Described is an object surface coating comprising one or more polymers and a peptide covalently linked to at least one of said one or more polymers, said peptide comprising a) a first cleavage site, wherein said first cleavage site is cleaved by a first compound specifically provided by a microbe belonging to a first group consisting of a limited number of microbial strains, species or genera, and not cleaved by any compound provided by any microbe not belonging to said first group, b) a first fluorescent agent having an emission wavelength of 650-900 nm, c) a first non-fluorescent agent having an absorption wavelength of 650-900 nm, for quenching said emission of said first fluorescent agent, wherein cleavage of said first cleavage site results in the release of said first non-fluorescent agent from the coating, the release of said first non-fluorescent agent being indicative for the presence of a microbe belonging to said first group.

Described is an object surface coating comprising one or more polymers and a peptide covalently linked to at least one of said one or more polymers, said peptide comprising a) a first cleavage site, wherein said first cleavage site is cleaved by a first compound specifically provided by a microbe belonging to a first group consisting of a limited number of microbial strains, species or genera, and not cleaved by any compound provided by any microbe not belonging to said first group, b) a first fluorescent agent having an emission wavelength of 650-900 nm, c) a first non-fluorescent agent having an absorption wavelength of 650-900 nm, for quenching said emission of said first fluorescent agent, wherein cleavage of said first cleavage site results in the release of said first non-fluorescent agent from the coating, the release of said first non-fluorescent agent being indicative for the presence of a microbe belonging to said first group.

Carbon nanotubes or graphene combined with proteinaceous material forming compositions that can be coated on surfaces are described. For example, the described compositions can be used as a coating on an electrode. The coatings can be functionalized with capture agents, targeting specific analytes. In addition to being conductive, the coatings prevent fouling and passivation of the electrodes by non-specific binding. This allows the coated electrodes to be used in complex matrices such as can be found in biological fluids and tissues. The coated electrodes can be regenerated and reused repeatedly.

Carbon nanotubes or graphene combined with proteinaceous material forming compositions that can be coated on surfaces are described. For example, the described compositions can be used as a coating on an electrode. The coatings can be functionalized with capture agents, targeting specific analytes. In addition to being conductive, the coatings prevent fouling and passivation of the electrodes by non-specific binding. This allows the coated electrodes to be used in complex matrices such as can be found in biological fluids and tissues. The coated electrodes can be regenerated and reused repeatedly.

Described is an object surface coating comprising one or more polymers and a peptide covalently linked to at least one of said one or more polymers, said peptide comprising a) a first cleavage site, wherein said first cleavage site is cleaved by a first compound specifically provided by a microbe belonging to a first group consisting of a limited number of microbial strains, species or genera, and not cleaved by any compound provided by any microbe not belonging to said first group, b) a first fluorescent agent having an emission wavelength of 650-900 nm, c) a first non-fluorescent agent having an absorption wavelength of 650-900 nm, for quenching said emission of said first fluorescent agent, wherein cleavage of said first cleavage site results in the release of said first non-fluorescent agent from the coating, the release of said first non-fluorescent agent being indicative for the presence of a microbe belonging to said first group.

Described is an object surface coating comprising one or more polymers and a peptide covalently linked to at least one of said one or more polymers, said peptide comprising a) a first cleavage site, wherein said first cleavage site is cleaved by a first compound specifically provided by a microbe belonging to a first group consisting of a limited number of microbial strains, species or genera, and not cleaved by any compound provided by any microbe not belonging to said first group, b) a first fluorescent agent having an emission wavelength of 650-900 nm, c) a first non-fluorescent agent having an absorption wavelength of 650-900 nm, for quenching said emission of said first fluorescent agent, wherein cleavage of said first cleavage site results in the release of said first non-fluorescent agent from the coating, the release of said first non-fluorescent agent being indicative for the presence of a microbe belonging to said first group.

A coating for conversion of formaldehyde to carbon dioxide includes an alcohol/aldehyde oxidase and a formate oxidase immobilized on a solid particulate support; and a latex binder.

Bioactive coatings that are stabilized against inactivation by weathering are provided including a base including an enzyme associated therein, and a first polyoxyethylene present in the base and independent of the enzyme. The coatings are optionally overlayered onto a substrate to form an active coating facilitating the removal of organic stains or organic material from food, insects, or the environment.

Bioactive coatings that are stabilized against inactivation by weathering are provided including a base including an enzyme associated therein, and a first polyoxyethylene present in the base and independent of the enzyme. The coatings are optionally overlayered onto a substrate to form an active coating facilitating the removal of organic stains or organic material from food, insects, or the environment.

A method for coating a surface of a cell culture article includes dissolving a polymer having a covalently attached polypeptide in an aqueous solution to produce a polymer solution. The polymer is formed from monomers selected to form a polymer having a linear backbone, wherein the polymer is crosslink free. The weight percentage of the polypeptide relative to the polymer conjugated to the polypeptide is sufficiently high to render the polymer conjugated to the polypeptide water soluble. The aqueous solution is substantially free of organic solvents. The method further includes (i) disposing the polymer solution on the surface of the cell culture article to produce a coated article; and (ii) subjecting the coated article to sufficient heat or electromagnetic radiation to attach the polymer conjugated to a polypeptide to the surface of the cell culture article.