Patent ID: 11957046
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  H | IPC H

Claim 1:
2. The electroluminescent device of claim 1, wherein the first hole transporting material comprises a compound represented by Chemical Formula 1:, wherein, in Chemical Formula 1,
R1 and R2 is each independently the unsubstituted C4 to C20 alkyl group, a substituted or unsubstituted C3 to C20 cycloalkyl group, a substituted or unsubstituted C6 to C20 aryl group, a substituted or unsubstituted C3 to C20 heteroaryl group, a substituted or unsubstituted C2 to C40 alkylamine group, or a substituted or unsubstituted C12 to C40 arylamine group,
X1 and X2 are each independently N or C(—Ra), and X3 and X4 are each independently S, N—Rb, or C(—Rc)(—Rd), wherein Ra, Rb, Rc, and Rd are each a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C3 to C20 cycloalkyl group, a substituted or unsubstituted C6 to C20 aryl group, or asubstituted or unsubstituted C3 to C20 heteroaryl group,
L1 and L2 are each independently a single bond, a substituted or unsubstituted methylene group, or a substituted or unsubstituted C2 to C4 alkenylene group,
i is 1, and
j, k, l, and m are each independently 0 or 1, and
wherein the substituted refers to the case where a hydrogen atom in a given group is substituted with a halogen atom, a hydroxyl group, an alkoxy group, a C1 to C20 alkyl group, a C6-C30 aryl group, or a combination thereof.