title: Conjugated oligothienyl dendrimers based on a pyrazino[2,3-g]quinoxaline core.
abstract: The synthesis of a new series of conjugated dendrimers based on an electron-accepting core is introduced. The compounds showed broad absorption bands over 300-700 nm and have reduced HOMO-LUMO gaps of 1.7-1.9 eV. Incorporation of these compounds in bulk heterojunction solar cells as electron-donating material along with PC61BM as electron acceptor gave power conversion efficiencies of up to 1.3% for the second-generation dendrimer.
authors.affiliation: Institute of Organic Chemistry II and Advanced Materials, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany. michael.mastalerz@uni-ulm.de
authors.forename: Michael
authors.initials: M
authors.lastname: Mastalerz
authors.forename: Viktor
authors.initials: V
authors.lastname: Fischer
authors.forename: Chang-Qi
authors.initials: CQ
authors.lastname: Ma
authors.forename: René A J
authors.initials: RA
authors.lastname: Janssen
authors.forename: Peter
authors.initials: P
authors.lastname: Bäuerle