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Electrodes with Covalently Attached Monolayers

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2 Author(s)
Diaz, A.F. ; IBM Research Division laboratory, 5600 Cottle Road, San Jose, California 95193, USA ; Kanazawa, K.K.

We have used cyclic and second-harmonic ac voltammetry to study solution and solid state electrochemical reactions on metal oxide surfaces chemically modified with silyl derivatives of the type SnO2/Si(CH2)3NH(CH2)xNR1 R2. The R groups studied include pyrazoline derivatives, tetrathiafulvalene, and ferrocene. Electrode effects on solution redox reactions involving phenothiazine and benzoquinone have also been compared using both platinum electrodes and the chemically modified electrodes. The results from the various approaches used consistently indicate that the redox reactions are slower on modified as opposed to unmodified electrode surfaces.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

Published in:

IBM Journal of Research and Development  (Volume:23 ,  Issue: 3 )