| abstract |
It is an object of the present invention to provide a method, composition and polymer for modifying a substrate surface, which can easily modify a surface region containing a metal atom with high selectivity and high density. The present invention comprises a step of applying the first composition to the surface of a base material having a metal atom on the surface layer and a step of heating the coating film formed by the coating step, and the first composition , The first polymer contains a first polymer and a solvent, and the first polymer contains a group represented by the following formula (1), a group containing a carbon-carbon triple bond, and a group at the end of the main chain or the end of the side chain. A method for modifying the surface of a substrate having at least one first functional group selected from the group consisting of groups containing an aromatic hydroxy group. In the following formula (1), R1 is a hydrogen atom or a monovalent organic group having 1 to 20 carbon atoms. n is an integer of 1 to 10. |