• Title/Summary/Keyword: L-$\alpha$-DLPC (Dilauroylphosphatidylcholine)

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The Capacitance Properities of DLPC Liquid Membrance Fabricatied by LB Method (LB법에 의해서 제작된 DLPC 지질막의 캐패시턴스 특성)

  • 정용호;이우선
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.11 no.8
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    • pp.628-636
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    • 1998
  • LB layers L-$\alpha$-DLPC deposited by LB method were deposited onto n-type silicon wafer as Z-type film. Films made up of 8, 16 layers of lipid with long alkyl chain and the thickness of monolayer and multiayers was determined by ellipsometry. Ut was deposited Ag and Al onto LB layers and silicon wafer for electrode and small electrode exhibit high capacitiance and low lekage current. The C-V curves of the MLS capacitor shows very high saturation value of capacitance. And cross-sectional SEM image of MLD capacitor indicated the presence of pore with Al electrode and we found that the Ag is good for electrode metal.

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Electrochemical Properties of Fatty Acid Containing Azobenzene for Phospholipid (인지질에 따른 아조벤젠기를 함유한 지방산의 전기화학적 특성)

  • Park, Keun-Ho;Son, Tae-Chul;Lee, Kyoung-Goo;Kim, Nam-Suk;Park, Tae-Gon
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2002.05b
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    • pp.43-46
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    • 2002
  • We have investgated the photoisomerization using light irradiation 8A5H-phospholipid( L-$\alpha$-dimyristoylphosphatidylcholine[DMPC], L-$\alpha$-dilauroylphosphatidylcholine[DLPC]mixture LB film accumulated by monolayer on an ITO. We determined electrochemical measurement 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 measured in $NaClO_{4}$ solution at a variable concentration and variable number layers LB film. The scan rate was 100mV/s.

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A study on the electrical properties of lipid monolayers by displacement current method (변위전류법에 의한 지질단분자막의 전기특성에 관한 연구)

  • 이경섭;권영수
    • Electrical & Electronic Materials
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    • v.9 no.5
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    • pp.450-454
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    • 1996
  • Maxwell-Displacement-Current(MDC) measuring technique has been applied to the study of monolayers of Dilauroylphosphatidylcholine (L-.alpha.-DLPC) and Dimyristoylphosphatidylcholine (L-.alpha.-DMPC). The displacement current was generated from monolayers on a water surface by monolayer compression. Displacement current was generated when the area per molecule was about 250.angs.$^{2}$, 280.angs.$^{2}$. Displacement current was generated in the gas state, gas/liquid state, and liquid state in the course of monolayer compression. The orientational change of molecules in monolayers was discussed on the basis of the MDCs obtained. Finally, we measured differential thermal analysis of sample.

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