Preparation and Electrical Properties of Conductive Polyaniline Langmuir-Blodgett Thin Films Doped by Various Dopants

여러가지 도판트에 의해 도핑된 전도성 폴리아닐린 LB 박막의 제조 및 전기적 성질

  • 오세용 (서강대학교 공과대학 화학공학과) ;
  • 오병근 (서강대학교 공과대학 화학공학과) ;
  • 최정우 (서강대학교 공과대학 화학공학과) ;
  • 김형수 (단국대학교 공과대학 화학공학과) ;
  • 이희우 (서강대학교 공과대학 화학공학과) ;
  • 이원홍 (서강대학교 공과대학 화학공학과)
  • Received : 1996.08.07
  • Accepted : 1997.02.24
  • Published : 1997.04.10

Abstract

Polyaniline(PANI)-stearic acid(SA) composite monolayer was formed at the air-water interface. The stearic acid as a surfactant was used to promote PANI monolayer formation. Uniform PANI-SA monolayer assemblies with Y type and transfer ratio of ca. 1 were fabricated using the Langmuir-Blodgett(LB) technique. The PANI-SA composite LB films with high electrical conductivity of $10^{-1}{\sim}10^{-2}S/cm$ were obtained by doping of HCl or $I_2$, and their conductivity revealed essentially close value as that of conventional PAHI-HCl complex. Especially, iodine is found to be the most promising dopant, since it gives a remarkable stability for the application as a polymer electrode in the MIM molecular device consisted of acceptor, sensitizer, and donor. The structure and physical properties of PANI-SA LB films were investigated through the near-ir UV, FT-IR, and Cyclic voltammetry.

Keywords

Acknowledgement

Supported by : 서강대학교

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