Electrowetting element including a compound comprising a plurality of colorant moieties and a linker. The plurality of colorant moieties includes a first colorant moiety having a first net dipole and a second colorant moiety having a second net dipole. The plurality of colorant moieties are linked by and disposed around the linker so that the first net dipole and the second net dipole at least partially cancel each other.

Multimeric protected fluorescent reagents and their methods of synthesis are provided. The reagents are useful in various fluorescence-based analytical methods, including the analysis of highly multiplexed optical reactions in large numbers at high densities, such as single molecule real time nucleic acid sequencing reactions. The reagents contain fluorescent dye elements, that allow the compounds to be detected with high sensitivity at desirable wavelengths, binding elements, that allow the compounds to be recognized specifically by target biomolecules, and protective shield elements, that decrease undesirable contacts between the fluorescent dye elements and the bound target biomolecules and that therefore decrease photodamage of the bound target biomolecules by the fluorescent dye elements. The reagents also contain coupling elements connect monomeric compounds into multimeric forms, thereby increasing brightness.

The invention provides a novel class of cyanine dyes that are functionalized with sulfonic acid groups and a linker moiety that facilitates their conjugation to other species and substituent groups which increase the water-solubility, and optimize the optical properties of the dyes. Also provided are conjugates of the dyes, methods of using the dyes and their conjugates and kits including the dyes and their conjugates.

The present disclosure relates to new compounds and their use as fluorescent labels. The compounds may be used as fluorescent labels for nucleotides in nucleic acid sequencing applications.

The present disclosure discloses a dye for industrialization of dyeing cotton fiber in supercritical carbon dioxide that can react with cotton fiber, wherein a preparation method therefor comprises the following steps: dissolving a hydroxyl-containing natural dye in an organic solvent, dropwise adding an alcohol compound containing a halogen group into a reaction system in the presence of an acid-binding agent, precipitating the product with another solvent after the reaction is completed, and then filtrating and drying to obtain the compound described. The obtained compound is used for dyeing cotton fiber in supercritical carbon dioxide. The dye provided by the present disclosure is capable of dyeing cotton fiber in supercritical carbon dioxide conditions, and has a better color fastness while dyeing the cotton fiber.

To provide an optical filter having shielding effects against near ultraviolet rays and near infrared rays. An optical filter comprising a transparent resin body having a single layer or multilayer structure, and containing a near ultraviolet absorbing dye (U) which is a compound represented by the following formula (U) and which has an absorption maximum at a wavelength of from 370 to 425 nm and has a molar absorptivity at the maximum absorption wavelength of at least 50,000 [L/(mol.Math.cm)], and a near infrared absorbing dye (A) which has an absorption maximum at a wavelength of from 600 to 800 nm:

##STR00001##

In the formula (U), Y is an oxygen atom, a methylene group or a dimethylene group, R.sup.1 is a monovalent hydrocarbon group which may have a substituent, or the like, R.sup.2 to R.sup.5 are a hydrogen atom, an alkyl group, an alkoxy group or the like, and X is a bivalent group represented by any one of the formulae (X1) to (X5) or the like.

An optical filter includes an absorption layer containing a near-infrared absorbing dye with an absorption characteristic in dichloromethane satisfying (i-1) to (i-3). (i-1) In an absorption spectrum of a wavelength of 400 to 800 nm, there is a maximum absorption wavelength .sub.max in 670 to 730 nm. (i-2) Between a maximum absorption coefficient .sub.A of light with a wavelength of 430 to 550 nm and a maximum absorption coefficient .sub.B of light with a wavelength of 670 to 730 nm, the following relational expression: .sub.B/.sub.A65 is established. (i-3) In a spectral transmittance curve, the difference between a wavelength .sub.80 with which the transmittance becomes 80% on a shorter wavelength side than the maximum absorption wavelength with the transmittance at the maximum absorption wavelength .sub.max set to 10% and the maximum absorption wavelength .sub.max is 65 nm or less.

The present invention relates to: an active ray-curable inkjet ink which has high gloss and is capable of forming an image that is suppressed in gloss difference between itself and a base; and an image forming method which uses this active ray-curable inkjet ink. An active ray-curable inkjet ink according to the present invention contains a photopolymerizable compound, a photoinitiator and a crystalline gelling agent, and is capable of undergoing a sol-gel phase transition. This active ray-curable inkjet ink is characterized by additionally containing a fluorescent bleaching agent.

A compound for an organic photoelectric device includes at least one of a compound represented by Chemical Formula 1, a compound represented by Chemical Formula 2 and a combination thereof.

To provide an optical filter having shielding effects against near ultraviolet rays and near infrared rays. An optical filter comprising a transparent resin body having a single layer or multilayer structure, and containing a near ultraviolet absorbing dye (U) which is a compound represented by the following formula (U) and which has an absorption maximum at a wavelength of from 370 to 425 nm and has a molar absorptivity at the maximum absorption wavelength of at least 50,000 [L/(mol.Math.cm)], and a near infrared absorbing dye (A) which has an absorption maximum at a wavelength of from 600 to 800 nm: ##STR00001##
In the formula (U), Y is an oxygen atom, a methylene group or a dimethylene group, R.sup.1 is a monovalent hydrocarbon group which may have a substituent, or the like, R.sup.2 to R.sup.5 are a hydrogen atom, an alkyl group, an alkoxy group or the like, and X is a bivalent group represented by any one of the formulae (X1) to (X5) or the like.