| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a long-lived organic EL element with high luminous efficiency and a luminescent material materializing it. Ž<P>SOLUTION: A material for an organic electroluminescent element is represented by the general formula [1], wherein X<SP>1</SP>and X<SP>2</SP>are alkyl or aryl. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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