title: Core-Fluorinated Naphthalene Diimides: Synthesis, Characterization, and Application in n-Type Organic Field-Effect Transistors.
abstract: A series of difluoro- and tetrafluoro-substituted naphthalene diimides (NDIs) were synthesized by halogen exchange reactions of corresponding bromo-NDIs with CsF in dioxane. Two strong electron acceptor molecules 6 and 8 with low-lying LUMO energy levels of -4.27 and -4.54 eV were obtained, starting from tetrafluoro-NDI. Organic field-effect transistors (OFETs) based on these fluorinated NDIs were fabricated by vapor deposition, exhibiting n-channel field-effect character under ambient conditions with the highest mobility of 0.1 cm(2) V(-1) s(-1).
authors.affiliation: Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany.
authors.forename: Zhongyi
authors.initials: Z
authors.lastname: Yuan
authors.affiliation: Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany.
authors.forename: Yingjie
authors.initials: Y
authors.lastname: Ma
authors.affiliation: BASF SE, 67056 Ludwigshafen, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Geßner
authors.affiliation: Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany.
authors.forename: Mengmeng
authors.initials: M
authors.lastname: Li
authors.affiliation: Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany.
authors.forename: Long
authors.initials: L
authors.lastname: Chen
authors.affiliation: BASF SE, 67056 Ludwigshafen, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Eustachi
authors.affiliation: BASF SE, 67056 Ludwigshafen, Germany.
authors.forename: R Thomas
authors.initials: RT
authors.lastname: Weitz
authors.affiliation: Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany.
authors.forename: Chen
authors.initials: C
authors.lastname: Li
authors.affiliation: Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany.
authors.forename: Klaus
authors.initials: K
authors.lastname: Müllen