Novel NO biosensor based on the surface derivatization of GaAs by "hinged" iron porphyrins

Deng Guo Wu, Gonen Ashkenasy, Dmitry Shvarts, Rachel V. Ussyshkin, Ron Naaman, Abraham Shanzer, David Cahen

Research output: Contribution to journalArticlepeer-review

56 Scopus citations

Abstract

A tailor-made, two-component molecular system bound to a GaAs based electronic device has been used to detect nitric oxide (NO) in physiological buffer solutions down to a concentration of 1 ppm (ca. 3 μM). This is made possible because the current through the GaAs changes when NO binds to an iron(III) porphyrin (see picture).

Original languageEnglish
Pages (from-to)4496-4500
Number of pages5
JournalAngewandte Chemie - International Edition
Volume39
Issue number24
DOIs
StatePublished - 15 Dec 2000
Externally publishedYes

Keywords

  • Biosensors
  • Nitrogen oxides
  • Porphyrinoids
  • Surface chemistry

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry

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