| 摘要 |
A high- luminance organic EL device employs a particular tetrabenzo[de,hi,op,st]pentacene compound represented by the general formula (1):wherein R<1 >to R<18 >independently represent hydrogen atom, halogen atom, hydroxyl group, amino group, nitro group, cyano group, carboxyl group, alkyl group, alkenyl group, cycloalkyl group, alkoxy group, aromatic hydrocarbon group, aromatic heterocyclic group, aralkyl group, aryloxy group, alkoxycarbonyl group or a derivative thereof; or two of R<1 >to R<18 >may form a ring; provided that at least one of R<1 >to R<18 >is diarylamino group represented by -NAr<1>Ar<2 >where Ar<1 >and Ar<2 >independently represent substituted or unsubstituted aryl group having 6 to 20 carbon atoms.
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