Aromatic polyethers containing distyrylbenzene and 1,3,4-oxadiazole chromophores: Synthesis and electrochemical properties

Yun Chen, Chih Feng Huang

研究成果: Article同行評審

13 引文 斯高帕斯(Scopus)

摘要

New aromatic polyethers (P1, P2) containing both electron transporting 1,3,4-oxadiazole and emitting distyrylbenzene chromophores were prepared from 2,5-bis(4-fluorophenyl)-1,3,4-oxadiazole and aromatic dialdehydes by Horner-Wadsworth-Emmons reaction. Saturated aliphatic segment was also introduced to main chain to improve the solubility of the polyethers (P3, P4). The reduced viscosities are between 0.23 and 0.42dl/g. They are amorphous and thermally stable up to 300°C. In film state, their absorption maxima are in the range of 300-362nm, while the photoluminescence maxima are within 467-488nm (blue-green). From cyclic voltammetric and optical investigations, the HOMO and LUMO levels of P1-P4 are estimated to be 5.38-5.47 and 2.55-2.64eV, respectively. The HOMO levels are greater than PPV (5.1eV), while the LUMO levels are similar to PPV (2.6eV). Charge injection balance can be improved (compared with PPV) since the difference between barrier heights of anode and cathode is narrowed down.

原文English
頁(從 - 到)379-387
頁數9
期刊Synthetic Metals
125
發行號3
DOIs
出版狀態Published - 2001 12月 20

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學
  • 材料力學
  • 機械工業
  • 金屬和合金
  • 材料化學

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