Molecule (I) comprising at least one functional group for attaching the radioactive parent nuclide, and a molecular moiety suitable for establishing a non-polar bond to the support, is new. Independent claims are included for: (1) a support for use as stationary phase comprising (I), which is attached to the support via a non-polar bond (2) a generator for a radioactive daughter nuclide, preferably gallium-68, comprising (I), a support, and a parent nuclide, preferably germanium-68, which is attached to (I) via the functional group and (3) preparing the radioactive daughter nuclide, comprising providing the generator comprising a support and a parent nuclide to which (I) is attached and eluting the daughter nuclide.
