| 摘要 |
PROBLEM TO BE SOLVED: To provide an organic EL element which exhibits high light emission efficiency and has a long light emission service life suppressed in the rise of a driving voltage. SOLUTION: In the organic electroluminescent element material, a light emission host or a hole blocking material is a compound expressed by a general formula (1). (In the formula, Ar<SB>11</SB>indicates an aromatic hydrocarbon ring group or an aromatic heterocyclic group, R<SB>11</SB>, R<SB>12</SB>and R<SB>13</SB>indicate a hydrogen atom or a substituent, the combination of R<SB>11</SB>, R<SB>12</SB>and R<SB>13</SB>is not needed to be the same, R<SB>12</SB>and R<SB>13</SB>are not bonded to each other to form an aromatic ring, and n indicates the integer of 2-6). COPYRIGHT: (C)2007,JPO&INPIT
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