A series of heterometallic complexes 2:Ru（bpy）

2

-BL-Eu（TTA）

3

（ClO

4

）

2

3:Ru（bpy）

2

-BL-Yb（TTA）

3

（ClO

4

）

2

and 4:Ru（bpy）

2

-BL-Nd（TTA）

3

(ClO

4

)

2

were synthesized by using the complex 1:Ru（bpy）

2

-BL(ClO

4

)

2

(bpy = 2

2(-bipyridine

BL =N

1

N

4

-bis（（pyridin-2-yl）methylene）benzene-1

4-diamine

TTA = 2-thenoyltrifluoro acetonate) Upon 564 nm excitation

emission spectra show that the emission of four complexes happen at 564 nm for complex 1

610 nm for complex 2

986 and 1 060 nm for complex 3

and 1 064 and 1 331 nm for complex 4 However

in complexes 2

3 and 4

the intensity of emission at 564 nm due to center Ru

2+

decreases or disappears The results indicate that the energy transfer can be realized in the Ru-Ln binuclear complexes.