| abstract |
PCT No. PCT/JP91/01228 Sec. 371 Date May 4, 1992 Sec. 102(e) Date May 4, 1992 PCT Filed Sep. 17, 1991 PCT Pub. No. WO92/05131 PCT Pub. Date Apr. 2, 1992.An electroluminescence device (organic EL device) which comprises a pair of electrodes with an emitting layer therebetween. The emitting layer contains a dimerized styryl compound of the formula <IMAGE> wherein D and D' are each an arylene group or a divalent aromatic heterocyclic group, E, E', F, F' G and G' are each a hydrogen, an aryl group, an alkyl group, an aralkyl group, an alkoxyl group or a monovalent aromatic heterocyclic group and Q is a divalent group which breaks the conjugation. The dimerized styryl compound has a desirable light emitting efficiency which serves to increase the molecular weight to improve the thin film property. The organic EL device of the present invention is useful in preparing display devices. |