Nowadays preparation of inorganic nanoparticles dispersed in polymer nanofiber film has drawn great attention because this kind of nanocomposites combine the unique properties of inorganic nanoparticles (

e.g

.

the high ratio of surface atoms to inner sphere atoms and quantum size effect

etc.

) with the outstanding characteristics of polymer nanofibers (

e.g

.

the high specific surface area and high interpenetrating capacity in other materials

etc.

).Nanofibers of polyacrylonitrile were got by electrospinning.ZnSe/polyacrylo-nitrile fiber nanocomposites were prepared by hydrothermal in diethylene triamine/deionized water solvent mixtures at 180℃ for 6 h.Since spinning polyacrylonitrile materials which were acidic containing a certain amount of itaconic acid

Zn

2+

coordinated with carboxyl

then grew up by bonding Se

2-

through covalent effect to yield ZnSe.The samples were characterized by X-ray diffraction (XRD)

scanning electron microscopy (SEM)

and the PL of nanocomposites blanket was analyzed by fluorescence.The results showed that when the volume ratio of diethylene triamine and deionized water was 1:3

the products would be got with complex topography.Both nanorods with 10～100 nm in diameter 50～500 nm in length and micron blooms with diameter of 4～10μm were got.The emission spectrum of the nanocomposites at an excitation wavelength of 260 nm gave a small peak at 352 nm and a high-wide peak at 427 nm at room temperature

all of these showed blue shift in respect to bulk ZnSe emission of 468 nm.These room temperature photoluminescence properties indicate that the as-prepared material may have potential applications in light-emission optoelectronic devices.