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1. A compound represented by the following formula (I):wherein R1 to R14 are independently a hydrogen atom, a halogen atom, an alkyl group having 2 to 30 carbon atoms, an alkenyl group having 3 to 30 carbon atoms, an alkynyl group having 2 to 30 carbon atoms, a haloalkyl group having 1 to 30 carbon atoms, an alkoxy group having 1 to 30 carbon atoms, a haloalkoxy group having 1 to 30 carbon atoms, an alkylthio group having 1 to 30 carbon atoms, a haloalkylthio group having 1 to 30 carbon atoms, an alkylamino group having 1 to 30 carbon atoms, a dialkylamino group having 2 to 60 carbon atoms, an arylamino group having 6 to 60 carbon atoms, an alkylsulfonyl group having 1 to 30 carbon atoms, a haloalkylsulfonyl group having 1 to 30 carbon atoms, an aromatic hydrocarbon group having 6 to 60 carbon atoms, an aromatic heterocyclic group having 3 to 60 carbon atoms, an alkylsilyl group having 3 to 20 carbon atoms, an alkylsilylethynyl group having 5 to 60 carbon atoms or a cyano group, which groups further may have one or more substituents; and
the two alkyl groups of the dialkylamino group having 2 to 60 carbon atoms may combine with each other to form a cyclic structure containing a nitrogen atom; provided that the compound in which all of R1 to R14 are hydrogen atoms is excluded. |
