In recent year

organic electroluminesence (EL) has attracted much attention because of its potential applications in large area full color flat panel displays. Organometallic complexes

which have five-or six-membered ring structures

with high stability

high melting point and high fluorescence quantum efficiency

are widely applied in organic EL devices. Organometallic complexes formed with imidazole

benzimidazole or pyridyl benzimidazole as small molecular ligand have attracted widespread attentions because of their high photoluminescence and electroluminesence officiency. In this paper

a new light emitting material 2

6-bis(benzimi-dazol-2-yl)pyridine-zinc acetate was synthesized. Its structure and optical properties were investigated by FT-IR spectra

UV-Vis absorption spectra

fluorescence excitation spectra and emitting fluorescence spectra. Its energy band and light emission mechanism were discussed. Results show that 2

6-bis(benzimidazol-2-yl)pyridine-zinc acetate is a tridentate ligand light emitting material. Its infrared spectra show relatively high intensity band at about 1 606 cm

-1

. This band is typical of the benzimidazole ring conjugated C=N stretching vibration

which shifts to lower frequency related to the free ligand.The pyridine ring conjugated C=N stretching vibration at 1620 cm

-1

it also shifts to lower frequency related to the free ligand. Its UV absorption bands are at 346 nm and 366 nm

which can be assigned to nitrongen→zinc charge transfer.The complexe in N

N-dimethylformamide emitted intensive blue fluorescence with peak wavelength of 458 nm and its powder form also emitted intensive blue fluorescence with peak wavelength of 475 nm under UV irradiation.Its optical gap was estmated about 3.01 eV. Its fluorescence is chiefly attributed to the long wavelength excitation band. The complexe is expected to find applications in organic electroluminesence diodes through appropriate design.