| abstract |
(57) [Problem] To provide a light emitting element material with low voltage drive, high luminance, and long life. SOLUTION: A light-emitting element material comprising a compound represented by the following general formula (I). General formula (I) (Wherein, R 1 to R 8 each represent a hydrogen atom or a substituent. X is O, S or N—R (R is a hydrogen atom, an aliphatic hydrocarbon group, Represents an aryl group or a heterocyclic group. ). Y is O, S or CQ 1 (Q 2 ) (Q 1 and Q 2 represent a hydrogen atom or a substituent, at least one of which is an electron-withdrawing group. Q 1 and Q 2 are linked to each other to form a ring But at least one of them has an electron-withdrawing group.). Z represents -OM or -N (R a ) (R b ). R a and R b are each a hydrogen atom, an aliphatic hydrocarbon group, Represents an aryl group or a heterocyclic group. R a and R b , and / or Alternatively, R a and R 1 , and / or R b and R 2 may be linked to each other to form a ring. M has the same meaning as R or a cation. ) |