Patent ID: 8471017

Claim:
A light-emitting element comprising a quinoxaline derivative between a pair of electrodes, the quinoxaline derivative being represented by the structure: wherein: R 1 , R 2 , R 3 and R 4 each represent any of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 25 carbon atoms; R 5 represents any of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 25 carbon atoms; Ar 1 represents an aryl group having 6 to 25 carbon atoms; α represents an arylene group having 6 to 25 carbon atoms; A is selected from: β represents an arylene group having 6 to 25 carbon atoms; Ar 3 and Ar 4 each represent an aryl group having 6 to 25 carbon atoms; Ar 5 represents an aryl group having 6 to 25 carbon atoms; R 31 represents any of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 25 carbon atoms; γ represents an arylene group having 6 to 25 carbon atoms; and R 41 and R 42 each represent any of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 25 carbon atoms.