Method for preparing an organic film at the surface of a solid support under non-electrochemical conditions, solid support thus obtained and preparation kit

A method for preparing an organic film, comprising contacting a surface of a solid support with a liquid solution to form an organic film on the surface of the solid support, the solution comprising:

• at least one protic solvent,
• at least one adhesion primer,
• at least one radically polymerizable monomer, said monomer being different from the adhesion primer,
• under non-electrochemical conditions generating radical entities based on the adhesion primer, where the adhesion primer generates radical entities independent of the surface on which which said radical entities are intended to be bonded, and when the non-electrical conditions are chemical and include a chemical initiator, the chemical initiator is different from the solid support, and
• wherein the surface of the solid support contacted with said liquid solution comprising at least one area covered with a mask,
• wherein the organic film is polymeric or copolymeric and has a monomer unit sequence in which a first unit is bonded to the solid support and is a derivative of the adhesion primer and other units are derived from said adhesion primer and from polymerizable monomers.