Co-assemblies of amphiphilic block copolymers and inorganic nanoparticles are very promising nanocomposites for application in bioimaging and drug delivery[1].Here, co-assemblies of PS-b-PAA and oleic acid-capped CdSe/CdS core/shell quantum dots (QDs) are produced by gradually adding water into THF (tetrahydrofuran) solution which both components are dissolved in.