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US 10,693,074 B2Granted
5,12-dihydrotetracene derivative and organic electroluminescence device using the same
OwnerFeng-Wen Yen, Li-Chieh Chuanginventors
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Abstract
The present invention discloses a 5,12-dihydrotetracene derivative and an organic electroluminescence device employing the 5,12-dihydrotetracene derivative as the thermally activated delayed fluorescence host material or the thermally activated delayed fluorescence dopant material in the light emitting layer. The organic electroluminescence device of the present invention exhibits improved performance, such as reduced power consumption and increased current efficiency.
Claims9
A 5,12-dihydrotetracene derivative of formula (1) or formula (2) below:
- wherein L represents a single bond, a substituted or unsubstituted divalent arylene group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted divalent heteroarylene group having 6 to 30 ring carbon atoms;
- D is an electron donor moiety selected from the group consisting of a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted biscarbazolyl group, a substituted or unsubstituted dihydroacridine group, a substituted or unsubstituted phenoxazine group, and a substituted or unsubstituted diarylamine group;
- and A is an electron acceptor moiety selected from the following formulas:
- wherein p represents an integer of 0 to 4;
- q represents an integer of 0 to 5;
- r represents an integer of 1 to 4;
- Y1 to Y4 are each independently a divalent bridge selected from the group consisting of O, S, C(R22)(R23), NR24, and Si(R25)(R26);
- X1 to X7 independently represent a nitrogen atom or C(Rs), and each Rs represents a hydrogen atom, a halide, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms;
- Z represents a cyano group or a fluorine atom;
- and R10 to R26 are independently selected from the group consisting of a hydrogen atom, a halide, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 30 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms.
7 more elements
Dependencies are inferred from the claim text.