Patent ID: 11785841

Abstract:
A compound having a D-(π)-σ-(π)-A chemical structure and improving brightness and efficiency of light-emitting is described. In an embodiment, the compound has a chemical structure according to Formula (I), in which L1 and L2 are each at least one of a single bond, C1-C20 alkylene, C3-C20 cycloalkylene, C3-C20 heterocyclic alkylene, C6-C40 arylene, C4-C40 heteroarylene, C10-C60 fused arylene, or C10-C60 fused heteroarylene; the electron donor D is C1-C20 alkyl, C3-C20 cycloalkyl, C1-C20 alkoxy, C3-C20 heterocyclic group, C6-C40 aryl, C4-C40 heteroaryl, C10-C60 fused arylene, C10-C60 fused heteroarylene, C12-C40 carbazolyl and its derivative groups, C12-C40 diphenylamino and its derivative groups, C18-C60 triphenylamino and its derivative groups, or C12-C40 acridinyl and its derivative groups; and the electron acceptor A is a nitrogen-containing heterocyclic group, a cyano-containing group, a triarylboron-based group, a benzophenone-based group, an aromatic heterocyclic ketone-based group, a sulfone-based group, or a phosphoroso-containing groups.