title: Heterohexacene diimides: anti- and syn- isomers and quinonoid forms.
abstract: A number of anti- and syn- isomers of heterocyclic hexacene diimides containing NH and O/S are synthesized. Two stable quinonoid diimides displaying low LUMO levels at less than -4.1 eV are obtained via oxidation of the anti- isomers. Reducing the isolated quinoidal molecules back to dihydro- forms offer pure anti- isomers.
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Department of Applied Chemistry and the Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry, Peking University , Beijing, China.
authors.forename: Kang
authors.initials: K
authors.lastname: Cai
authors.forename: Jiajun
authors.initials: J
authors.lastname: Xie
authors.forename: Xiao
authors.initials: X
authors.lastname: Yang
authors.forename: Dahui
authors.initials: D
authors.lastname: Zhao