Eu(BA)

3

was assemblied into the channels of MCM-41 directly

then the organic-inorganic hybrid material Eu(BA)

3

-MCM-41 was gained

and the products were characterized by small angle XRD

IR and excitation-emission spectra.The results indicate that the assembly have more ordered mesoporous structure than MCM-41.Eu(BA)

3

can act as a secondary template when it enters the channel and increase the ordered framework of mesoporous silicon.The assembly keeps some typical absorption band of MCM-41

but the disappearance of the absorption peak at the wavenumber of 3451

1642 cm

-1

and the intensity decrease of the absorption peak at 970 cm

-1

in the assembly show that the water adsorbed and the hydroxyl in MCM-41 are reduced by the entrance of Eu(BA)

3.

Eu(BA)

3

can be bonded with the hydroxyl in the channel

thus the vibration energy of hydroxyl is reduced

then the luminescence of Eu

3+

is enhanced effectively.Eu(BA)

3

has a stronger absorption of the excitated light in the assembly since MCM-41 was used as a host for Eu(BA)

3

and there is strong effect between the host and the guest.The assembly mainly exhibits the fluorescence of Eu(BA)

3

but the luminescence of MCM-41 does not appear.It is due to the fact that Eu(BA)

3

can be incorporated with MCM-41 in the assembly

where the latter transfers the energy absorded to the former

and the luminescence of the guest is highly strengthened.The weak emission peak at 588.3

593.3 nm in Eu(BA)

3

-MCM-41 are formed by the split of the emission peak at 591.3 nm of Eu(BA)

3

which is attributed to the transition of

5

D

0

→7F1 of Eu

3+

.The relative luminescent intensity of the peak at 610.2 nm which belongs to the transition of

5

D

0

→

7

F

2

of Eu

3+

is up to 299 times more than that of Eu(BA)

3.

So it confirms that Eu(BA)

3

-MCM-41 has an excellent luminescence properties.