Self-assembled monolayers of Cu(II) metallosurfactants on GC and HOPG

Giovanna Ghirlanda, Paolo Scrimin, Angel E. Kaifer, Luis A. Echegoyen

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The aggregation properties of a series of three amphiphilic copper(II) complexes on a glassy carbon (GC) electrode were examined by means of cyclic voltammetry (CV) and Osteryoung square wave voltammetry (OSWV). The complexes examined consisted of a copper-binding polar head, modeled after the metal-binding site of the antibiotic Bleomycin, connected to a C16 aliphatic tail. In the pH range explored, 6.0-7.3, all the complexes were found to self-assemble on the rough GC surface. Comparison with similar behavior observed on highly oriented pyrolytic graphite (HOPG) for one of the complexes (L1-Cu(II)) allowed a quantitative treatment of the data. The data fit to the Langmuir isotherm allowed determination of the electrode surface coverage, Γsat, which was consistent with the formation of a monolayer. Preliminary characterization of the structure formed on HOPG by STM confirms the presence of a monolayer.

Original languageEnglish
Pages (from-to)3695-3701
Number of pages7
JournalLangmuir
Volume12
Issue number15
Publication statusPublished - Jul 24 1996

Fingerprint

Graphite
pyrolytic graphite
glassy carbon
Glassy carbon
Self assembled monolayers
Copper
Monolayers
copper
Electrodes
electrodes
antibiotics
square waves
Bleomycin
Antibiotics
Binding sites
Voltammetry
Cyclic voltammetry
Isotherms
isotherms
Agglomeration

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Ghirlanda, G., Scrimin, P., Kaifer, A. E., & Echegoyen, L. A. (1996). Self-assembled monolayers of Cu(II) metallosurfactants on GC and HOPG. Langmuir, 12(15), 3695-3701.

Self-assembled monolayers of Cu(II) metallosurfactants on GC and HOPG. / Ghirlanda, Giovanna; Scrimin, Paolo; Kaifer, Angel E.; Echegoyen, Luis A.

In: Langmuir, Vol. 12, No. 15, 24.07.1996, p. 3695-3701.

Research output: Contribution to journalArticle

Ghirlanda, G, Scrimin, P, Kaifer, AE & Echegoyen, LA 1996, 'Self-assembled monolayers of Cu(II) metallosurfactants on GC and HOPG', Langmuir, vol. 12, no. 15, pp. 3695-3701.
Ghirlanda G, Scrimin P, Kaifer AE, Echegoyen LA. Self-assembled monolayers of Cu(II) metallosurfactants on GC and HOPG. Langmuir. 1996 Jul 24;12(15):3695-3701.
Ghirlanda, Giovanna ; Scrimin, Paolo ; Kaifer, Angel E. ; Echegoyen, Luis A. / Self-assembled monolayers of Cu(II) metallosurfactants on GC and HOPG. In: Langmuir. 1996 ; Vol. 12, No. 15. pp. 3695-3701.
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