US 6,020,175 A · Multiple layered functional thin films

Abstract

Multiple layered functional thin films fixed on a solid support are provided which comprise multiple layers of functional molecules (such as enzymes and other proteins, pigments and dyes) admixed with polymer ions in combination with multiple layers of polymer ions without the functional molecules. The films are prepared by immersing a solid support having an electric charge in an admixed polymer ion-functional molecule solution having a net electric charge opposite to that of the solid support followed by immersing the solid support in a polymer ion solution having a net electric charge opposite to that of the admixed polymer ion-functional molecule solution, and repeating at least once the immersings of the solid support in the solutions. Alternatively, the films are prepared by immersing the solid support in a polymer ion solution having a net electric charge opposite to that of the solid support followed by immersing the solid support in an admixed polymer ion-functional molecule solution having a net electric charge opposite to that of the polymer ion solution, and repeating at least once the immersings of the solid support in the solutions.

Claims24

Dependent claims

A method for producing a multiple layered functional thin film which comprises:

immersing a solid support having an electric charge in a solution containing a mixture of functional molecules that provide a desired function in a physical or chemical process and charged polymer molecules, different from the functional molecules, that form a matrix to fix the functional molecules, which solution of functional molecules and charged polymer molecules having a net electric charge opposite to that of the solid support, to form a layer containing said functional molecules and said charged polymer molecules;
immersing the solid support and said layer containing said functional molecules and said charged polymer molecules in a solution containing charged polymer molecules having a net electric charge opposite to that of said solution containing the mixture of charged polymer molecules and functional molecules;
and
repeating at least once said steps of immersing said solid support in a solution containing a mixture of charged polymer molecules and functional molecules and in a solution containing charged polymer molecules to form a desired multi-layered thin film.

1 more element

Dependencies are inferred from the claim text.

Multiple layered functional thin films

Life of this patent

Multiple layered functional thin films

Life of this patent

Abstract

Claims24