Orange phosphorescent organic light-emitting diodes using new spiro[benzoanthracene-fluorene]-type host materials

New All‐Fused Ring Spiro Blue Host and Dopant System: Application in Sky‐Blue Fluorescent Organic Light‐Emitting Materials

“…In addition, the unique structure of highly conjugated spiro molecules allows their optical and electrochemical properties to be delicately tuned over a wide range through appropriate chemical modification to their aromatic moieties . Our study was extended to include a wider variety of fused ring spiro molecules, and spiro[benzo[ ij ]anthracene‐7,9′‐fluorene] ( SBAF ) and spiro[benzo[ ij ]tetraphene‐7,9′‐fluorene] ( SBTF ) units were introduced in blue OLEDs to improve their morphologic stability to achieve a highly efficient blue light emission.…”

Saturated deep-blue emitter based on a spiro[benzoanthracene–fluorene]-linked phenanthrene derivative for non-doped organic light-emitting diodes

“…18,19 Asymmetrical spiro[benzoanthracene-fluorene] derivatives possessing a naphthalene group are one kind of spiro compound which have recently been used in OLEDs. 20 Gong et al introduced spiro[benzoanthracene-fluorene]/carbazole compounds as host materials for orange phosphorescent OLEDs with twisted structures in 2012. 20 Subsequently, Kim et al reported a series of novel spiro[benzoanthracene-fluorene] derivatives as host materials and obtained sky-blue fluorescent emissions.…”

Modular Assembly of Spirocarbocyclic Scaffolds through Pd0‐Catalyzed Intermolecular Dearomatizing [2+2+1] Annulation of Bromonaphthols with Aryl Iodides and Alkynes

“…The potential utility of our method is illustrated by the one-step construction of the polycyclic skeletons of dalesconols Aa nd Bf rom alkyne-tethered aryl iodides and 1-bromo-2-naphthol.Spirocyclicframeworks are commonly occurring structural motifs in many bioactive compounds [1] and have been used as core building blocks for awide range of functional materials [2] and chiral ligands. The potential utility of our method is illustrated by the one-step construction of the polycyclic skeletons of dalesconols Aa nd Bf rom alkyne-tethered aryl iodides and 1-bromo-2-naphthol.…”

“…Spirocyclicframeworks are commonly occurring structural motifs in many bioactive compounds [1] and have been used as core building blocks for awide range of functional materials [2] and chiral ligands. [3] Transition-metal-catalyzed dearomatization of aromatic systems,w hich offers unusual strategic disconnections,h ave proven to be ap owerful tool for accessing av ariety of challenging but synthetically valuable spirocyclic molecules.…”