Solid-state emissions of 4H-chromenones with simple structures: mechanochromism and polymer-based doped ultralong room-temperature phosphorescence

Abstract

A series of 4H-chromenones using triphenylamine (TPA) and 9-phenyl-9H-carbazole (Cz) as the electron-donating units are designed and synthesized, which have twisted molecular conformations and display dual-state emissions. Different from Cz-based...