Abstract:
A method for making a layered material can include providing a substrate having a surface with at least one region having a charge and forming layers by sequentially contacting the at least one region with a first solution and a second solution. The first solution comprises a first layering material in an ionic liquid and the second solution comprises a second layering material in a second ionic solution. The first and second layering materials can have a chemical affinity to each other. The first layering material and/or the second layering material can include polyelectrolytes, polymers, carbon nanotubes, or combinations thereof.
Abstract:
A process for preparing a solid electrolytic capacitor comprising application of a non-ionic polyol prior to application of a conducting polymer layer.
Abstract:
Mechanisms for coating surfaces of materials, the resulting coated materials, and solutions for use in material-coating processes are described. Triblock molecule components may be selected for desired properties. When applied in solution to a material, the molecules self-assemble into similarly oriented micro- or nanostructures coating the surface of the material. Various molecule properties can be tailored to produce a range of desirable surface coating properties. The surface coating may optionally be self cleaning if selected to be appropriately hydrophobic, allowing water and particulates to roll off of the surface with minimal friction.
Abstract:
The present invention relates to a process that is useful for surface functionalization of a substrate comprising at least one hydroxyl function, in which one or more point regions of said surface are brought into contact with an ionic liquid matrix containing at least one reactive molecule, as it is known, that carries at least one reactive function, under conditions that are suitable for the creation of a covalent bond between said reactive function of the molecule and a hydroxyl function of said surface.
Abstract:
The present invention relates to a method for preparing an organic film on the surface of a solid support including the steps consisting in (a) applying, to said surface, by transfer or by spraying, a solution containing at least one cleavable aryl salt; (b) subjecting said solution to a UV or visible irradiation, by means of which radical entities are formed from the cleavable aryl salt and an organic film is grafted. The present invention also relates to a kit of elements for the implementation of such a method.
Abstract:
The present invention provides a surface-independent surface-modifying multifunctional biocoating and methods of application thereof. The method comprises contacting at least a portion of a substrate with an alkaline solution comprising a surface-modifying agent (SMA) such as dopamine so as to modify the substrate surface to include at least one reactive moiety. In another version of the invention, a secondary reactive moiety is applied to the SMA-treated substrate to yield a surface-modified substrate having a specific functionality.
Abstract:
The method of applying a polyelectrolyte multilayer film for corrosion control involves chemical and/or electrochemical pretreatment of a metallic substrate for better adherence of the protective film to the substrate. The method includes anodically polarizing the substrate in a solution of an acid for a period from one second to five hundred seconds before multilayer deposition. The acid may be an inorganic acid, such as sulfuric acid, phosphoric acid, hydrochloric acid, nitric acid, etc., or an organic acid, such as oxalic acid, acetic acid, etc. The method may include abrading the substrate and rinsing the substrate with deionized water before polarizing the substrate, and applying the polyelectrolyte multilayers following pretreatment.
Abstract:
This invention relates to electrically conductive polymers grafted to the surface of insulating polymers. Simultaneous polymerization and grafting reactions of conducting precursors form conductive polymer layers that dramatically increase the electrical conductivity of the respective insulating polymer films.