Soluble and stable zethrenebis(dicarboximide) and its quinone.
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.
Sun
Zhe
Z
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore.
Huang
Kuo-Wei
KW
Wu
Jishan
J