Properties of galactocerebroside layers transferred to glassy carbon electrodes: effect of an applied electric field

N WILKE; AM BARUZZI; B MAGGIO; MA PÉREZ; M LÓPEZ TEIJELO

COLLOIDS AND SURFACES B-BIOINTERFACES

Elsevier

Año: 2005 vol. 41 p. 223 - 223

0927-7765

span lang="en" style="FONT-SIZE: 12pt; FONT-FAMILY: "Times New Roman"; mso-ansi-language: EN-US; mso-fareast-font-family: "Times New Roman"; mso-fareast-language: ES; mso-bidi-language: AR-SA">Galactocerebroside films deposited onto glassy carbon electrodes have been previously studied through the electrochemical response of a redox couple present in solution. Those experiments indicated that the film is inhomogeneous and that there are lipid-free places. In this work, we present experimental results indicating that those bare regions are formed when the electrode is introduced in an aqueous solution, and that the size and/or amount of uncovered domains increase when negative potentials are applied to the film. The experimental techniques employed for these findings are epifluorescence microscopy and ellipsometry.