One‐Step Borylation of 1,3‐Diaryloxybenzenes Towards Efficient Materials for Organic Light‐Emitting Diodes

• DOI: 10.1002/ange.201506335
• Publication Date: 2015-09-18T11:08:36Z
• Authors: Hiroki Hirai; Kiichi Nakajima; Soichiro Nakatsuka; Kazushi Shiren; Jingping Ni; Shintaro Nomura; Toshiaki Ikuta; Takuji Hatakeyama
• Keywords: Borylation; BODIPY; Helicene

Abstract The development of a one‐step borylation 1,3‐diaryloxybenzenes, yielding novel boron‐containing polycyclic aromatic compounds, is reported. resulting compounds possess high singlet‐triplet excitation energies as result localized frontier molecular orbitals induced by boron and oxygen. Using these host material, we successfully prepared phosphorescent organic light‐emitting diodes exhibiting efficiency adequate lifetimes. Moreover, using the present borylation, succeeded in synthesis an efficient, thermally activated delayed fluorescence emitter boron‐fused benzo[6]helicene.