The present disclosure relates to polymers which contain a hydrophobic and hydrophilic segment which is sensitive to pH. In some aspects, the polymers form a micelle which is sensitive to pH and results in a change in fluorescence based upon the particular pH. In some aspects, the disclosure also provides methods of using the polymers for the imaging of cellular or extracellular environment or delivering a drug.

The present invention provides a post-fabrication modification approach for the fabrication of colored and chromic materials and sensors using plasma surface modification to covalently bind the coloring agent to the substrate, thus avoiding leaching of the dye. Advantageously, in said methods, said coloring agent is a dye or pigment linked to a radical sensitive functional group, such as an alkenyl or alkynyl functional group, and is applied to the substrate prior to the gas plasma treatment. The methods envisaged herein are generic in nature, which allow the covalent immobilization of various dyes on different materials. The covalently coated materials after plasma surface modification, particularly the covalently coated chromic materials and sensors, can be used in many different applications, such as protective textile and wound dressing applications.

The present invention provides a post-fabrication modification approach for the fabrication of colored and chromic materials and sensors using plasma surface modification to covalently bind the coloring agent to the substrate, thus avoiding leaching of the dye. Advantageously, in said methods, said coloring agent is a dye or pigment linked to a radical sensitive functional group, such as an alkenyl or alkynyl functional group, and is applied to the substrate prior to the gas plasma treatment. The methods envisaged herein are generic in nature, which allow the covalent immobilization of various dyes on different materials. The covalently coated materials after plasma surface modification, particularly the covalently coated chromic materials and sensors, can be used in many different applications, such as protective textile and wound dressing applications.

Antimicrobial azo compounds include azobenzene monomers having a phenyl ring comprising a hydroxyl substituent group. The azobenzene monomers can be reacted with a polymeric material to form an antimicrobial coating that prevents growth of persistent biofilms. In some implementations, the azobenzene monomers can be used to coat the surface of a dental resin-based composite to prevent the formation secondary caries. In some implementations, the azobenzene coating can be used to disperse microbial biofilms through a photofluidization process (rapid photoisomerization) in addition to biochemically preventing formation of the microbial biofilm.

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).

Compounds useful as fluorescent or colored dyes are disclosed. The compounds have the structure (I) 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.1a, L.sup.1b, L.sup.2, L.sup.3, L.sup.4, L.sup.5, L.sup.6, L.sup.7, M.sup.1, M.sup.2, q, w, m and n are as defined herein. Methods associated with preparation and use of such compounds are also provided.

The present disclosure relates to polymers which contain a hydrophobic and hydrophilic segment which is sensitive to pH. In some aspects, the polymers form a micelle which is sensitive to pH and results in a change in fluorescence based upon the particular pH. In some aspects, the disclosure also provides methods of using the polymers for the imaging of cellular or extracellular environment or delivering a drug.

Dimeric and/or polymeric dyes and compounds and methods for preparation of the same are disclosed.

There is provided a resin-treated pigment that is useful as a coloring agent for color filters or inkjet inks, that can expand a hue range and improve performances such as color density, color developability, and transparency, and that is excellent in properties such as dispersibility and dispersion stability of pigments, re-dissolvability, and alkali-solubility. An A-B block copolymer 90% by mass or more of which is constituted by a methacrylate-based monomer or methacrylate-based monomers, in which the block A has a carboxy group-containing methacrylate as a constituent, and the block B has an ionic bond moiety represented by formula (1) as a constitutional unit, the ionic bond moiety containing a methacrylate, and an organic coloring matter having one or more sulfonate ions each being bonded thereto and each being a counter ion of a nitrogen cation of a quaternary ammonium salt. ##STR00001##

A polymer dye includes at least one repeating unit represented by the following structural formula 1 and at least one selected from the group consisting of repeating units represented by the following structural formulas 2 and 3.

##STR00001##

Hydrogen peroxide present in or generated through enzymatic reaction in a biological sample can be detected by using the polymer dye.