine compound in the preparation of pharmaceuticals.

Abstract: Compounds of the formula

Abstract: This invention concerns the use of the compounds of formula 1

Abstract: The compound of the structure where a, b, c, d and e are 0 or 1 and a+b+c+d+e is from 0 to 5 is disclosed together with the species 3,3′-azobis(6-amino-1,2,4,5-tetrazine) and a process of preparing such compounds.

Abstract: Mono- or dipotassium salts of azo compounds conforming to the formula (I) or one of its tautomeric structures where R and R′ are independently OH, NH2, NH—CN, acylamino or arylamino and R1 and R1′are independently —OH or —NH2, and also their hydrates.

Abstract: A process for the preparation of dihydroxypyrimidine derivatives of the general formula: in which R1 and R2 are identical or different and are a hydrogen atom, aryl group, or a C1-C4-alkyl group or an aryl group, starting from a compound of the general formula: in which R2 has the meaning mentioned above and R3 is —CN or COOR4, in which R4 is a C1-C4-alkyl group.

Abstract: A monoester compound of formula I:Nu--O--Fawherein O is oxygen, Nu is a nucleoside analog, Fa is an acyl group of a mono-unsaturated C18 or C20 omega-9 fatty acid, which fatty acid is esterified with a hydroxyl group in the 5'-position of the sugar moiety of the nucleoside analog or with a terminal hydroxyl group on the non-cyclic group of the nucleoside analog, and wherein Nu is represented by the formula II:B--Swherein S is a mono-saccharide derivative and B is a heterocyclic ring system.

Abstract: Compound of the general formula (I) ##STR1## in which X is an O or S atom or an imino group,Y is an O atom or an imino group,R.sub.1 and R.sub.2 are a hydrogen atom, C.sub.1 -C.sub.4 -alkyl, an unsubstituted phenyl group or a substituted phenyl group having 1 to 5 substituents from the group consisting of C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, halogen, nitro, cyano, hydroxyl, CF.sub.3, CONH.sub.2, CONH(C.sub.5 -C.sub.6 -cycloalkyl), CON(C.sub.1 -C.sub.4 -alkyl).sub.2, CONH(C.sub.1 -C.sub.4)-alkyl, COO(C.sub.1 -C.sub.4)-alkyl, COO(C.sub.5 -C.sub.6 -cycloalkyl) and CONH(phenyl), with the proviso that at least one of the radicals R.sub.1 or R.sub.2 has one of the meanings mentioned which differ from hydrogen,R.sub.3 is a hydrogen atom, a trifluoromethyl group, a halogen atom or a C.sub.1 -C.sub.4 -alkyl, a C.sub.1 -C.sub.4 -alkoxy, a nitro or a cyano group andR.sub.4 and R.sub.5 independently of one another are a hydrogen atom, C.sub.1 -C.sub.

Abstract: Disclosed are arylazo chromoionophores characterized by the formula: ##STR1## wherein X is hydrogen or a monovalent cation, Y is H or methoxy and R is a ringed aromatic organic structure which affects the optical absorption properties of the compounds. Also disclosed is a method for the detection of calcium ion using these compounds.

Abstract: A diagnostic test for environmental bacillus which comprises the steps of inoculating an agar growth medium comprising a nitrate source, luminol and 3-amino-L-tyrosine (3AT) with the sample, incubating the inoculated medium and determining the presence of the bacillus. The novel medium preferably comprises potassium nitrate, luminol, 3-amino-L-tyrosine and trypticase soy agar. Antibiotics and/or a specific bacteriophage may be added to the medium surface in localized areas to show specific bacterial lysis for identification. The novel medium and the methods of this invention are suitable for the identification of B. anthracis.

Abstract: A water-soluble luminescent compound having repeating units of the formula: ##STR1## The product, which is a polymer having repeating units comprising diazo-linked luminol and hydroxyindole, is referred to as diazoluminomelanin (DALM), since one of the precursors to this product, 3-amino-L-tyrosine (3AT) is closely related to the biological substrates which are converted into melanin.Also provided is a method for preparing DALM which comprises reacting 3AT with an alkali metal nitrite, and reacting the resulting diazonium salt with luminol.DALM can be used for chemiluminescent immunoassays for biological and chemical agents; in radiofrequency and ionizing radiation dosimeters; and for RNA/DNA hybridization assays for viruses and genetic detection.

Abstract: Compounds of the formula I ##STR1## where X is fluorine, chlorine, bromine, SO.sub.2 E or unsubstituted or substituted hydroxyl or mercapto, E is alkyl, alkenyl, cycloalkyl, aralkyl, aryl, chlorine or unsubstituted or substituted hydroxyl or amino, Y is cyano, nitro, alkanoyl, aroyl, alkylsulfonyl, arylsulfonyl, carboxyl, a carboxylic ester group or unsubstituted or substituted carbamyl, T is hydrogen, C.sub.1 -C.sub.4 -alkyl, a radical which can be introduced by electrophilic substitution or a radical of the formula --CH.dbd.B, in which B is a radical of a methylene-active compound or of an amine, and K is a radical of a coupling component, are disclosed. They are useful for dyeing synthetic fibers or plastics.

Abstract: Preparation of diazo compounds by transfer of diazo groups to activated methylene compounds, characterized in that an azidoformamidinium salt is used as the diazo group transferring agent, and also preparation of azo compounds by this route.

Abstract: Azobarbituric acid derivatives characterized in that in their free acid form they have the following tautomeric structure are disclosed: ##STR1## The azobarbituric acid derivatives are characterized in that X and Y rings can each carry one or two substituents from the series comprising .dbd.O, .dbd.S, .dbd.NR.sub.7, --NR.sub.6 R.sub.7, --OR.sub.6, --SR.sub.6, --COOR.sub.6, --CN, --CONR.sub.6 R.sub.7, --SO.sub.2 R.sub.8, ##STR2## alkyl, cycloalkyl, aryl and aralkyl, the total number of the endocyclic and exocyclic double bonds for each of the rings X and Y being three.The new azobarbituric acid derivatives are other than those of azobarbituric acid, azouracil and uracil-5-azobarbituric acid and their salts. The compounds are useful as pigments which pigments are useful for pigmented paints, in printing inks, distempers or emulsion paints, inter alia.

Abstract: 1:1 and 1:2 metal complexes comprising the unit of the formula ##STR1## wherein A and B, independently, are radicals of diazo or coupling components, with the proviso that when one of A and B is a radical of a diazo component, the other is a radical of a coupling component,T is --SO.sub.2 N(R.sub.1)-- or --N(R.sub.1)SO.sub.2 --, wherein R.sub.1 is hydrogen, C.sub.1-4 alkyl, C.sub.1-4 alkyl substituted by phenyl or carboxy or C.sub.2-4 alkyl substituted in the .beta.--, .gamma.-- or .delta.--position by phenoxy, C.sub.1-4 alkyl, chloro or hydroxy, with the proviso that T is --N(R.sub.1)SO.sub.2 -- when A is the radical of a diazo component and T is --SO.sub.2 N(R.sub.

Abstract: New inclusion compound, intercalation compounds or solid solutions which are the nickel salts or nickel complexes of a compound which, in one of its tauteromeric structures, corresponds to the formula ##STR1## which contain at least one other included compound, except for one composition of matter which consists of 45 to 82% by weight of azobarbituric acid/nickel 1:1 complex, 3 to 15% by weight of benzene-sulphonamide, 5 to 20% by weight of nickel acetate and 10 to 20% by weight of water and the use of these materials as pigments are disclosed.

Abstract: A compound of the formula: ##STR1## where R is hydrogen, C.sub.1 -C.sub.4 -alkyl, phenyl, chlorophenyl, methylphenyl, methoxyphenyl or nitrophenyl; R.sup.1 is allyl, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkyl substituted by C.sub.1 -C.sub.8 -alkoxy, phenoxy, phenyl or C.sub.1 -C.sub.8 -alkanoyloxy, cyclopentyl, cyclohexyl, methylcyclohexyl, norbornyl, phenyl or phenyl substituted by chlorine, methyl or alkoxy; R.sup.2 is C.sub.1 -C.sub.10 -alkanoyl, C.sub.1 -C.sub.10 -alkanoyl substituted by alkoxy or phenoxy, cyclohexanoyl, benzoyl, benzoyl substituted by chlorine, methyl or methoxy, C.sub.1 -C.sub.8 -alkoxycarbonyl, aminocarbonyl, phenylaminocarbonyl, CH.sub.3 NHCO, C.sub.2 H.sub.5 NHCO, C.sub.3 H.sub.7 NHCO, C.sub.4 H.sub.9 NHCO, (CH.sub.3).sub.2 NCO, CH.sub.3 SO.sub.2, C.sub.6 H.sub.5 SO.sub.2 or p--CH.sub.3 --C.sub.6 H.sub.4 --SO.sub.2 ; or R.sup.1 and R.sup.2, together with the nitrogen atom, form a ring system, and K is a radical of a coupling component.

Abstract: Coordination complexes of a polyvalent metal ion and a nondiffusible compound capable of releasing at least one diffusible cyan dye moiety having the formula: ##STR1## wherein: (a) Y represents the atoms necessary to complete a 5- or 6-membered aromatic heterocyclic fused ring;(b) CAR represents a ballasted carrier moiety capable of releasing the diffusible cyan dye moiety as a function of development of a silver halide emulsion layer under alkaline conditions;(c) R represents a hydroxy group, a salt thereof, or a hydrolyzable precursor thereof, or CAR which is linked to the dye moiety through an oxygen atom thereon; and(d) n is 0, 1 or 2 with the proviso that when n is 0, then R is CAR which is linked to the dye moiety through an oxygen atom thereon.

Abstract: Nondiffusible compounds capable of releasing at least one diffusible magenta dye moiety having the formula: ##STR1## wherein: (a) X represents the atoms necessary to complete a 5- or 6-membered heterocyclic ring;(b) Y represents the atoms necessary to complete a 5- or 6-membered heterocyclic fused ring;(c) CAR represents a ballasted carrier moiety capable of releasing the diffusible magenta dye moiety as a function of development of a silver halide emulsion layer under alkaline conditions;(d) R represents a hydroxy group, a salt thereof, or a hydrolyzable precursor thereof, or CAR which is linked to the dye moiety through an oxygen atom thereon; and(e) n is 0, 1 or 2, with the proviso that when n is 0, then R is CAR which is linked to the dye moiety through an oxygen atom thereon.

Abstract: Nondiffusible compounds capable of releasing at least one diffusible cyan dye moiety having the formula: ##STR1## wherein: (a) Y represents the atoms necessary to complete a 5- or 6-membered aromatic heterocyclic fused ring;(b) CAR represents a ballasted carrier moiety capable of releasing the diffusible cyan dye moiety as a function of development of a silver halide emulsion layer under alkaline conditions;(c) R represents a hydroxy group, a salt thereof, or a hydrolyzable precursor thereof, or CAR which is linked to the dye moiety through an oxygen atom thereon; and(d) n is 0, 1 or 2 with the proviso that when n is 0, then R is CAR which is linked to the dye moiety through an oxygen atom thereon.