Process for preparing an organic film at the surface of a solid support by transfer or by spraying

Patent metadata

Field	Value
Publication number	US-9890235-B2
Application number	US-201214005116-A
Country	US
Kind code	B2
Filing date	Mar 21, 2012
Priority date	Mar 22, 2011
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

A method is provided for preparing an organic film on the surface of a solid support including the steps of (a) applying, to the surface, by transfer or by spraying, a solution containing at least one cleavable aryl salt; and (b) subjecting the solution to a UV or visible irradiation, such that irradiation radical entities are formed from the cleavable aryl salt and an organic film is grafted. Further provided is a kit of elements for the implementation of such a method.

First claim

The invention claimed is:

1. A method for preparing an organic film on the surface of a solid support by radical chemical grafting, comprising:
a) applying onto said surface, by transfer or by spraying, a solution containing at least one salt of aryl diazonium, a photosensitizing agent, and a sacrificial electron donor, wherein applying by transfer consists of applying or depositing a layer of the solution not exceeding 5 mm thick onto the surface and applying by spraying consists of applying or depositing drops of the solution onto the surface wherein the volume of the drops is between 1 pl and 400 μL and
b) subjecting said solution to a UV or visible irradiation, by means of which radical entities are formed from the salt of aryl diazonium and an organic film in the form of (co)polymers is grafted to the surface;
wherein at least one monomer unit of the (co)polymers constituting the grafted organic film is derived from the salt of aryl diazonium, and
wherein said method is performed under ambient air.

2. The method according to claim 1 , wherein said application by transfer requires a pen, a paintbrush, a roller, a marker, a pad or a micro-pad.

3. The method according to claim 1 , wherein said application by spraying requires an electrostatic spray, a centrifugal spray, an atomiser, a mist-maker, an airbrush and/or a device of the inkjet type.

4. The method according to claim 1 , wherein said step (a) is accomplished before said step (b).

5. The method according to claim 1 , wherein said steps (a) and (b) are implemented simultaneously.

6. The method according to claim 1 , wherein said solution also contains at least one monomer which can be polymerised by radical means, and which is distinct from said salt of aryl diazonium.

7. The method according to claim 6 , wherein said solution also contains at least one element selected from the group consisting of a thickening agent, a gelling agent, a surfactant and a cross-linking agent.

8. A method to produce at least one track in which a liquid of interest may flow over a solid support, comprising preparing an organic film which is wettable by said liquid of interest on the surface of said solid support according to a method as defined in claim 6 .

9. The method according to claim 1 , wherein said solution also contains at least one element selected from the group consisting of a thickening agent, a gelling agent, a surfactant and a cross-linking agent.

10. The method according to claim 1 , wherein said steps (a) and (b) are repeated at least two, three, four or five times, enabling a multi-layer structure to be obtained.

11. The method according to claim 1 , wherein, prior to application, by transfer or by spraying, of the solution onto the surface of the solid support, the surface is subjected to an oxidising (pre-)treatment.

12. The method according to claim 1 , wherein said steps (a) and (b) are followed by a step comprising applying, on the organic film obtained, by transfer or spraying, a suspension of nano-objects.

13. The method according to claim 12 , wherein said suspension of nano-objects is a suspension of nanoparticles.

14. The method according to claim 1 , wherein said steps (a) and (b) are followed by a step of metallisation.

15. A method to produce at least one track in which a liquid of interest may flow over a solid support, comprising preparing an organic film which is wettable by said liquid of interest on the surface of said solid support according to a method as defined in claim 1 .

Assignees

• Berthelot Thomas
• Viel Pascal
• Garcia Alexandre
• Jousselme Bruno
• Baudin Cecile
• Commissariat Energie Atomique

Inventors

• Berthelot Thomas
• Viel Pascal
• Garcia Alexandre
• Jousselme Bruno
• Baudin Cecile

Classifications

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• B05D3/067

  Curing or cross-linking the coating · CPC title

• B05D3/06

  by exposure to radiation (B05D3/02 takes precedence {; plasma treatment B05D3/141}) · CPC title

• C09D4/00 Primary

  Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond {; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16} · CPC title

• B05D1/185

  applying monomolecular layers (B05D1/204 takes precedence) · CPC title