OXADIAZOLE DERIVATIVE AND LIGHT-EMITTING ELEMENT LIGHT-EMITTING DEVICE ELECTRONIC DEVICE AND LIGHTING DEVICE USING THE OXADIAZOLE DERIVATIVE

摘要

An object of the present invention is to provide a novel oxadiazole derivative as a substance having a large excitation energy, particularly a substance having a high triplet excitation energy.An embodiment of the present invention is an oxadiazole derivative represented by the following general formula (G1).[General formula (G1)] In the general formula (G1), R^OneRepresents an alkyl group having 1 to 4 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms. In the general formula (G1), R²¹~ R²⁷Each independently represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms. In the general formula (G1), represents any of a substituted or unsubstituted arylene group having 6 to 13 carbon atoms. In the general formula (G1), Z represents either a sulfur atom or an oxygen atom.;