Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (4): 792.

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Effect of Cu2+ on the Optical Properties of Poly(3-hexylthiophene) in Different Phases

ZHU Jun1, PENG Rui-Xiang1, WANG Ming-Tai1,2*   

    1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China;
    2. Department of Materials Science and Engineering, Anhui Institute of Architecture & Industry, Hefei 230022, China
  • Received:2008-11-17 Online:2009-04-10 Published:2009-04-10
  • Contact: WANG Ming-Tai, E-mail:mtwang@ipp.ac.cn

Abstract:

The interactions between Cu2+ and poly(3-hexylthiophene)(P3HT) in three different phases(dilute solution, dispersive solution and film), were investigated with UV-Vis absorption spectroscopy and photoluminescence spectroscopy. Our results indicate that the phase state of P3HT has a remarkable influence on the interactions. In the dilute THF solution, there is almost no chemical interaction between Cu2+ and P3HT due to the high degrees of solvation of both them, while in the dispersive solution, the Cu2+ partially enters into the dispersive particles and leads to weak oxidative doping of P3HT. In P3HT films, the presence of Cu2+ makes the conjugation length of P3HT become shorter and causes a blue-shift in the absorption spectroscopy.

Key words: Poly(3-hexylthiophene), Copper ion, Optical property

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