Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Novel Electroluminescent Polymer Derived from Pyrene-Functionalized Polyaniline

  • Received : 2010.11.23
  • Accepted : 2011.03.02
  • Published : 2011.05.20
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Abstract

A solution processable polymer was synthesized, by incorporating pyrene groups into the backbone of the polyaniline chain, and used as an emissive layer in an organic light emitting diode. The polyaniline base was reacted with acid chloride of pyrene butyric acid to form pyrene-functionalized polyaniline chains. The source of pyrene moiety was acid chloride of pyrene butyric acid. The formation of polymer from acid chloride of pyrene butyric acid and polyaniline was confirmed by the FTIR and $^1H$-NMR spectroscopy. Differential scanning calorimetry revealed high glass transition temperature of 210 $^{\circ}C$. Due to the presence of pyrene moieties in the backbone, the polyaniline synthesized in the present study is solution processable with light emitting property. The photoluminescence spectrum of the polymer revealed that emission lies in the blue region, with a peak at 475 nm. The light emitting device of this polymer exhibits the turn-on voltage of 15 V.

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