Organic electroluminescent device has become a study hotspot in flat panel display and illuminance fields. In this technology

the design and synthesis of materials are the core

studies on their properties in relation to organic electroluminescence are critical. Schiff base complexes have attracted much attention recently due to their potential application in electroluminescent displays

since the first report on Schiff bases metal complexes organic light-emitting devices (OLEDs) in 1993. Salicylaldehyde has been acted as an usually used reactant in this type of materials. It’s well-known that if an electron-donating group is introduced into a conjugated structure

the photoluminescence efficiency can be enhanced significantly

so a modified method of preparing Schiff bases was used here by the introduction of —OCH

3

to starting material salicylaldehyde. On the other hand

much effort has been devoted to the design and synthesis of boron-containing compounds for their potential applications in functional materials

including OLEDs. Boron is strongly electrophilic by virtue of its tendency to fill the vacant orbital and form 8-coordinated complex

so in contrast to other organometallic compounds

organoboron compounds are in general more stable owing to the increased covalency of B—O and B—N bonds. In this paper

a new Schiff base organoboron complex as an organic electroluminescence material was synthesized by the reaction of ethylenediamine o-vanillin Schiff base (HMOB)

2

en [N

N′-bis(2-hydroxy-3-methoxybenzaldehyde) ethylenediamine] and B(Ac)

3

in absolute toluene. It was characterized by

1

H NMR

13

C NMR and infrared absorption. Photoluminescence and ultraviolet-visible absorption spectra analysis were also conducted.

1

H NMR

13

C NMR and infrared absorption spectra indicate that the complex is a complex with the molecular formula of [B(MOB)

2

en]Ac. The luminescence of [B(MOB)

2

en]Ac was realized by the introduction of B

which strengthened the rigidity of the molecule and decreased the non-radiation transition

finally gave a strong blueish-green-emitting luminescent emission. The peak position of light-emitting is at 485 nm

with a FWHM (Full Width at Half Maximum) of 87 nm

CIE coordinates

x

=0.2211 and

y

=0.4172. The optimum excitation wavelength is 378 nm.