Laccase-catalyzed oxidative polymerization of aniline dimer (N-phenyl-1,4-phenylenediamine) in aqueous micellar solution of sodium dodecylbenzenesulfonate
| Autor: | Alexander Streltsov, I. S. Vasil’eva, Olga Morozova, Grigory Otrokhov, Elena Gorshina, Victoria Kurova, Alexander I. Yaropolov, Galina Shumakovich, Tatyana Rusinova |
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| Rok vydání: | 2011 |
| Předmět: |
Aqueous solution
biology Process Chemistry and Technology Dimer Sodium dodecylbenzenesulfonate technology industry and agriculture Bioengineering Trametes hirsuta Photochemistry biology.organism_classification Biochemistry Catalysis chemistry.chemical_compound Aniline chemistry Polymerization Polyaniline Polymer chemistry Fourier transform infrared spectroscopy |
| Zdroj: | Journal of Molecular Catalysis B: Enzymatic. 69:83-88 |
| ISSN: | 1381-1177 |
| DOI: | 10.1016/j.molcatb.2011.01.016 |
| Popis: | We have studied oxidative polymerization of aniline dimer (N-phenyl-1,4-phenylenediamine) catalyzed by high-redox potential laccase isolated from the fungi Trametes hirsuta ( Wulfen ) Pilat CF-28. Enzymatic aniline dimer polymerization was performed in aqueous micellar solution of sodium dodecylbenzenesulfonate, the atmospheric oxygen serving as an oxidizer. The resultant dispersion was stable for at least 6 months. The products synthesized were characterized using Fourier transform infrared and UV–vis spectroscopies. MALDI TOF analysis has shown that aniline dimers polymerize to mainly form aniline oligomers with the m/z ratio up to 2180, which corresponds to a polymerization degree of 24 (in terms of aniline subunits). Enzymatically formed aniline oligomers consist for the most part of para-directed units in the form of emeraldine salt. The end product structure depends on the reaction medium pH. Transmission electron microscopy has revealed granular nanoparticles of the reaction product. |
| Databáze: | OpenAIRE |
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