Luminescence of Novel Neodymium Sulfonylaminate Complexes in Organic Media.
Luminescence of Nd(III) in an organic solvent having C-H bonds was achieved for the first time by complexing Nd(III) with long-chain perfluoroalkylated ligands such as bis(perfluorooctylsulfonyl)aminate (pos). The complex [Nd(pos)(3)] gave an emission quantum yield of 3.0+/-0.5 % in undeuterated acetone. The bulky pos ligands suppress the excitation of C-H vibrations, energy migration at diffusional collision, and the coordination of acetone molecules (see picture) to the Nd(III) center, which otherwise quench the luminescence.
Hasegawa
Y
Wada Material and Life Science, Graduate School of Engineering Osaka University, Yamada-oka, Suita, Osaka 565-0871 (Japan).
Ohkubo
T
Sogabe
K
Kawamura
Y
Wada
Y
Nakashima
N
Yanagida
S