Oblon, McClelland, Maier & Neustadt, L.L.P.
Aromatic amine derivative, material for organic electroluminescent element, and organic electroluminescent element
An aromatic amine derivative is represented by the following formula (1). In the formula (1), R2 to R5, R7 to R9 and R10 are each independently a hydrogen atom or a substituent. R1 and R6 in the formula (1) are each represented by the following formula (2), in which L1 to L3 are each independently, for instance, a single bond. Ar1 in the formula (2) is a monovalent residue derived from a ring structure of the following formula (4), in which X is an oxygen atom or a sulfur atom and at least one of R11 to R18 is a substituted aryl group. Ar1 in the formula (1) is, for instance, an aryl group or a monovalent residue derived from the ring structure of the formula (4).
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C C H H C H C H H H C
C09K C09K H01L H05B C09K H01L C09K H01L H01L H01L C09K
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Hirokatsu Yumiko
Ito Mizuki