A self-assembled pigmented BLM on a platinum support: the light-induced electrical effects.
The light-induced voltage and current changes under continuous illumination have been investigated in pigmented self-assembled lipid bilayer membranes deposited on a platinum electrode. Such self-organized pigmented bilayer-platinum system containing Zn-Phthalocyanine (ZnPc) as a photosensitizer and glycerol-dioleate (GDO) as a bilayer forming solution has been found to shift its electrode potential to more positive value on light irradiation as well as to increase the cathodic current across the membrane. The results indicate a direct electron transfer from the platinum electrode to hydrogen ion in the electrolyte solution. Furthermore, it has also been demonstrated a dramatic increase of the photocurrent over the time course of BLM formation visualizing a role of the bulk quenching processes which are significantly diminished in thin bilayer membrane.
Salamon
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Institute of Physics, Poznan Technical University, Poland.
Tien
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HT
D004075:Diglycerides; D004579:Electron Transport; D007211:Indoles; D054833:Isoindoles; D008027:Light; D008051:Lipid Bilayers / Q000378:metabolism*; D008564:Membrane Potentials; D009942:Organometallic Compounds; D010984:Platinum; D017967:Zinc Compounds
D004075:Diglycerides; D007211:Indoles; D054833:Isoindoles; D008051:Lipid Bilayers; D009942:Organometallic Compounds; D017967:Zinc Compounds; C052159:Zn(II)-phthalocyanine; D010984:Platinum; C013965:diolein