The molecular weights and hydrodynamic radii of three different supramolecular assemblies formed by coordination of zinc-porphyrins with DABCO are estimated by means of 1H NMR diffusion-ordered spectroscopy (DOSY) confirming their stoichiometries and sandwich-like structure already derived from 1H NMR and UV/Vis titrations experiments.
![Diffusion-ordered spectroscopy (1H-DOSY) of Zn-porphyrin assemblies induced by coordination with DABCO](https://www.iciq.org/wp-content/uploads/2014/03/Diffusion-ordered_2159.gif)