title: Charge transport anisotropy in n-type disk-shaped triphenylene-tris(aroyleneimidazole)s.
abstract: Two novel n-type disk-shaped molecules containing a triphenylene core and three fused naphthaleneimide imidazole or peryleneimide imidazole "arms" are synthesized and characterized. The n-type charge carrier mobilities of these molecules are evaluated by both field effect transistors and space-charge limited-current measurements, which exhibit drastically different mobility anisotropy. A strong correlation between film morphology and the charge transport behavior is established by X-ray scattering and atomic force microscopic analyses.
authors.affiliation: The Molecular Foundry, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, USA.
authors.forename: Yue
authors.initials: Y
authors.lastname: Zhang
authors.forename: David
authors.initials: D
authors.lastname: Hanifi
authors.forename: Steven
authors.initials: S
authors.lastname: Alvarez
authors.forename: Francisco
authors.initials: F
authors.lastname: Antonio
authors.forename: Andrew
authors.initials: A
authors.lastname: Pun
authors.forename: Liana M
authors.initials: LM
authors.lastname: Klivansky
authors.forename: Alexander
authors.initials: A
authors.lastname: Hexemer
authors.forename: Biwu
authors.initials: B
authors.lastname: Ma
authors.forename: Yi
authors.initials: Y
authors.lastname: Liu