NOVELTY - Nanoparticle complex (40) comprises a semiconductor nanocrystal, and a metal complex ligand (42) on a surface of the semiconductor nanocrystal.    USE - The nanoparticle complex is useful in: devices (claimed), which includes light emitting device, light emitting diodes, memory devices, laser devices, photoelectric devices, organic photoelectric devices, solar cells, electroluminescent devices and organic light emitting diodes; and physiological field including biotechnology applications.    ADVANTAGE - The nanoparticle complex has excellent stability, device efficiency and lifetime.    DETAILED DESCRIPTION - Nanoparticle complex (40) comprises either: a semiconductor nanocrystal, and a metal complex ligand (42) on a surface of the semiconductor nanocrystal; a nanoparticle (41), and a metal complex ligand on a surface of the nanoparticle, where the metal complex ligand comprises a crosslinkable functional group at an end of the metal complex ligand; or a nanoparticle, and a metal complex ligand on the surface of the nanoparticle, where a first ligand of the metal complex ligand is connected to a second ligand of the same or another metal complex ligand by a bond derived from at least one cross-linkable functional group, or the first ligand and the second ligand are connected through a functional group derived from a polymerizable monomer having a functional group which forms a bond with the crosslinkable functional group. An INDEPENDENT CLAIM is also included for manufacturing a nanoparticle complex comprising (a) synthesizing a nanoparticle, (b) binding a surface of the nanoparticle with a metal complex ligand to form a bound nanoparticle, and (c) adding the bound nanoparticle to a combination comprising a polymerizable monomer or a polymer comprising a reactive functional group to form a polymer shell (49) on the bound nanoparticle to form the nanoparticle complex.    DESCRIPTION OF DRAWING(S) - The figure shows schematic views of a nanoparticle complex.    Nanoparticle complex (40)    Nanoparticle (41)    Metal complex ligand (42)    Metal (43)    Polymer shell (49)