| 摘要 |
PROBLEM TO BE SOLVED: To provide an electron transport material usable as a light emitting layer host material and a hole block electron transport material, an electron transport material, etc., for organic and inorganic blue light emitting materials. SOLUTION: The electron transport material is expressed by formula (1), wherein R<SB>1</SB>to R<SB>4</SB>each represent fluorine or a methyl group, R<SB>5</SB>to R<SB>8</SB>each represent hydrogen, fluorine and a group independently selected from a group consisting of a methyl group, and Ar represents a substituted or unsubstituted≤20C aryl group or heteroaryl group, a group having not larger than two rings connected, or a group comprising one ring into which two rings are condensed. COPYRIGHT: (C)2010,JPO&INPIT |
