This paper gives a theoretical study on several multiring arene electroluminescent (EL) materials. Their geometric configuratoins have been optimized by abinitio(RHF/4-31G) and semi emipirical AM1

PM3. Conformation analysis has been carried out for compound E

2

. The conformation with minimum energy has been obtained

namely

two-sided benzene rings twist 41.6°±0.5° inwards and outwards respectively. For all optimal configurations

there is no imaginary frequence in vibrational anslysis. On this basis

the electronic spectra have been calculated by RHF/CIS. The relation between CIS configuration number and wave length λ of electronic spectra is also discussed. The calculation results are basically consistent with experimental values.