| abstract |
Provided is a composition which is useful for production of a light emitting device excellent in light emission efficiency. n A composition comprising a compound represented by the formula (1) and a phosphorescent compound:n nwherein R 1 and R 2 each independently represent a substituent, n 1 represents an integer of 1 to 14, and Ar 1 represents an arylene group or a divalent heterocyclic group, and at least one of one or more groups Ar 1 is a group represented by the formula (1-A) :n nwherein R 1A to R 8A each independently represent a connecting bond, a hydrogen atom or a substituent, and one of R 1A to R 4A is a connecting bond, and one of R 5A to R 8A is a connecting bond, R 91A represents a substituent, and R 92A represents an aryl group or a monovalent heterocyclic group. |