Biosensors based on gold nanoelectrode ensembles and screen printed electrodes

Walter Vastarella, Livia Della Seta, Amedeo Masci, Jan Maly, Manuela De Leo, Ligia Maria Moretto, Roberto Pilloton

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Gold nanowires were synthesized within polycarbonate membranes according to an electroless deposition method, obtaining nanoelectrode ensembles (NEEs) with special electrochemical features. NEEs were coupled with home-produced carbon graphite screen printed electrodes and the electrochemical properties of the original nanoelectrode ensemble on screen printed substrate (NEE/SPS) assembly has been tested for sensors application. Glucose oxidase has been used as model enzyme in order to verify the feasibility of disposable gold NEE/SPS biosensors. Finally, different immobilisation and electrochemical deposition techniques based on either self assembled monolayers of cysteamine (CYS) or amino-propyl-triethoxysilane (APTES) and conductive polyaniline (PANI) molecular wires were used. Spatial patterning of the enzyme on the polycarbonate surface and of PANI wires on gold nanoelectrodes was obtained. Possible direct electron transfer between the enzyme and the PANI modified gold nanoelectrodes has been evaluated. © 2007 Taylor & Francis.
Original languageEnglish
Pages (from-to)701 - 714
Number of pages14
JournalInternational Journal of Environmental Analytical Chemistry
Volume87
Issue number10-11
DOIs
Publication statusPublished - Aug 2007

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Environmental Science(all)
  • Environmental Chemistry

Cite this