Ap. Desilva et al., SWITCHING ON THE LUMINESCENCE OF ONE METAL-ION WITH ANOTHER - SELECTIVITY CHARACTERISTICS WITH RESPECT TO THE EMITTING AND TRIGGERING METAL, Chemical communications, (19), 1997, pp. 1891-1892
Complexes 1a.Eu-III and 1b.Eu-III, but not 1a.Tb-III and 1b.Tb-III, di
splay strong 'off-on' luminescence with alkali cations; the switching
efficiency of 1b.Eu-III is stronger with K+ rather than Na+.