Laccase-catalyzed synthesis of conducting polyaniline

Karamyshev, Alexey V; Shleev, Sergey; Королева, О. В.; Yaropolov, A. I.; Sakharov, Ivan Yu.

doi:10.1016/s0141-0229(03)00163-7

Cited by 139 publications

(85 citation statements)

References 35 publications

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“…In the absence of a suitable template aniline polymerizes with poor regioselectivity yielding complex, insoluble and non conducting polymers. However, e.g., in the presence of negatively charged PSS (and in the presence of protonated aniline, i.e., at suitable pHs) formation of the conducting emeraldine form is strongly favored (Figure 12) [27,[73][74][75][76][77][78][79].…”

Section: Templatesmentioning

confidence: 99%

Enzyme Initiated Radical Polymerizations

2012

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Section: Templatesmentioning

confidence: 99%

Enzyme Initiated Radical Polymerizations

2012

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“…It is also mentioned that laccase induced radical polymerization of acrylamide with or without mediator [243,244]. Laccases are also known to polymerize various amino and phenolic compounds [245][246][247][248]. Recently, to improve the production of fuel ethanol from renewable raw materials, laccase from T. versicolor was expressed in S.…”

Section: Organic Synthesismentioning

confidence: 99%

Laccases and Their Applications: A Patent Review

Kunamneni

Plou²,

Ballesteros³

et al. 2008

BIOT

276

172

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Abstract:Laccases are an interesting group of multi copper enzymes, which have received much attention of researchers in last decades due to their ability to oxidize both phenolic and non-phenolic lignin related compounds as well as highly recalcitrant environmental pollutants. This makes these biocatalysts very useful for their application in several biotechnological processes. Such applications include the detoxification of industrial effluents, mostly from the paper and pulp, textile and petrochemical industries, polymer synthesis, bioremediation of contaminated soils, wine and beverage stabilization. Laccases are also used as catalysts for the manufacture of anti-cancer drugs and even as ingredients in cosmetics. Recently, the utility of laccases has also been applied to nanobiotechnology. This paper reviews recent and important patents related to the properties, heterologous production, molecular cloning, and applications of laccases within different industrial fields as well as their potential extension to the nanobiotechnology area.

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“…Unfortunately, HRP shows low activity toward aniline and low stability at pH below 4.5, i e, at the same pH interval where the polyelectrolyte complex between PANI (pKa of aniline is 4.63) and negatively charged polymeric templates may be formed, as well as natural enzyme is expensive. For improvement of the enzymatic synthesis, Sakharov et al reported the enzymes laccase and palm tree peroxidase used for synthesis of polyelectrolyte complex of PANI and sulfonated polystyrene (SPS) at pH of 3.5 [2][3][4] . Although laccase and palm tree peroxidase are promising biocatalytic approaches to the synthesis of PANI, it is required to develop a cost-effective, cheaper, more robust and stability mimetic enzyme catalyst alternative for peroxidase in these reactions.…”

Section: Introductionmentioning

confidence: 99%

Hemoglobin-biocatalyzed synthesis of conducting molecular complex of polyaniline and lignosulfonate

Liu

Zhao

et al. 2008

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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A new biocatalyst route for the synthesis of a conducting polyaniline (PANI)/ lignosulfonate (LGS) complex was presented. Four different catalysts such as hemoglobin (Hb), 5, 10, 15, 20-tetrakis (meso-hydroxyphenyl) porphyrin, iron (II) tetrasulfophthalocyanine and ferric chloride were used to polymerize aniline in the presence of a natural polyelectrolytes template LGS. The experimental results show that Hb is an effective catalyst in this case and the synthesis is simple, and the conditions are mild in that the polymerization may be carried out in lower pH (1.0-4.0) buffered solution and optimal pH of 2.0. Varying concentrations of aniline, LGS and H 2 O 2 in feed the favorable conditions for the production of PANI were determined. UV-vis absorption, FTIR, elemental analysis, conductivity, cyclic voltammetry and thermogravimetric analyses confirm the formation of thermally stable and electroactive PANI.

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Laccase-catalyzed synthesis of conducting polyaniline

Cited by 139 publications

References 35 publications

Enzyme Initiated Radical Polymerizations

Enzyme Initiated Radical Polymerizations

Laccases and Their Applications: A Patent Review

Hemoglobin-biocatalyzed synthesis of conducting molecular complex of polyaniline and lignosulfonate

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