Patent ID: 7763761
Filing Date: 2010-07-27
Classification: C07C,C07F,C09K,H01L,H05B,Y10S

Abstract:
1. An asymmetric pyrene derivative represented by general formula (2): wherein, Ar and Ar′ each represents a substituted or unsubstituted aromatic group selected from the group consisting of phenyl group, 1-naphthyl group, 2-naphthyl group, 1-anthryl group, 2-anthryl group, 9-anthryl group, 9-(10-phenyl)anthryl group, 9-(10-naphthyl-1-yl)anthryl group, 9-(10-naphthyl-2-yl)anthryl group, 1-phenanthryl group, 2-phenanthryl group, 3-phenanthryl group, 4-phenanthryl group, 9-phenanthryl group, 1-naphthacenyl group, 2-naphthacenyl group, 9-naphthacenyl group, 2-biphenylyl group, 3-biphenylyl group, 4-biphenylyl group, p-terphenyl-4-yl group, p-terphenyl-3-yl group, p-terphenyl-2-yl group, m-terphenyl-4-yl group, m-terphenyl-3-yl group, m-terphenyl-2-yl group, o-tolyl group, m-tolyl group, p-tolyl group, p-t-butylphenyl group, 3-methyl-2-naphthyl group, 4-methyl-1 -naphthyl group, 4-methyl-1-anthryl group, L and L′ each represents an unsubstituted phenylene group, an unsubstituted naphthalenylene group, an unsubstituted fluorenylene group an unsubstituted dibenzosilolylene group m represents an integer of 0 to 2, s represents an integer of 0 to 2 and t represents an integer of 0 to 4; and L′ or Ar′ bonds to any one of 2, 3 and 6 to 8 positions of pyrene; however, when t is an odd number, Ar, Ar′, L and L′ satisfy the following, requirement (1′) or a requirement (2′): (1′) Ar≠Ar′ and/or L≠L′ (wherein ≠ means that each group has a different structure), (2′) when Ar=Ar′ and L=L′, (2-1′) m≠s and/or t≠1, or (2-2′) when m=s and t=1, (2-2-1′) both L and L′ or pyrene each bonds respectively to different positions of Ar and Ar′, or (2-2-2′) both L and L′ or pyrene each bonds to the same positions of Ar and Ar′, excluding a case where L′ or Ar′ bonds to 6 position thereof, and when t=0, then m=0 and Ar is 9-(10-naphtyl-2-yl)anthryl group, AR is the substituted or unsubstituted aromatic group selected from the groups defined above, or L is phenylene group, m is 1 or 2, with the proviso that symmetric compounds are excluded.