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• W2005029376 abstract "N-(3-Aminopropyl)pyrrole was covalently coupled with alginate in an aqueous-phase reaction by means of carbodiimide-mediated activation chemistry to provide a pyrrole−alginate conjugate for subsequent use in biosensor applications. The pyrrole−alginate conjugate was quantified by UV spectroscopy at 230 nm, by an HPSEC-MALLS analytical method, as well as by FTIR and 13C NMR spectroscopies. The new pyrrole−alginate conjugate was used for the immobilization of polyphenol oxidase (PPO) onto an electrode surface by physical entrapment resulting from the gellification process and electrochemical polymerization of the pyrrole groups. The efficiency of this cross-linking approach (chemical and electrochemical) was investigated by comparing the amount of enzyme released from polypyrrole−alginate and regular alginate. In addition, biosensors were prepared by entrapment of the PPO in polypyrrole−alginate and regular alginate matrixes and their performance for the amperometric determination of catechol chosen as a model analyte was examined, yielding a sensitivity of 350 and 80 μA M-1 cm-2, respectively, for polypyrrole−alginate and alginate biosensors." @default.
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• W2005029376 date "2005-09-24" @default.
• W2005029376 modified "2023-10-12" @default.
• W2005029376 title "Synthesis and Characterization of a Pyrrole−Alginate Conjugate and Its Application in a Biosensor Construction" @default.
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• W2005029376 doi "https://doi.org/10.1021/bm050339j" @default.
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