In this communication

the poly(vinylidene difluoride) (PVDF)/(Y

0.97

Eu

0.03

)

2

O

3

rare-earth nanocompositeswere prepared by a facile co-precipitation method with the aid of ultrasonic technique.The cross sections of the nanocomposite were observed by scanning electron microscopy (SEM)

and the luminescent properties of the nanocompositeswere studied by fluorescence spectroscopy.The SEM results showed that the (Y

0.97

Eu

0.03

)

2

O

3

nanoparticles were dispersed in PVDF matrix as some aggregateswith the sizes between 50 nm~2μm when themass fraction of (Y

0.97

Eu

0.03

)

2

O

3

was between 1% and 5%;while the (Y

0.97

Eu

0.03

)

2

O

3

particles were better dispersed in the matrix when the (Y

0.97

Eu

0.03

)

2

O

3

mass fraction was lower than 1%.The lumine scence spectra showed a characteristic red-emitting of PVDF/(Y

0.97

Eu

0.03

)

2

O

3

nanocomposites at 612 nm

corresponding to the intrinsic luminescence of the Eu

3+

ion in (Y

0.97

Eu

0.03

)

2

O

3

nanoparticles.The prepared rare-earth nanocomposites with unique optical characteristicmay be used as opticalmaterials in the future.