CdSe nanoparticles stabilized with the amphiphilic diblock copolymer polystyrene-block-poly(4-vinylpyridine) were spread from toluene dispersion on the water surface. Monolayers could be transferred onto solid substrates using the Langmuir-Blodgett technique. By means of atomic force and scanning electron microscopy highly symmetric ring and disk-like structures with diameters ranging between 150 nm and 1200 nm were observed.