Non-dopant electroluminescent devices based on benzoxazinone derivative as strong fluorescence in solid film

摘要

The orange fluorescent compound 2-[2-(p-toluenesulphonylamino)-5-chlorophenyl]-6-chloro-4H-3,l-benzoxazin-4-one (Cl-TSB) was synthesized by reacting 2-amino-5-chlorobenzoic acid with ?-toluenesulphonyl chloride. The strong photoluminescent peak was at 544 nm in solid film. HOMO and LUMO energy levels were calculated -5.00 and -1.82 eV. The multilayer organic light-emitting devices (OLEDs) ITO/NPB/Cl-TSB/BCP/TPBi or Alq_3/LiF/Al were fabricated. The electroluminescent peaks of all devices were at ca. 620 nm with luminance of over 100 cd/m~2. The characteristics of devices demonstrated that Cl-TSB was an orange emitter suitable for OLED.