title: Highly soluble heteroheptacene: a new building block for p-type semiconducting polymers.
abstract: A facial synthetic route to a new heteroheptacene with the inclusion of carbazole and thiophene units is described. The synthesis of two new semiconducting copolymers with use of the heteroheptacene unit is also reported. The introduction of heteroatoms (sulfur, nitrogen) in the fused-ring system leads to small optical band-gaps of these polymers. The charge carrier mobilities for these polymers are measured in ambient conditions which are sufficient for photovoltaic applications.
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao West Road, Fuzhou, Fujian 350002, People's Republic of China. qingdongzheng@fjirsm.ac.cn
authors.forename: Qingdong
authors.initials: Q
authors.lastname: Zheng
authors.forename: Shanci
authors.initials: S
authors.lastname: Chen
authors.forename: Bo
authors.initials: B
authors.lastname: Zhang
authors.forename: Lixin
authors.initials: L
authors.lastname: Wang
authors.forename: Changquan
authors.initials: C
authors.lastname: Tang
authors.forename: Howard E
authors.initials: HE
authors.lastname: Katz