Efficient deep-blue electroluminescent devices based on a novel β-diketone zinc complex

作者：Liu, Jian^*; Li, Han-Lin; Ma, Dong-Ge; Gong, Yong-Yang; Jiang, Min-Hua; Li, Shui-Gen; Jin, Bai

来源：Inorganica Chimica Acta, 2022, 542: 121134.

DOI：10.1016/j.ica.2022.121134

• Zinc complex
• beta-Diketone ligand
• Deep-blue electroluminescence

A novel zinc complex Zn(PhCzKt)2 with beta-diketone unit as chelating group was synthesized, where PhCzKt is dehydrogenation 1-(4-(tert-butyl) phenyl)-3-(9-ethyl-9H-carbazol-3-yl) propane-1,3-dione. Its structure was characterized by 1H NMR, MS and EA. Its UV-vis, PL, thermal stability, and electrochemistry were studied. The luminescent mechanism was also explored by calculations of DFT (density functional theory) and time -dependent DFT. Zn(PhCzKt)2-based electroluminescent devices were manufactured by using evaporation tech-nique. The devices present efficient luminescence with maximum EQE of 1.54 %, and the CIE(x,y)1931 of the EL spectrum is(0.1558, 0.0901), displaying a deep-blue emission.

• 单位
  常州大学; 桂林理工大学