Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Electrochemical Properties of

Gushikem1, Peixoto, Filho

  • 1Instituto de Quimica, UNICAMP, Campinas, 13083-970, Brazil

Journal of Colloid and Interface Science
|December 1, 1996
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Study of B Decays to Charmonium States: B-->eta(c)K and B --> chi(c0)K.

Physical review letters·2001
Same author

A Humanized Anti-c-erbB-2 Monoclonal Antibody for the Treatment of Breast Cancer.

Breast cancer (Tokyo, Japan)·2000
Same author

Dose-Intensified Chemotherapy for Breast Cancer: Present and Future Prospects.

Breast cancer (Tokyo, Japan)·2000
Same author

In Vitro and In Vivo Modulation of Growth Regulation in the Human Breast Cancer Cell Line MCF-7 by Estradiol Metabolites.

Breast cancer (Tokyo, Japan)·2000
Same author

A Case of Reversed Ophthalmic Artery Flow without Occlusion of the Internal Carotid Artery.

Japanese journal of ophthalmology·2000
Same author

Covalent bonds in AlMnSi icosahedral quasicrystalline approximant

Physical review letters·2000

Ruthenium(II) ethylenediaminetetraacetic acid (Ru(edta)(H2O))-, immobilized on zirconium(IV) oxide-coated silica gel, exhibits electrochemical activity. Ligand substitution significantly alters the Ru(II)/Ru(III) redox potential.

Area of Science:

  • Electrochemistry
  • Surface Chemistry
  • Coordination Chemistry

Background:

  • Ruthenium complexes are widely studied for their electrochemical properties.
  • Immobilization of metal complexes on solid supports can create novel electrochemical sensors.
  • Zirconium(IV) oxide-coated silica gel offers a robust platform for surface modification.

Purpose of the Study:

  • To investigate the electrochemical behavior of an immobilized ruthenium complex.
  • To explore the effect of ligand substitution on the redox potential of the immobilized complex.
  • To evaluate zirconium(IV) oxide-coated silica gel as a support for electrochemical applications.

Main Methods:

  • Strong adsorption of [Ru(edta)(H2O)]- onto zirconium(IV) oxide-coated silica gel.

Related Experiment Videos

  • Electrochemical characterization of the immobilized complex.
  • Systematic substitution of the coordinated water molecule with various ligands (thiocyanate, pyridine, 4-cyanopyridine, pyrazine).
  • Measurement of midpoint potentials (vs SCE) for the Ru(II)/Ru(III) redox couple.

    • Main Results:

    • The immobilized [Ru(edta)(H2O)]- complex displayed a clear electrochemical response.
    • Ligand substitution caused significant shifts in the midpoint potentials.
    • The observed potential shifts followed the order: water (-290 mV) < thiocyanate (-200 mV) < pyridine (-180 mV) < 4-cyanopyridine (-80 mV) < pyrazine (-50 mV).

    Conclusions:

    • Zirconium(IV) oxide-coated silica gel effectively immobilizes ruthenium complexes for electrochemical studies.
    • The redox potential of the immobilized ruthenium complex is tunable through ligand modification.
    • This work demonstrates the potential for developing tailored electrochemical systems by controlling the coordination environment of immobilized metal complexes.