Abstract: A method for extracting uranium (VI) from an aqueous solution including phosphoric acid, which includes placing the aqueous solution 5 in contact with an organic material, followed by separating the aqueous solution and the organic material. The organic material includes a solid polymer substrate impregnated with a compound having the following general formula (I): The invention also relates to a method for retrieving uranium (VI) from an aqueous solution including phosphoric acid.

Abstract: An organic material which includes a solid polymer substrate onto which molecules having the following general formula (I) are grafted: The invention also relates to the use of the organic material to extract the uranium (VI) from an aqueous acid solution, to associated methods for extracting and retrieving uranium (VI) as well as to a molecule which is a precursor of the organic material. The disclosure also relates to the use of the organic material to extract the uranium (VI) from an aqueous acid solution, to associated methods for extracting and retrieving uranium (VI) as well as to a molecule which is a precursor of the organic material.