아조벤젠기를 가진 지방산과 L-alpha-dimyristoylphosphatidylcholine 혼합 LB막의 전기화학적 특성

Electrochemical Properties of Langmuir-Blodgett(LB) Films of Fatty Acid Containing Azobenzene and L-alpha-dimyristoylphosphatidylcholine Mixture

We investigated the electrochemical properties for Langmuir-Blodgett (LB) films mixed with 4-octyl-4 -(5-carboxylpentamethyleneoxy)azobenzene (denoted as 8A5H) and $phospholipid(L-alpha-dimyristoylphosphatidylcholine, denoted as DMPC). LB films of 8A5H monolayer and 8A5H-DMPC were deposited by using the Langmuir-Blodgett method on the indium tin oxide(ITO) glass. The electrochemical properties measured by using cyclic voltammetry with a three_electrode system, an Ag/AgCl reference electrode, a platinum wire counter electrode and LB film-coated ITO working electrode at various concentrations(0.1, 0.5, and 1.0mol/L) of NaClO4 solution. A measuring range was reduced from initial potential to -1350mV, continuously oxidized to 1650mV and measured to the initial point. The scan rates were 50, 100, 150 and 200mV/s, respectively. As a result, LB films of 8A5H monolayer appeared irreversible process caused by only the oxidation current from the cyclic voltammogram and LB films of 8A5H-DMPC mixture were found to be caused by a reversible oxidation-reduction process.