| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electron transport material achieving characteristics such as long lifetime of an organic EL element, reduction in a drive voltage and high efficiency improvement in a good balance, and further to provide an organic EL element using the electron transport material.SOLUTION: There are provided a compound represented by the following formula (1) and an organic EL element using the compound. In the formula (1), Ar is an m-valent group derived from an aromatic hydrocarbon having 6 to 50 carbon atoms or an m-valent group derived from an aromatic heterocyclic ring having 2 to 50 carbon atoms and at least one hydrogen of these groups may be replaced by an alkyl having 1 to 6 carbon atoms, a cycloalkyl having 3 to 6 carbon atoms or an aryl having 6 to 12 carbon atoms; Ris an alkyl having 1 to 4 carbon atoms; m is an integer of 2 to 4; 2 to 4 pyridylphenyl groups may be the same or different; and each of the rings in the formula and optional hydrogen of the alkyl may be replaced by deuterium.</p> |
