The European Physical Journal D

, Volume 50, Issue 1, pp 21–26 | Cite as

Low energy emission bands in a small molecular fluorene derivative for organic light-emitting diodes

  • S. L. LouEmail author
  • H.S. Yu
  • W. M. Ma
  • Y. Jiang
  • Q. Zhang
Molecular Physics and Chemical Physics


6,6-(9H-fluoren-9,9-diyl)bis(2,3-bis(9,9-dihexyl-9H-fluoren-2-yl)quinoxaline) (BFLBBFLYQ) was a novel small molecular fluorene material with fluorescence maxima at 450 nm in spin cast films. Compared to spin cast films, BFLBBFLYQ vacuum evaporated deposition films exhibited different photo-physical properties. The low energy emission bands from 530 to 570 nm were observed from the electroluminescence (EL) and photoluminescence (PL) spectra of BFLBBFLYQ films evaporated deposition in ultrahigh vacuum circumstance, and the origin of these emission features were investigated and discussed. Also, the emissive properties of BFLBBFLYQ spin cast films upon thermal annealing and under UV irradiation in air were characterized for the effect of thermal oxidization and photo-oxidization.


42.70.Jk Polymers and organics 78.66.Qn Polymers; organic compounds 79.60.Fr Polymers; organic compounds 81.65.Mq Oxidation 


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Copyright information

© Springer 2008

Authors and Affiliations

  • S. L. Lou
    • 1
    Email author
  • H.S. Yu
    • 1
  • W. M. Ma
    • 1
  • Y. Jiang
    • 1
  • Q. Zhang
    • 2
  1. 1.State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China (UESTC)ChengduP.R. China
  2. 2.Department of Polymer ScienceSchool of Chemistry and Chemical Technology, Shanghai Jiaotong UniversityShanghaiP.R. China

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