Properties of galactocerebroside layers transferred to glassy carbon electrodes: effect of an applied electric field.
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.
Wilke
N
N
Centro de Investigaciones en Química Biológica de Córdoba (CIQuiBiC), Departamento Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, 5000 Córdoba, Argentina. wilke@mail.fcq.unc.edu.ar
Baruzzi
A M
AM
Maggio
B
B
Pérez
M A
MA
Teijelo
M López
ML
D002244:Carbon / Q000737:chemistry*; D004560:Electricity; D004563:Electrochemistry / Q000295:instrumentation / Q000379:methods*; D004566:Electrodes; D005699:Galactosylceramides / Q000737:chemistry*; D008563:Membrane Lipids / Q000737:chemistry*; D008856:Microscopy, Fluorescence; D010084:Oxidation-Reduction; D012031:Refractometry
D005699:Galactosylceramides; D008563:Membrane Lipids; C002454:galactocerebroside; D002244:Carbon