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Multicolor Circularly Polarized Photoluminescence and Electroluminescence with 1,2-Diaminecyclohexane Enantiomers.

Xu-Feng LuoHua-Bo HanZhi-Ping YanZheng-Guang WuJian SuJian-Wei ZouZi-Qi ZhuYou-Xuan ZhengJing-Lin Zuo
Published in: ACS applied materials & interfaces (2020)
Development of simple chiral materials with tunable circularly polarized photoluminescence (CPPL) and circularly polarized electroluminescence (CPEL) for efficient circularly polarized organic light-emitting diodes (CP-OLEDs) is the key toward future 3D displays. In this study, four pairs of chiral 1,2-diaminocyclohexane-based fluorescence enantiomers were efficiently prepared with high yields (up to 92%) and enantiomeric excesses (ee >99%). By the introduction of N-methyl, carbazole, and diphenylamine-donating groups, these materials showed multicolor CPPL and CPEL from blue (420 nm) to red (610 nm) with good thermal and conformational stability. The multilayer CP-OLEDs based on these enantiomers show high external quantum efficiency of up to 5.5% with low-efficiency roll-off and microimage circularly polarized electroluminescence with a dissymmetry factor (gEL) of up to -1.4 × 10-3/+1.3 × 10-3. These results push forward the development of future multicolor circularly polarized electroluminescent materials.
Keyphrases
  • capillary electrophoresis
  • light emitting
  • energy transfer
  • flow cytometry
  • quantum dots
  • molecular dynamics
  • mass spectrometry
  • photodynamic therapy
  • single molecule
  • current status
  • molecular dynamics simulations