| 摘要 |
PROBLEM TO BE SOLVED: To obtain a novel amine compound suitable for e.g. hole injection and transport materials of organic electroluminescent elements. SOLUTION: This amine compound is the one represented by formula (1) (wherein Ar<SB>1</SB>to Ar<SB>3</SB>are each independently an (un)substituted biphenyl; and Ar<SB>4</SB>is an (un)substituted phenyl or an (un)substituted naphthyl). COPYRIGHT: (C)2003,JPO
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