| 摘要 |
PROBLEM TO BE SOLVED: To provide a new material having a bipolar property, a light-emitting element provided with the new material, and a display containing the light-emitting element. SOLUTION: The pyrazine derivative is expressed by general formula (g-1) (R<SP>1</SP>, R<SP>2</SP>and R<SP>3</SP>are each a hydrogen atom, an alkyl group or an aryl group; A is a substituent expressed by general formula (a-1), general formula (a-2), general formula (a-3) or general formula (a-4); R<SP>4</SP>is an alkyl group or an aryl group; R<SP>5</SP>, R<SP>6</SP>and R<SP>7</SP>are each a hydrogen atom, an alkyl group or an aryl group; Ar<SP>1</SP>, Ar<SP>2</SP>, Ar<SP>3</SP>, Ar<SP>4</SP>, Ar<SP>5</SP>, Ar<SP>6</SP>and Ar<SP>7</SP>are each an aryl group; andαis an arylene group). COPYRIGHT: (C)2007,JPO&INPIT
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