Potentiometric and fiber optic sensors for ph based on an electropolymerized cobalt porphyrin

Timothy L. Blair, Leonidas G Bachas, Sylvia Daunert, Leonidas G. Bachas

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

Potentiometric and fiber optic sensors based on polymer films were prepared by electrodeposition of the ion-carrier monomer cobalt(II) tetrakis (p-hydroxyphenyl)porphyrin, [Co(p-OH)TPP]. Fiber optic sensors were developed by electropolymerization of the porphyrin on the surface of indium(tin) oxide glass slides. The optical sensors were highly selective to pH, presenting minimal interferences from anions. They had a linear response from pH 8 to 12. Potentiometric sensors were prepared from porphyrin films electrode-posited on glassy-carbon disk electrodes. These electrodes gave a near-Nernstian response to pH from pH 2 to 12 with minimal interferences.

Original languageEnglish
Pages (from-to)2155-2158
Number of pages4
JournalAnalytical Chemistry
Volume65
Issue number15
StatePublished - Dec 1 1993
Externally publishedYes

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Porphyrins
Fiber optic sensors
Cobalt
Electrodes
Potentiometric sensors
ITO glass
Electropolymerization
Glassy carbon
Optical sensors
Polymer films
Electrodeposition
Anions
Monomers
Ions

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Potentiometric and fiber optic sensors for ph based on an electropolymerized cobalt porphyrin. / Blair, Timothy L.; Bachas, Leonidas G; Daunert, Sylvia; Bachas, Leonidas G.

In: Analytical Chemistry, Vol. 65, No. 15, 01.12.1993, p. 2155-2158.

Research output: Contribution to journalArticle

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