title: Bistetracene: an air-stable, high-mobility organic semiconductor with extended conjugation.
abstract: We report the synthesis and characterization of "bistetracene", an unconventional, linearly extended conjugated core with eight fused rings. The annellation mode of the system allows for increased stability of the conjugated system relative to linear analogues due to the increased number of Clar aromatic sextets. By attaching the appropriate solubilizing substituents, efficient molecular packing with large transfer integrals can be obtained. The electronic structure calculations suggest these large polycyclic aromatic hydrocarbons (PAHs) exhibit excellent intrinsic charge transport properties. Charge carrier mobilities as large as 6.1 cm(2) V(-1) s(-1) and current on/off ratios of 10(7) were determined experimentally for one of our compounds. Our study provides valuable insight into the design of unconventional semiconductor compounds based on higher PAHs for use in high-performance devices.
authors.affiliation: Department of Polymer Science & Engineering, Conte Polymer Research Center, University of Massachusetts , Amherst, Massachusetts 01003, United States.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.forename: Alexandr
authors.initials: A
authors.lastname: Fonari
authors.forename: Yao
authors.initials: Y
authors.lastname: Liu
authors.forename: Andra-Lisa M
authors.initials: AL
authors.lastname: Hoyt
authors.forename: Hyunbok
authors.initials: H
authors.lastname: Lee
authors.forename: Devin
authors.initials: D
authors.lastname: Granger
authors.forename: Sean
authors.initials: S
authors.lastname: Parkin
authors.forename: Thomas P
authors.initials: TP
authors.lastname: Russell
authors.forename: John E
authors.initials: JE
authors.lastname: Anthony
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Brédas
authors.forename: Veaceslav
authors.initials: V
authors.lastname: Coropceanu
authors.forename: Alejandro L
authors.initials: AL
authors.lastname: Briseno