Patent ID: 9061903
Filing Date: 2015-06-23
Classification: B01J,B82Y,C09B,C09K

Abstract:
1. A population of nanoparticles, comprising: a plurality of nanoparticles dispersed in an organic solvent, wherein each nanoparticle includes a nanocrystal core including a first semiconductor material, a shell including a second semiconductor material, and an outer layer comprising ligands that each comprise a sulfonate, nitrate, borate, or fluorous anion group, wherein the anion group is bound to one or more metal atoms of the second semiconductor material at the surface of the shell, wherein if the ligand comprises sulfonate, then the sulfonate is selected from the group consisting of trifluoromethanesulfonate (triflate), fluoromethanesulfonate, methanesulfonate (mesylate), nitrophenylsulfonate (nosylate), trifluorethylsulfonate, phenylsulfonate (besylate), and toluenesulfonate (tosylate).