The present invention relates to a new class of surface modified particles and
to a multi-step surface modification process for the preparation of the same. The
multi-step surface functionalization process involves two or more reactions to
produce particles that are compatible with various host systems and/or to provide
the particles with particular chemical reactivities. The initial step comprises
the attachment of a small organic compound to the surface of the inorganic particle.
The subsequent steps attach additional compounds to the previously attached organic
compounds through organic linking groups.