No abstract

α(β)-tetra-(methoxy-phenoxy)-zinc phthalocyanine are synthesized by employing 3(4)nitrobenzene-1,2-dicarbonitrile as precursors. They are characterized by spectrum methods and elemental analysis. The UV-Vis spectrum, photoluminescence spectra of spin-coated film and solid pellet are compared. The electroluminescent devices are fabricated by using spin coating. The results indicate that the fluorescence of solid phthalocyanine has a red-shift of more than 145 nm compared to that in solution. The fluorescences are broader in solid state than that in solution. The fluorescence of β-substituted phthalcyanines has a more red-shift than α-substituted phthalcyanines. The electroluminescent spectra around 856 and 862 nm are consisted with the photoluminescence spectra of spin-coated film. The shorter inter-molecule space leads to the large red-shift of the fluorescence.

We demonstrate the near-infrared (NIR) organic light-emitting devices (OLEDs) based on copper hexadecafluorophthalocyanine (CuPcF16) doped into 2,2,2"-(1,3,5-benzenetriyl)tris-[1-phenyl-1H-benzimidazole] (TPBI). The device structure is ITO/ NPB/ TPBI:CuPcF16/BCP/Alq3/Al. Room-temperature electroluminescence is observed at about 1106 nm due to transitions from the first excited triplet state to the ground state (T1-S0) of CuPcF16. The result indicates that Förster and Dexter energy transfers play a minor role in these devices, while the direct charge trapping is the dominant mechanism. The absorption spectra of CuPcF16 solution in pyridine and vacuum sublimed films on quartz have also been investigated.

光器件， 研究了它们的电致发光光谱性质。Ｓ ｃ ｈ ｅ ｍｅ１ Ｍｏ ｌ ｅ ｃ ｕ ｌ ａ ｒ ｓ ｔ ｒ ｕ ｃ ｔ ｕ ｒ ｅ ｓｏ ｆ α  ｔ ｅ ｔ ｒ ａ  Ｐ Ｐ ｃ Ｚ ｎａ ｎ ｄβ  ｔ ｅ ｔ ｒ ａ  Ｐ Ｐ ｃ Ｚ ｎ