New indolizine compounds, organic light-emitting device using an organic light emitting device material having a indolizine skeleton, as well as their

摘要

PROBLEM TO BE SOLVED: To provide an organic material for a light-emitting element, having high luminance, and excellent in durability. ;SOLUTION: This organic material for the light-emitting element is obtained by using an indolizine compound expressed by the formula (1) or the formula (2) (R1 to R7 are each H, an alkyl, an aryl or the like; and R is H, an alkyl, an aryl or a heterocyclic).;COPYRIGHT: (C)2001,JPO