The electrooxidation of 2-naphthol in phosphate buffer at pH 7 leads to the formation of a non-conducting polymer of poly(2-naphthol) on a platinum electrode. Such a resulting thin film displays an interesting permselective behaviour, which proved useful in minimising the interference of ascorbate, acetaminophen, cysteine and urate sample molecules. Electrochemical detection in flowing streams was used to investigate the relevance of permselectivity for sensor development. Non-conducting poly(2-naphthol) film demonstrated useful also as a novel permselective membrane for glucose oxidase immobilization. The glucose response time, t0.95, evaluated in batch addition experiments, was lower than 4s. The calibration curve was linear up to 15 mM of glucose with a sensitivity of 2.2 nA/mM.

Permselective behaviour of an electrosynthesized, non-conducting thin film of poly(2-naphthol) and its application to enzyme immobilization

CIRIELLO, Rosanna;GUERRIERI, Antonio
2000-01-01

Abstract

The electrooxidation of 2-naphthol in phosphate buffer at pH 7 leads to the formation of a non-conducting polymer of poly(2-naphthol) on a platinum electrode. Such a resulting thin film displays an interesting permselective behaviour, which proved useful in minimising the interference of ascorbate, acetaminophen, cysteine and urate sample molecules. Electrochemical detection in flowing streams was used to investigate the relevance of permselectivity for sensor development. Non-conducting poly(2-naphthol) film demonstrated useful also as a novel permselective membrane for glucose oxidase immobilization. The glucose response time, t0.95, evaluated in batch addition experiments, was lower than 4s. The calibration curve was linear up to 15 mM of glucose with a sensitivity of 2.2 nA/mM.
2000
File in questo prodotto:
File Dimensione Formato  
55670_UPLOAD.pdf

accesso aperto

Tipologia: Documento in Post-print
Licenza: DRM non definito
Dimensione 166.88 kB
Formato Adobe PDF
166.88 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11563/16615
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 30
  • ???jsp.display-item.citation.isi??? 30
social impact