title: Crystal design using multipolar electrostatic interactions: A concept study for organic electronics.
abstract: Using a simple synthetic protocol, heterohexacene analogues with a quadrupolar distribution of partial charges are readily available. In contrast to most other acenes, these compounds crystallize with a slipped-stack, brickwork-like packing which is mainly controlled by electrostatic interactions. This type of packing offers an advantage for organic semiconductors, because it allows more isotropic charge transport compared to the "herring bone" stacking observed for other acenes.
authors.affiliation: Merck KGaA, Liquid Crystal R&D Chemistry, Frankfurter Str. 250, D-64392 Darmstadt, Germany, Tel: (+49)6151-72-41118.
authors.forename: Peer
authors.initials: P
authors.lastname: Kirsch
authors.affiliation: Merck KGaA, Liquid Crystal R&D Chemistry, Frankfurter Str. 250, D-64392 Darmstadt, Germany, Tel: (+49)6151-72-41118.
authors.forename: Qiong
authors.initials: Q
authors.lastname: Tong
authors.affiliation: Merck KGaA, Liquid Crystal R&D Chemistry, Frankfurter Str. 250, D-64392 Darmstadt, Germany, Tel: (+49)6151-72-41118.
authors.forename: Harald
authors.initials: H
authors.lastname: Untenecker
keywords: aromatic stacking; charge carrier transport; crystal design; electrostatic control; organic semiconductor; organo-fluorine