title: Molecular design of novel non-planar heteropolycyclic fluorophores with bulky substituents: convenient synthesis and solid-state fluorescence characterization.
abstract: Novel indeno[1,2-b]benzo[4,5-e]pyran-11-one-type fluorophores exhibiting intense solid-state fluorescence were conveniently synthesized and the relation between their solid-state photophysical properties and the X-ray crystal structures were investigated, which demonstrates that non-planar structures with sterical hindered substituents prevent the fluorophores from forming short pi-pi contacts causing fluorescence quenching in the solid state.
authors.affiliation: Department of Material Science, Faculty of Science, Kochi University, Akebono-cho, Kochi 780-8520, Japan.
authors.forename: Yousuke
authors.initials: Y
authors.lastname: Ooyama
authors.forename: Shintaro
authors.initials: S
authors.lastname: Yoshikawa
authors.forename: Shigeru
authors.initials: S
authors.lastname: Watanabe
authors.forename: Katsuhira
authors.initials: K
authors.lastname: Yoshida