title: One-pot synthesis of coumarin-based oxazabicyclic and oxazatricyclic compounds and their fluorescence redox switching properties.
abstract: An oxazabicycle and an oxazatricycle were efficiently synthesized by coupling of coumarins and N-alkylquinolium or isoquinolium salt to investigate their fluorescence redox-switching properties. Chemical reduction of the strongly fluorescent oxazabicycle and oxazatricycle results in the ring-opened products with a distinct decrease in emission intensity. Both resulting ring-opened species can be swiftly reverted to the original ring-closed forms by oxidation.
authors.affiliation: Department of Chemistry, Tunghai University, 181 Taichung-Kang Road Sec.3, Taichung 407, Taiwan.
authors.forename: Chi-Hui
authors.initials: CH
authors.lastname: Lin
authors.forename: Jing-Fu
authors.initials: JF
authors.lastname: Jhang
authors.forename: Ding-Yah
authors.initials: DY
authors.lastname: Yang