Compound, organic electroluminescent device including the same and electronic apparatus
A compound having a structure represented by Formula I, and an organic electroluminescent device and an electronic apparatus including the same. The compound may be used as a hole transport material of an organic electroluminescent device. The compound provided by the present disclosure has a shallow LUMO, an appropriate HOMO energy level and a high triplet energy level E T , and can effectively improve hole transport ability, and block electron transition and exciton transport; meanwhile, the compound has high electron mobility, and excellent thermal stability and thin film stability. The compound provided by the present disclosure is used as the hole transport material of an organic electroluminescent device, so that the material has good solubility and appropriate mobility and the inter-pixel cross-talk is effectively avoided, which is conducive to improving light emitting efficiency and lifetime of the device.
1. A compound comprising a structure represented by any one of Formula II-1 to Formula II-12:
wherein L is any one selected from a group consisting of substituted or unsubstituted C1 to C20 linear or branched alkylene, substituted or unsubstituted C6 to C40 arylene and substituted or unsubstituted C3 to C40 heteroarylene;
wherein R 1 and R 2 are each independently any one selected from a group consisting of substituted or unsubstituted C6 to C40 aryl and substituted or unsubstituted C3 to C40 heteroaryl, and the dashed arc between R 1 and R 2 indicates that R 1 and R 2 are not joined to each other or joined to form a ring;
wherein R 3 and R 4 are each independently any one selected from a group consisting of C1 to C20 linear or branched alkyl, C3 to C20 cycloalkyl, C6 to C30 arene and C3 to C30 heteroarene; and
wherein n is 0 or 1.
2. The compound according to claim 1 , wherein n is 1 .
3. The compound according to claim 1 , wherein L is any one selected from a group consisting of substituted or unsubstituted C6 to C20 arylene and substituted or unsubstituted C3 to C20 heteroarylene;
wherein when a substituent is present in the above groups, the substituent is at least one selected from a group consisting of C1 to C10 linear or branched alkyl, C6 to C20 aryl and cyano.
4. The compound according to claim 3 , wherein L is any one selected from the following groups or any one of the following groups substituted with a substituent:
wherein the dashed line represents a linkage site of the group; and
the substituent is at least one selected from a group consisting of C1 to C10 linear or branched alkyl, C6 to C20 aryl and cyano.
5. The compound according to claim 1 , wherein R 1 and R 2 are each independently any one selected from a group consisting of substituted or unsubstituted C6 to C20 aryl and substituted or unsubstituted C3 to C20 heteroaryl, and R 1 and R 2 are not joined to each other or joined to form a ring;
wherein when a substituent is present in the above groups, the substituent is at least one selected from a group consisting of C1 to C10 linear or branched alkyl, C6 to C20 aryl, C3 to C15 heteroaryl and cyano.
6. The compound according to claim 1 , wherein R 1 and R 2 are joined via a single bond to form a ring.
7. The compound according to claim 1 , wherein R 3 and R 4 are each independently any one selected from a group consisting of C1 to C10 linear or branched alkyl, C3 to C10 cycloalkyl, C6 to C15 arene and C3 to C15 heteroarene.