基于二苯甲酮框架的多功能有机发光材料

Multifunctional Organic Luminescent Materials Based on Benzophenone Frameworks

有机发光材料的光电性能与分子的化学结构、构象变化的灵活性以及分子间相互作用密切相关。从结构上看,二苯甲酮的羰基和苯环具有很高的可化学修饰性,本文从材料合成角度首先综述了近年来基于二苯甲酮框架的多功能有机发光材料的构建策略,主要包括多取代二苯甲酮、用杂原子作为桥连基团以及以C=C偶联和苯环为中心直接偶联等三种策略。已经基于此开发了多种多功能有机发光材料,主要包括荧光材料、贵金属磷光配合物的主体、热激活延迟荧光材料、聚集诱导发光材料和纯有机室温磷光材料等。最后,还展望了基于二苯甲酮框架的多功能有机发光材料未来的研究重点和发展前景。

The optoelectronic properties of organic luminescent materials are strongly correlated with the molecular structure,the flexibility of conformational change and the intermolecular interaction.From the perspective of structure,the carbonyl group and benzene ring of benzophenone have high chemical modifiability.In this paper,the chemical synthesis methods to produce multifunctional organic luminescent materials based on benzophenone framework in recent years are systematically reviewed,including three basic strategies:multiple substitution of benzophenone,using heteroatom as bridging group,vinyl coupling and direct coupling of benzene ring as the center.A variety of multifunctional organic luminescent materials based on this framework have been developed,including fluorescence materials,hosts of precious metal phosphorescence complex,thermally activated delayed fluorescence materials,aggregation-induced emission materials and pure organic room temperature phosphorescence materials.Finally,the development prospect of multi-functional organic luminescent materials based on benzophenone framework is prospected.