지방산과 인지질 혼합 LB막의 전기화학적 특성 = The Electrochemical Characterization of Mixture LB Films of Fatty Acid and Phospholipids

다국어 초록 (Multilingual Abstract)

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다국어 초록 (Multilingual Abstract)

We studied electrochemical characteristics of Langmuir-Blodgett(LB) films by using cyclic voltammetry with a three-electrode system. An Ag/AgCI as a reference electrode, a platinum wire as a counter electroed and LB film-coated indium tin oxide(ITO) as a working electrode were used to study electrochemical characteristics at a various conaentration of NaCIO_4 solution. LB films were reduced from initial potential to -1350 mV, continuously oxidized to 1650mV and returned to the initial point. The scan rate was 100mV/s. The monolayer surface morphology of the LB film have been measured by Atomic Force Microscope(AFM).As a result, We comfirmed that the microscopic properties of LB film by AFM showed the good orientation of momolayer molecules and the thickness of monolayer was 3.5-4.1nm. The cyclic voltammograms(CV) of the ITO-coated glass showed the peak potentials for the reduction-oxidation reation. LB films of 4-octyl-4`-(5-carboxy-pentamethyleneoxy)azobenzene(8A5H) / a-phosphayidyl choline, dilauroyl(DLPC) seemed to be irreversible process caused by the oxidation current from the cyclic voltammogram. The current of oxidatation increased at cyclic voltammogram by increasing 8A5H density in LB films. The diffusivity(D) of LB films increased with increasing of a 8A5H amount and was inversely proportional to the concentration of NaCIO_4 solution.