SELF-ASSEMBLY OF HYPERBRANCHED SPHERES

A new type of building block with two coordinatively unsaturated palla dium centres has been described that self-assembles in nitromethane so lution and disassembles when acetonitrile is added. The resulting hype rbranched, organopalladium spheres have a remarkably narrow size distr ibution as was evidenced by light-scattering, AFM and TEM measurements . Variation of the structure of the building blocks showed the possibi lity to vary the size of the self-assembled spheres between 100 and 40 0 nm.