Unsymmetrical Inorganic Particles, and Method for Producing the Same

摘要

The invention relates to unsymmetrical nanoscale or mesoscopic particles, and to a method for preparing the same. Said particles are characterized by a surface F 1 and the zone Z 2 carries groups F 2 different from the groups F 1, the zone Z 1 being free of groups F 2 and the zone Z 2 being free of groups F 1. The method of preparation comprises the following steps: 1) the zone Z 2 of the surface of the initial particles is masked by fixing a polymer nodule thereto; 2) the masked particles obtained at the end of step 1) are treated in order to modify the nonmasked surface zone Z 1 thereof; 3) the polymer nodule is removed after modifying the zone Z 1 ; 4) optionally, the surface of the zone Z 2 of the particles is modified following the demasking process.