Synthesis, optical and electrochemical characterization of anthrancene and benzothiadiazole-containing polyfluorene copolymers

  • Shimelis Admassie Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
  • Zekarias Yacob Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
  • Fengling Zhang Department of Physics, Linkoping University, SE-581 83, Linkoping, Sweden
  • Wendimagegn Mammo Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
  • Teketel Yohannes Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
  • Theodros Solomon Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
DOI: 10.4314/bcse.v20i2.61416
Keywords: Anthracene, Benzothiadiazole, Polyfluorene copolymers, Photoluminescence, Light emitting diode

Abstract

New solution-processable, anthrancene- and benzothiadiazole-containing polyfluorene copolymers (P1-P3) have been synthesized and characterized. The preparation and characterization of the corresponding blue light-emitting devices are also reported. Polymers P2 and P3 show high photoluminescence efficiency while polymer P2 does not show any significant light emission up to 8.0 V. The results show the need for balance of electron and hole transport in polymer light emitting diodes.

 

KEY WORDS: Anthracene, Benzothiadiazole, Polyfluorene copolymers, Photoluminescence, Light emitting diode

 

 

Bull. Chem. Soc. Ethiop. 2006, 20(2), 309-317.

Issue
Vol. 20 No. 2 (2006)
Section
Articles

Journal Identifiers


eISSN: 1726-801X
print ISSN: 1011-3924