title: Layered Electron Acceptors by Dimerization of Acenes End- Capped with 1,2,5-Thiadiazoles.
abstract: Layered electron acceptors D1-4 equipped with terminal 1,2,5-thiadiazole groups have been constructed using a one-pot protocol of acene dimerization. Their molecular structures are determined using single-crystal X-ray diffraction analysis. Photophysical and electrochemical properties of these molecules present a marked dependence on conjugation length and molecular geometry. An aggregation-induced emission peak and an intramolecular excimer emission (IEE) band were observed for D2 and D4, respectively. This work paves the way for the efficient synthesis of layered heteroacenes.
authors.affiliation: Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.
authors.forename: Debin
authors.initials: D
authors.lastname: Xia
authors.affiliation: Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.|Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Guo
authors.affiliation: Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.|Department of Chemistry, School of Science, Tianjin University, 300072, Tianjin, China.
authors.forename: Long
authors.initials: L
authors.lastname: Chen
authors.affiliation: Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany. baumgarten@mpip-mainz.mpg.de.
authors.forename: Martin
authors.initials: M
authors.lastname: Baumgarten
authors.affiliation: Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.
authors.forename: Ashok
authors.initials: A
authors.lastname: Keerthi
authors.affiliation: Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany. muellen@mpip-mainz.mpg.de.
authors.forename: Klaus
authors.initials: K
authors.lastname: Müllen
keywords: acenes; cyclization; dimerization; excimers; organic semiconductors