Chemically Sensitive Microelectrochemical Devices: New Approaches to Sensors
Abstract
Described herein are the proof of concept results demonstrating a new approach to electrochemical sensors based upon chemically sensitive microelectrochemical devices. A typical device consists of at least two individually addressable electrodes. The working electrode is a microelectrode and is derivatized with at least one molecule that has a chemically sensitive formal potential and serves as the indicator, and one molecule that has a chemically insensitive formal potential and serves as a reference. The indicator and reference molecules are confined to the electrodes either by monolayer self assembly techniques or by dissolving in a thin film of solid electrolyte. Detection in these systems is accomplished by measuring either the potential difference associated with current peaks for oxidation (or reduction) of microelectrode confined redox reagents.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 04, 1992
- Accession Number
- ADA245798
Entities
People
- C. A. Mirkin
- D. Ofer
- J. J. Hickman
- J. R. Valentine
- M. S. Wrighton
Organizations
- Massachusetts Institute of Technology