Enzymatic synthesis of colloidal polyaniline particles

Cruz-Silva, Rodolfo; Ruiz-Flores, C.; Arizmendi, Layza; Romero‐García, Jorge; Arias, Eduardo; Moggio, Ivana; Castillón, F. F.; Farı́as, M.H.

doi:10.1016/j.polymer.2005.12.082

Cited by 56 publications

(27 citation statements)

References 32 publications

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“…Indeed, the synthesis of insoluble conducting polymers in the form of colloids is an interesting approach to overcome some processability problems, such as lack of solubility and infusibility. We have previously shown that enzymatic oxidation is well suited for the aniline polymerization in dispersed media [14,36]. In the case of PPy, the addition of PVAL as steric stabilizer during the biocatalytic synthesis resulted in a PPy dispersion with high colloidal stability.…”

Section: Polypyrrole Thin Films and Colloidsmentioning

confidence: 99%

Biocatalytic synthesis of polypyrrole powder, colloids, and films using horseradish peroxidase

Cruz-Silva

Amaro

Escamilla³

et al. 2008

Journal of Colloid and Interface Science

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Section: Polypyrrole Thin Films and Colloidsmentioning

confidence: 99%

Biocatalytic synthesis of polypyrrole powder, colloids, and films using horseradish peroxidase

Cruz-Silva

Amaro

Escamilla³

et al. 2008

Journal of Colloid and Interface Science

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“…SBP has better stability and activity than HRP in acidic pHs, and therefore was used here for higher yield. [28][29][30] The dithiol bond in DTSSP was used to form SAMs on the Au electrode. The succinimide group reacts with the primary amine of SBP to form covalent bonds.…”

Section: Resultsmentioning

confidence: 99%

Application of Polyaniline to an Enzyme-Amplified Electrochemical Immunosensor as an Electroactive Report Molecule

Kwon¹,

Seo²,

Yang³

et al. 2010

Bulletin of the Korean Chemical Society

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Conducting polymers (CPs) are widely used as matrixes for the entrapment of enzymes in analytical chemistry and biosensing devices. However, enzyme-catalyzed polymerization of CPs is rarely used for immunosensing due to the difficulties involved in the quantitative analysis of colloidal CPs in solution phase. In this study, an enzyme-amplified electrocatalytic immunosensor employing a CP as a redox marker has been developed. A polyanionic polymer matrix, α-amino-ω-thiol terminated poly(acrylic acid), was employed for precipitation of CP. The acrylic acid group acts as a polyanionic template. The thiol terminus of the polymer was used to produce self-assembled monolayers (SAMs) on Au electrodes and the amine terminus was employed for immobilization of biomolecules. In an enzymeamplified sandwich type immunosensor, the polyaniline (PANI) produced enzymatically is attracted by the electrostatic force of the matrix polymer. The precipitated PANI was characterized by electrochemical methods.

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“…The stability of the dispersions arises from static repulsion between the stabilizer molecules, leading to the formation of colloids. For instance, stabilized PANI colloids prepared by the enzymatic polymerization of aniline in dispersed media [94], and PANI colloids (50-350 nm in diameter) prepared by enzymatic polymerization using chitosan and poly (N-isopropylacrylamide) as steric stabilizers [95], have been also reported.…”

Section: Other Soft-templatesmentioning

confidence: 99%