Light-emitting material, compound, long-persistent phosphor and light-emitting element

A compound represented by the following general formula (1):

• wherein R2 is a cyano group,
• R1 alone or alternatively each of R1 and R4 is independently an aryl group Ar optionally substituted with an alkyl group or an aryl group in which the aryl group Ar has a benzene ring that may be condensed with a ring that may optionally contain an oxygen atom or a sulfur atom in addition to carbon atoms as a ring skeleton-constituting atom, but is not condensed with a ring containing any other hetero atom than an oxygen atom and a sulfur atom as a ring skeleton-constituting atom, the total carbon number of the Ar is 6 to 30, and when R1 and R4 are Ar's, these Ar's may be the same as or different from each other,
• each of R3 and R5 or alternatively each of R3, R4 and R5 is a donor group D except when one corresponds to Ar, and the two or three D's may be the same as or different from each other, D is represented by the following formula (5):
• wherein R61 to R68 each independently represent a hydrogen atom or a substituent;
• L13 represents a single bond;
• R61 and R62, R62 and R63, R63 and R64, R65 and R66, R66 and R67, R67 and R68 each may bond to each other to form a linking group necessary for forming a cyclic structure;
• and * indicates a bonding position to a carbon atom (C) constituting the ring skeleton of the benzene ring in the general formula (1).