48results about "Benzoxanthene dyes" patented technology

This invention provides a nucleotide analogue comprising (i) a base selected from the group consisting of adenine, guanine, cytosine, thymine and uracil, (ii) a deoxyribose, (iii) an allyl moiety bound to the 3′-oxygen of the deoxyribose and (iv) a fluorophore bound to the base via an allyl linker, and methods of nucleic acid sequencing employing the nucleotide analogue.

The present invention relates to radiation curable ink containing fluorescent nanoparticles. Radiation curable compositions, such as UV curable ink compositions, contain a polymeric dispersant, a curable material, that includes a carrier and at least one nanoscale fluorescent pigment particle and an optional non-fluorescent colorant. The fluorescent organic nanoparticle composition includes one or more fluorescent dyes dispersed in a polymeric matrix obtained by modified EA latex process or by emulsion polymerization. In a different embodiment, the nanoscale fluorescent pigment particle composition includes pigment molecules with at least one functional moiety, and a sterically bulky stabilizer compound including at least one functional group, the functional moiety of the pigment associates non-covalently with the functional group of the stabilizer, and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized pigment particles.

Dye reagents useful in labeling biological materials are provided along with methods for their use.

Fluorescent functional dyes represented by the following formulas: wherein R1 is hydrogen or methyl; R2, R3, R4, R5, and R6 are each independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, aralkyl, alkaryl, halo, and trifluoromethyl; and L is a straight chain or branched chain alkylene containing 3 to about 15 carbon atoms, the alkylene group optionally containing one or more catenary heteroatoms.

Polycyclic aromatic hydrocarbon compounds having an S atom or S(═O)2 moiety incorporated in their basic polycyclic structure that can have a nitrogen-containing heterocycloaliphatic group and / or a substituted or unsubstituted phenoxy group and / or a polymeric moiety bonded to the polycyclic structure and to compositions such as, e.g., printing inks which comprise these polycyclic aromatic hydrocarbons as colorants.

An article that includes a fluorescent composition having at least one of a fluorescent sensor compound and organic reporter molecules encapsulated in a microsphere structure. When encapsulated, the fluorescent sensor compound and the organic reporter molecules are distributed in a liquid organic matrix. When non-encapsulated, the remaining one of the fluorescent sensor compound and the organic reporter molecules reside in the matrix. In response to a force applied to the composition sufficient to break at least a portion of the microsphere structure, the fluorescent sensor compound and the organic reporter molecules are transformed into a non-reversible fluorescent state exhibiting a quantum yield greater than 0.2. The fluorescent state is objectively visually verifiable without physically contacting the composition.

A durable colored article having fluorescent properties comprises a substantially solventless polyvinyl chloride matrix, a thioxanthene fluorescent dye, and a secondary or tertiary hindered amine light stabilizer having a molecular weight less than about 1000 grams / mole. The invention has the advantage in that it provides a flexible polyvinyl chloride film that exhibits durable fluorescent colors.

A durable colored article having fluorescent properties comprises a substantially solventless polyvinyl chloride matrix, a thioxanthene fluorescent dye, and a secondary or tertiary hindered amine light stabilizer having a molecular weight less than about 1000 grams / mole. The invention has the advantage in that it provides a flexible polyvinyl chloride film that exhibits durable fluorescent colors.

The invention relates to a colored photosensitive resin composition, characterized by containing a colorant of a xanthenes dye represented by a formula 1 and a compound represented by a formula 2.

The invention belongs to the technical field of fluorescence analysis, relates to a fluorescent dye containing a quaternary spiro structure, and a preparation method and application thereof, and concretely relates to a fluorescent dye containing an azetidine spiro structure, and a preparation method and application thereof. The fluorescent dye containing the azetidine spiro structure has a skeleton structure as shown in (I) or (II), and the fluorescent dye containing the azetidine spiro structure has excellent optical properties, good light stability and good biocompatibility. The invention further provides a novel azetidine spiro-structure-containing fluorescent dye with additional chemical connection sites, a preparation method thereof, and application of the novel azetidine spiro-structure-containing fluorescent dye in biological fluorescence analysis. The fluorescent molecule shows good water solubility, light stability and high fluorescence quantum yield, and can be used for fluorescence labeling, biological imaging and development of new fluorescent probes.

The invention discloses a novel near-infrared high-quantum-yield dye which has the following structural formula I shown as the original specification, wherein R1, R2, R6 and R7 are hydrogen, a low-level alkyl, an ether group and a substituted alkyl or acyl that are independent respectively; R3, R4, R5, R8, R9 and R10 are hydrogen, a low-level alkyl or halogen that are independent respectively; R11 is hydrogen, methyl, a cyano group or trifluoromethyl; X<theta> is a negative ion. The invention discloses a preparation method of the dye. The dye has good biocompatibility, low toxicity, longer fluorescence-emission and high fluorescence quantum yield, the autofluorescence of a background is avoided, a fluorescence image with high signal-to-noise ratio can be obtained, and the dye is used for fluorescence labeling for nucleolar RNA in a biological system and plays an important pole in a study process of physiology related to the nucleolar RNA.

A quencher is disclosed having a compound represented by the following general formula (1):wherein R5 each independently represent a halogen atom, an alkyl group, an alkoxy group, an alkylthio group, an amino group having a substituent or not having a substituent, a hydroxy group, an aryl group, an aryloxy group, or an arylalkyl group; R6 represents a group having a polymerizable unsaturated group, a hydroxy group, or the like; Y1 represents an oxygen atom, or the like; An− represents an anion; Ar1 represents a specific ring structure; * and ** represent binding positions; Ar2 represents a benzene ring, a naphthalene ring, or an anthracene ring; n1 represents a specific integer;and the following structure (1-10) in the general formula (1) is an asymmetric structure;(wherein R5, Y1, Ar1, Ar2, n1, * and ** are the same as described above.).