| 摘要 |
<p>A novel imidazole derivative, and an organic electronic device using the derivative are provided to improve efficiency and stability, to increase lifetime and to lower driving voltage. An imidazole derivative is represented by the formula 1, wherein at least one of R1 ~ R4 is represented by -L1-Ar1; the rest of R1 ~ R4 are identical or different one another and are independently selected from the group consisting of a C6~C40 aryl group, a C5~C40 heteroaryl group and an amino group; L1 is a direct bond or is selected from the group consisting of an alkenylene group of C2~C40, an arylene group of C6~C40, a heteroarylene group of C5~C40, an arylamine group of C6~C40, a spiro group of C25~C40 and an opened spiro group of C25~C40; and Ar1 is selected from the group consisting of hydrogen, an alkyl group of C1~C40, a cycloalkyl group of C3~C40, an alkenyl group of C2~C40, an alkoxy group of C1~C40, an amino group, an aryl group of C6~C40 and a heteroaryl group of C5~C40.</p> |
