A series of new ternary complexes of 6-methyl-2-picolinic acid N-oxide(HL) and 2,2'-bipyridine-N, N'dioxide(bipyO(2)) with Ln(3+) (Ln = La, Sm, Eu, Gd, Tb, Dy, Yb) were synthesized and characterized. The compo...A series of new ternary complexes of 6-methyl-2-picolinic acid N-oxide(HL) and 2,2'-bipyridine-N, N'dioxide(bipyO(2)) with Ln(3+) (Ln = La, Sm, Eu, Gd, Tb, Dy, Yb) were synthesized and characterized. The composition of the ternary complexes is determined as {LnL(3).bipyO(2).H2O} (n - 1)H2O (n = 2.5 similar to 3.0). They are nonelectrolytes in ethanol. It is found that fluorescence intensities of the ternary complexes, Ln(3).bipyO(2).H2O, are weaker than those of binary complexes, LnL(3).H2O. And it is also found that Tb3+ luminescence at 489.3 nm in TbL3.bipyO(2).H2O is sensitized by bipyO(2), and it is stronger than that at 543.8 nm, Which differs from TbL3. H2O.展开更多
文摘A series of new ternary complexes of 6-methyl-2-picolinic acid N-oxide(HL) and 2,2'-bipyridine-N, N'dioxide(bipyO(2)) with Ln(3+) (Ln = La, Sm, Eu, Gd, Tb, Dy, Yb) were synthesized and characterized. The composition of the ternary complexes is determined as {LnL(3).bipyO(2).H2O} (n - 1)H2O (n = 2.5 similar to 3.0). They are nonelectrolytes in ethanol. It is found that fluorescence intensities of the ternary complexes, Ln(3).bipyO(2).H2O, are weaker than those of binary complexes, LnL(3).H2O. And it is also found that Tb3+ luminescence at 489.3 nm in TbL3.bipyO(2).H2O is sensitized by bipyO(2), and it is stronger than that at 543.8 nm, Which differs from TbL3. H2O.
