Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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A Benzodithiophene-based Semiconducting Polymer for Organic Thin Film Transistor

  • Hong, Jung-A (School of Material Science & Engineering and ERI, Gyeongsang National University) ;
  • Kim, Ran (Department of Chemistry and RINS, Gyeongsang National University) ;
  • Yun, Hui-Jun (School of Material Science & Engineering and ERI, Gyeongsang National University) ;
  • Park, Joung-Man (School of Material Science & Engineering and ERI, Gyeongsang National University) ;
  • Shin, Sung Chul (Department of Chemistry and RINS, Gyeongsang National University) ;
  • Kim, Yun-Hi (Department of Chemistry and RINS, Gyeongsang National University)
  • Received : 2012.12.28
  • Accepted : 2013.01.24
  • Published : 2013.04.20
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Abstract

Benzodithiophene based organic semiconducting polymer was designed and synthesized by stille coupling reaction. The structure of polymer was confirmed by NMR and IR. The weight average molecular weight ($M_w$) of polymer was 8,400 using GPC with polydispersity index of 1.4. The thermal, optical and electrochemical properties of polymer were characterized by TGA and DSC, UV-vis absorption and cyclic voltammetry. OTFT device using PBDT-10 exhibited the mobility of $7.2{\times}10^{-5}\;cm^2\;V^{-1}\;s^{-1}$ and $I_{on}/I_{off}$ of $2.41{\times}10^3$. The film morphology and crystallinity of PBDT-10, was studied using AFM and XRD.

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References

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