Aromatic compound

An aromatic compound of the following formula (6-1):

• wherein X9, X10, X11 and X12 each independently represent a halogen atom, an alkylsulfonate group, an arylsulfonate group, an arylalkylsulfonate group, a boric ester group, —B(OH)2, a monohalogenated-methyl group, a sulfonium-methyl group, a phosphonium-methyl group, a phosphonate-methyl group, a cyano methyl group, a formyl group or a vinyl group;
• Ar6 and Ar7 each independently represent a trivalent aromatic hydrocarbon group or a trivalent heterocyclic group, wherein Ar6 and Ar7 may have a substituent;
• A1 represents —Z1—, wherein Z1 represents O, S, C(═O), S(═O), SO2, C(R1)(R2), Si(R3)(R4), N(R5), B(R6), P(R7) or P(═O) (R8), wherein R1, R2, R3, R4, R5, R6, R7 and R8 each independently represent a hydrogen atom, a halogen atom, an alkyl group, an alkyloxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkyloxy group, an arylalkylthio group, an acyl group, an acyloxy group, an amide group, an acid imide group, an imine residue, an amino group, a substituted amino group, a substituted silyl group, a substituted silyloxy group, a substituted silylthio group, a substituted silylamino group, a mono-valent heterocyclic group, a heteroaryloxy group, a heteroarylthio group, an arylalkenyl group, an arylethynyl group, a carboxyl group, an alkyloxycarbonyl group, an aryloxycarbonyl group, an arylalkyloxycarbonyl group, a heteroaryloxycarbonyl group or a cyano group, wherein R1, R2, R3 and R4 may be mutually connected to form a ring, and
• wherein the compound represented by formula (6-1) may have a substituent on the benzene ring in the compound, and substituents may be mutually connected to form a ring.