Preparation of nanoparticles consisting of a Pt(II)-labelled core. Left: structure of Pt(II)-norbornyl monomer (1), Xray
crystal structure, and amphiphilic block copolymer. Dialysis from DMF into water yielded high contrast, spherical micelles
with Pt(II)-labelled cores (red). Right: (a) conventional dry-state TEM of unstained micelles. (b) STEM-energy-dispersive X-ray
spectroscopy (STEM-EDS) elemental map indicating platinum overlaid on the corresponding STEM-high-angle annular dark-field
microscopy (HAADF) image