Applied Biochemistry and Biotechnology

, Volume 162, Issue 4, pp 927–934 | Cite as

Enzymatic Synthesis of Semiconductor Polymers by Chloroperoxidase of Caldariomyces fumago

  • Adriana M. Longoria
  • Hailin Hu
  • Rafael Vazquez-Duhalt


Among intrinsically conducting polymers, polyaniline is traditionally synthesized by chemical or electrochemical methods. Recently enzymatic synthesis of conducting polymers has been explored. In this work, polymers were synthesized using chloroperoxidase from Caldariomyces fumago and substituted anilines such as 2,6-dimethylaniline, 2,6-dichloroaniline, and 2,3,5,6-tetrachloroaniline (TCA), in order to promote a linear polymerization. These polymers were doped with (1S)-(+)-10-camphorsulfonic acid, dodecylbenzenesulfonic acid, and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPSA) with molar ratios of 1:0.25 and 1:0.5. Doped polymers showed conductivity corresponding to the semiconductors. TCA polymer doped with AMPSA showed the higher conductivity values. Different AMPSA concentrations have been tested, and the highest conductivity value of 1.6 × 10−2 S•m−1 was obtained for the complex with molar ratio of 1:0.5. This value is similar to those found with other substituted anilines with sulfonic groups. In addition, the enzymatically synthesized polymeric film showed combined transparency and semiconducting properties.


Chloroperoxidase Intrinsically conducting polymers Substituted anilines Transparent semiconductor 


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Copyright information

© Humana Press 2009

Authors and Affiliations

  • Adriana M. Longoria
    • 1
  • Hailin Hu
    • 2
  • Rafael Vazquez-Duhalt
    • 1
  1. 1.Instituto de BiotecnologíaUniversidad Nacional Autónoma de MéxicoCuernavacaMexico
  2. 2.Centro de Investigación en EnergíaUniversidad Nacional Autónoma de MéxicoTemixcoMexico

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