Anthracene derivative and light-emitting device

A solid or liquid composition, comprising:

• a compound represented by a formula (9)
• wherein R represents an alkyl group and n represents an integer from 0 to 3 which indicates the number of substituents;
• and
• at least one compound represented by a formula (1) below:
• wherein
• X represents a residue derived from an aryl ring or a heteroaryl ring which may have one or moresubstituents, or a single bond,
• Ar1 and Ar2 respectively represent an unsubstituted or substituted phenyl group or heteroaryl group,
• Ar3 represents a group having 60 or less carbon atoms, the group represents a structure in which six or less aryl or heteroaryl groups which may have one or more substituents are conjugatedly linked, or the same group as a substituent at the ninth or tenth position on the anthracene ring,
• the substituents on X and Ar1 to Ar3 and R1 to R12 are independently selected from a group consisting of hydrogen, deuterium, fluorine, a cyano group, a trifluoromethyl group, a trimethylsilyl group, an alkyl group, an alkoxy group and a polyoxyalkylene group having 15 or less carbon atoms, a substituted or unsubstituted aryl group and heteroaryl group having 15 or less carbon atoms, and a crosslinkable substituent having 15 or less carbon atoms,
• provided that R1 to R12 may have a structure in which adjacent substituents may be bonded to each other to thereby form a ring, and
• n represents an integer of 0 or 1.