Patent Number: 8,586,211

Title: Asymmetrical aryl amine derivative for organic electroluminescence devices, method for preparing same, organic thin film for organic electroluminescence devices and organic electroluminescence device using same

Abstract: Provided are asymmetric arylamine derivatives for an organic electroluminescent element, represented by the formula (1), which is prepared by sequentially inducing a secondary amine and a tertiary amine to an aryl compound Ar core so that they do not include a symmetrical axis and a symmetrical surface in a molecule, a manufacturing method of the same, an organic thin layer material including the asymmetric arylamine derivatives, and an organic electroluminescent element employing the same: ##STR00001## wherein Ar represents a C.sub.10-C.sub.20 divalent aryl group, Ar.sub.1 is a divalent C.sub.6-C.sub.30 aryl group, and Ar.sub.2 to Ar.sub.5 each independently represents a divalent C.sub.6-C.sub.30 aryl group, at least one of Ar.sub.2 to Ar.sub.5 having a different structure when the secondary amine and the tertiary amine in Ar are substituted at symmetrical positions, and Ar.sub.2 to Ar.sub.5 having the same structure or different structures when the secondary amine and the tertiary amine in Ar are substituted at asymmetrical positions. The asymmetric arylamine derivative can be used in forming an organic thin layer for an organic electroluminescent element. When the organic electroluminescent element is formed using a dopant as an emitting material, the asymmetric arylamine derivative exhibits superb emission efficiency and an excellent lifetime characteristic in a blue wavelength region.

Inventors: Kim; Sang Dong (Gyeonggi-do, KR), Kim; Se Hun (Gyeonggi-do, KR), Lee; Ji Hye (Gyeonggi-do, KR), Oh; Yong Ho (Gyeonggi-do, KR)

Assignee: Dongwoo Fine-Chem Co. Ltd.

International Classification: H01L 51/54 (20060101)

Expiration Date: 1/19/12018