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 π–π contacts causing fluorescence quenching in the solid state.
新型的 indeno[1,2-b]benzo[4,5-e]pyran-11-one 型荧光
染料表现出强烈的固态荧光,且合成方法简便。同时研究了它们的固态光物理性质与 X 射线晶体结构之间的关系,结果表明,具有空间位阻的非平面结构能够阻止荧光
染料形成短的 π–π 接触,从而导致固态下的荧光猝灭。