Domain diagram for supersaturation needed for a given polymorph pair to select kinetically the metastable or stable forms.
Kinetic access to distorted metallocyclic and trigonal prismatic assemblies can be achieved using auxiliary ligands to control the dynamics of M–L interactions.
In Gd2O3:Er nanoparticles, we reveal four parallel channels of Gd3+def → Er3+ energy transfer by kinetic selection of excited states.