Inorganic nanocrystals with an organic coating and preparation process thereof

Nanocrystal comprising an inorganic core consisting of at least one metal and / or at least one semiconductor compound comprising at least one metal, the nanocrystal outer surface of said one organic coating layer consisting of at least one compound being provided ligand of formula (I): wherein: XYZ (I) - X represents a 1,1-dithiolate or 1,1-diselenolato group which is bonded through the two sulfur or selenium atoms to a metal atom of the outer surface of the nanocrystal; - Y represents a spacer group, as a group capable of allowing charge transfer or an insulating group; - Z is a group chosen from groups capable of communicating specific properties to the nanocrystal.