Effect of a perfluorocyclopentene core unit on the structures and photoluminescence of fluorene- and anthracene-based compounds

A series of fluorene- and anthracene-based compounds linked by perfluorocyclopentene core unit have been synthesized and characterized, and compounds 1 and 5 have been confirmed by X-ray single-crystal analysis. These compounds show a bright blue emission with high photoluminescence quantum efficiency.