Blue-Light-Emitting Polymers with A Defined Conjugation Length: Effect of Diimide Unit

  • Ree, Moon-Hor (Department of Chemistry and Polymer Research Institute, Pohang University of Science and Technology) ;
  • Park, Hong-Ki (Department of Chemistry and Polymer Research Institute, Pohang University of Science and Technology) ;
  • Kim, Jae-Jung (Department of Chemistry and Polymer Research Institute, Pohang University of Science and Technology) ;
  • Ahn, Hung-Keun (Department of Chemistry and Polymer Research Institute, Pohang University of Science and Technology)
  • Published : 2000.01.13

Abstract

New light-emitting polyimides were synthesized from the conventional polycondensation of 5,5'-bis(4-aminophenyl)-2,2'bifuryl (PFDA) with fluorinated and non-fluorinated aromatic dianhydrides, providing a good quality of thin films: 6F-PFDA PI and ODPA-PFDA PI. Their UV-visible absorbance and photoluminescent characteristics were investigated. The polymers emit blue and blue-greenish light in a quantum yield of 7.3-14.9%, depending on the polymer backbone.

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