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http://dx.doi.org/10.12925/jkocs.2014.31.1.44

A Study on the Stability of Langmuir-Blodgett(LB) Films of L-${\alpha}$-Phosphatidylethanolamine Monolayer  

Park, Keun-Ho (Dept. of Chemical Engineering, Changwon National University)
Publication Information
Journal of the Korean Applied Science and Technology / v.31, no.1, 2014 , pp. 44-49 More about this Journal
Abstract
We were investigated by cyclic voltammetry to the stability through the electrochemical characteristics of phospholipid(L-${\alpha}$-phosphatidylethanolamine, LAPE) monolayer LB films. LAPE monolayer LB films was deposited by the LB method on the indium tin oxide(ITO) glass. The electrochemical properties was measured by cyclic voltammetry with a three-electrode system in 0.5 N, 1.0 N, 1.5 N and 2.0 N $KClO_4$ solution. The measuring range is continuously oxidized to 1650 mV, with an initial potential of -1350 mV was reduced. Scanning rates of 50, 100, 150, 200, and 250 mV/s was set. As a result, LB monolayer films of LAPE was appeared on irreversible processes by the oxidation current from the cyclic voltammogram. Diffusion coefficient (D) of LAPE was calculated 195, 15.9, 5.75, 1.38 and $0.754cm^2s^{-1}{\times}10^{-9}$ at 0.01 N, 0.05 N, 0.10 N, 0.15 N and 0.20 N $KClO_4$ solutions, respectively.
Keywords
L-${\alpha}$-phosphatidylethanolamine; Langmuir-Blodgett(LB) film; stability; cyclic voltammetry; diffusivity(D);
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