지방산과 인지질 혼합 LB막의 전기화학적 특성

• 영문명: The Electrochemical Characterization of Mixture LB Films of Fatty Acid and Phospholipids
• 발행기관: 한국응용과학기술학회 (구.한국유화학회)
• 저자명: 손태철(Son TaeChul) 김남석(Kim NamSeok) 박근호(Park KeunHo)
• 간행물 정보: 『한국응용과학기술학회지』한국유화학회지 제20권 제2호, 94~100쪽, 전체 7쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2003.06.30

영문 초록

We studied electrochemical characteristics of Langmuir-Blodgett(LB) films by using cyclic voltammetry with a three-electrode system. An Ag/AgCl as a reference electrode, a platinum wire as a counter electrode and LB film-coated indium tin oxide(ITO) as a working electrode were used to study electrochemical characteristics at a various concentration of NaClO4 solution. LB films were reduced from initial potential to -1350 mV, continuously oxidized to l650mV and returned to the initial point. The scan rate was l00mV/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.lnm. 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-carboxypentamethyleneoxy) azobenzene(8A5H) / L-alpha-phosphayidyl choline, dilauroyl(DLPC) seemed to be irreversible process caused by only 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 NaClO4 solution.

키워드

LB film cyclic voltammogram AFM 8A5H DLPC