화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.24, No.4, 342-349, April, 2016
DOI10.1007/s13233-016-4054-0  Export Citation
Structure and properties of conducting poly(o-phenylenediamine) synthesized in different inorganic acid medium
Siddhartha Samanta, Poulomi Roy, and Pradip Kar†
  • Department of Chemistry, Birla Institute of Technology, Mesra, Ranchi, 835215, Jharkhand, India
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Poly(o-phenylenediamine) was chemically synthesized from the monomer o-phenylenediamine in various inorganic acid medium, viz., hydrochloric (HCl), sulphuric (H2SO4) and phosphoric acid (H3PO4) to investigate the differences in structures and properties of the synthesized polymers. From the various characterizations, it was confirmed that the ladder type polymer with some open ring structure was formed in HCl medium while open ring type amine derivative of polyaniline structure was obtained in H2SO4 medium and the ladder type dimer was formed in H3PO4 medium. The structural differences of the polymers were correlated with the polymerization mechanism in different acid medium. Thus, the polymer synthesized in H2SO4 was well soluble in polar organic solvent like dimethyl sulfoxide (DMSO), N,N-dimethyl formamide, tetrahydrofuran etc. and casting of freestanding film was possible from DMSO solution. The highest average DC conductivity of H2SO4 doped polymer synthesized in H2SO4 medium was observed as 7.14×10-4 S/cm. The conductivity and doping properties of the polymer were explained here from the proper characterizations.
Keywords:poly(o-phenylenediamine);conjugated polymer;doping;conducting polymer;polyaniline derivative
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