The invention provides a compound with a D-(pi)-sigma-(pi)-A chemical structure. The compound has a chemical structure shown as formula (I), wherein L1 and L2 are selected from at least one of a single bond, C1-C20 alkylene, C3-C20 cycloalkylene, C3-C20 heterocyclylene, C6-C40 arylidene, C4-C40 heteroarylene, C10-C60 fused arylidene or C10-C60 fused heteroarylene; an electrondonor D is selected from C1-C20 alkyl, C3-C20 cycloalkyl, C1-C20 alkoxyl, C3-C20 heterocyclyl, C6-C40 aryl, C4-C40 heteroaryl, C10-C60 fused arylidene, C10-C60 fused heteroarylene, C12-C40 carbazyl and a derivative group of C12-C40 carbazyl, C12-C40 diphenylamine and a derivative group of C12-C40 diphenylamine, C18-C60 triphenylamine and a derivative group of C18-C60 triphenylamine, and C12-C40 acridinyl and a derivative group of C12-C40 acridinyl; an electron acceptor A is selected from a nitrogen-containing heterocyclic substituent, a cyan-containing substituent, a triaryl boron substituent, a benzophenone substituent, a heteroaromatic ketone substituent, a sulfone substituent and a phosphorus-containing oxyl substituent. The invention provides a series of bipolar materials with the D-(pi)-sigma-(pi)-A structure, and luminance and luminous efficiency EQE can be improved.