2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/20650The bandstructure of pentacene is calculated using first-principles density functional theory. A large anisotropy of the hole and electron effective masses within the molecular planes is found. The band dispersion of the HOMO and the LUMO is analyzed with the help of a tight-binding fit. The anisotropy is shown to be intimately related to the herringbone structure.Accepted for publication in Synthetic MetalsMaterials Sciencetext