title: Soluble and stable zethrenebis(dicarboximide) and its quinone.
abstract: Soluble and stable zethrenebis(dicarboximide) (1) was synthesized by an in situ Stille cross coupling/transannular cyclization reaction. 1 showed largely improved photostability and solubility compared with the very unstable zethrene and it also exhibited far-red absorption and emission with high photoluminescence quantum yield. Bromination of 1 with NBS/DMF gave its quinone form 2 via an unusual pathway.
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore.
authors.forename: Zhe
authors.initials: Z
authors.lastname: Sun
authors.forename: Kuo-Wei
authors.initials: KW
authors.lastname: Huang
authors.forename: Jishan
authors.initials: J
authors.lastname: Wu