Polymers comprising first and second fluorescent or colored moieties on the polymer backbone and two or more charged moieties on the polymer backbone between the first and second colored or fluorescent moieties are provided. The polymers are useful as fluorescent or colored dyes. Methods associated with preparation and use of such polymers are also provided.

A leuco composition comprises at least one reactive leuco compound, which reactive leuco compound comprises a leuco moiety and at least one reactive moiety covalently bound to the leuco moiety. A laundry care composition comprises a laundry care ingredient and a leuco composition. A method of treating a textile comprises the steps of (i) treating a textile with an aqueous solution containing a leuco composition, (ii) optionally, rinsing the textile, and (iii) drying the textile.

Disclosed herein are compounds or salts and/or solvates of formula I, II and III, where the compounds or salts and/or solvates have the following structures: (X).sub.a—Y—(Z).sub.b I; II; or X′—Y′ III; where X, Y, Z, Y′, a, b, R.sub.4, R.sub.6 and R.sub.7 are as defined herein.

##STR00001##

Colorant of formula (I): ##STR00001##
wherein A signifies a monovalent organic residue comprising a chromophore group; B signifies a bivalent organic residue selected from the class consisting of aromatic, heteroaromatic, cycloaliphatic and aliphatic groups containing from 2 to 10 carbon atoms, optionally substituted; and C signifies the residue of compound comprising at least one amido group, one primary amino group, and one secondary amino group, wherein C is linked to B via a nitrogen atom of an amino group, wherein said compound is a poly(amidoamine).

Water soluble polymeric dyes and polymeric tandem dyes are provided. The polymeric dyes include a water solvated light harvesting multichromophore having a conjugated segment of aryl or heteroaryl co-monomers including branched non-ionic water soluble groups (WSG) comprising two or more water soluble polymers. In some cases, the branched non-ionic water soluble groups (WSG) of the present disclosure are capable of imparting solubility in water in excess of 50 mg/mL to the multichromophore. The polymeric tandem dyes further include a signaling chromophore covalently linked to the multichromophore in energy-receiving proximity therewith. Also provided are aggregation-resistant labelled specific binding members that include the subject water soluble polymeric dyes. Methods of evaluating a sample for the presence of a target analyte and methods of labelling a target molecule in which the subject polymeric dyes find use are also provided. Systems and kits for practicing the subject methods are also provided.

Compounds useful as fluorescent or colored dyes that enable visual detection of biomolecules and other analytes are disclosed. The compounds comprise a phenylethynylnapthalene moiety represented by the following structure (I): ##STR00001## including salts thereof, wherein R.sup.1a, R.sup.1b, R.sup.1c, R.sup.1d, R.sup.1e, R.sup.1f, R.sup.2a, R.sup.2b, R.sup.2c, R.sup.2d, R.sup.2e, R.sup.2f, R.sup.2g, R.sup.2h, R.sup.2i, R.sup.2j, x and y are as defined herein. Methods associated with preparation and use of such compounds for visually detecting a biomolecule are also provided.

Compounds useful as fluorescent or colored dyes are disclosed. In some embodiments, the compounds have the following structure (I):

##STR00001##

or a stereoisomer, tautomer or salt thereof, wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, L.sup.1, L.sup.2, L.sup.3, L.sup.4, M.sup.1, M.sup.2, m, and n are as defined herein. Methods associated with preparation and use of such compounds is also provided.

Compounds useful as fluorescent or colored dyes are disclosed. The compounds have the following structure (I):

##STR00001##

or a stereoisomer, tautomer or salt thereof, wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, L.sup.1, L.sup.2, L.sup.3, L.sup.4, M, m and n are as defined herein. Methods associated with preparation and use of such compounds are also provided.

Compounds useful as fluorescent or colored dyes are disclosed. The compounds have the following structure (I): ##STR00001##
or a stereoisomer, tautomer or salt thereof, wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, L.sup.1, L.sup.2, L.sup.3, L.sup.4, M, m and n are as defined herein. Methods associated with preparation and use of such compounds are also provided.

The present invention relates to a fluorescent polymer cast on the surface of wells of a plate and a plate comprising the fluorescent polymer. The plate is used in a method for calibrating read-out values of plate readers. The method for calibrating the plate readers can effectively reduce the deviation of read-out values among different plate readers.