title: Angular-shaped naphthodifurans, naphtho[1,2-b;5,6-b']- and naphtho[2,1-b;6,5-b']-difuran: are they isoelectronic with chrysene?
abstract: Although angular-shaped naphthodifurans, naphtho[1,2-b;5,6-b']- and naphtho[2,1-b;6,5-b']-difuran, are formally isoelectronic with chrysene as their thiophene counterparts, naphtho[1,2-b;5,6-b']- and naphtho[2,1-b;6,5-b']-dithiophene, the HOMO energy level of naphthodifurans is much higher than those of naphthodithiophenes and chrysene. The difference in electronic structure in the ground state can be explained by distinct electronic perturbation from the outermost aromatic rings.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Nakano
authors.forename: Shoji
authors.initials: S
authors.lastname: Shinamura
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Houchin
authors.forename: Itaru
authors.initials: I
authors.lastname: Osaka
authors.forename: Eigo
authors.initials: E
authors.lastname: Miyazaki
authors.forename: Kazuo
authors.initials: K
authors.lastname: Takimiya