Sol-gel-derived nanocrystalline gold-silicate composite biosensor

Subramanian Bharathi*, Ovadia Lev

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

67 Scopus citations

Abstract

A new class of sol-gel-derived electrochemical biosensors is introduced and demonstrated for glucose sensing. The electrode material comprises an interconnected dispersion of gold nanocrystals imbedded in a porous methyl silicate matrix. The gold nanoparticles provide electrocatalysis and electric conductivity; the methyl groups endow hydrophobicity and limit the active area of the exposed gold, thus decreasing the background current; the silicate provides a transparent and porous backbone; and the encapsulated glucose oxidase provides biocatalysis.

Original languageAmerican English
Pages (from-to)29-31
Number of pages3
JournalAnalytical Communications
Volume35
Issue number1
DOIs
StatePublished - 1998

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