Characteristic emission of beta-diketonato Nd3+ complexes dressed with perfluoroalkyl groups in DMSO-d(6)

Tris(bis(perfluorooctanoyl)methanato)neodyium(III), Nd(POM-D)(3), was successfully synthesized to induce efficient emission in DMSO-d(6). While the emission quantum yield of the tris(hexafluoroacetylacetonato)neodymium(III), Nd(HFA-D)(3), system decreased as the concentration increased, the Nd(POM-D), system gave almost constant quantum yield (3.2%) in DMSO-d(6) ranging in concentration from 0.01 to 0.07 M, The enhanced and characteristic emission of the Nd(POM-D), system suggests that dipole-dipole energy transfer via cross-relaxation through collisions between Nd3+ complex molecules should be suppressed in the fluid system by use of the bulky diketonato complex of Nd3+.