Effect of electrode modification by ionic polymer adsorption on electrochemiluminescence of luminol

Masayuki Kamada, Yasuo Yoshimi

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

Electrochemiluminescence (ECL) of luminol can be allowed to occur in well-mixed solutions of luminol and hydrogen peroxide. However ECL is scarcely applied for quantitative analysis of biochemicals due to low quantum yield in physiological pH. In this work, we evaluated the effect on the ECL intensity of modifying the electrode with cationic polymer. The sensitivity of ECL to hydrogen peroxide concentration at the treated ITO increased dramatically. Results indicate that the cationic polymer adsorbed on the electrode enhances ECL due to probably increasing pH in the vicinity of the electrode surface. However, the cationic polymer also enhanced inhibition of ECL by ascorbic acid, an anionic reducing reagent.

Original languageEnglish
Pages275-278
Number of pages4
Publication statusPublished - 2004 Dec 1
EventChemical Sensors VI: Chemical and Biological Sensors and Analytical Methods - Proceedings of the International Symposium - Honolulu, HI, United States
Duration: 2004 Oct 32004 Oct 8

Conference

ConferenceChemical Sensors VI: Chemical and Biological Sensors and Analytical Methods - Proceedings of the International Symposium
CountryUnited States
CityHonolulu, HI
Period04/10/304/10/8

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Kamada, M., & Yoshimi, Y. (2004). Effect of electrode modification by ionic polymer adsorption on electrochemiluminescence of luminol. 275-278. Paper presented at Chemical Sensors VI: Chemical and Biological Sensors and Analytical Methods - Proceedings of the International Symposium, Honolulu, HI, United States.