한국응용과학기술학회지 (Journal of the Korean Applied Science and Technology)

  • 제31권3호
  • /
  • Pages.352-358
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  • 2014
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  • 1225-9098(pISSN)
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  • 2288-1069(eISSN)
한국응용과학기술학회 (The Korean Society of Applied Science and Technology)
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포화지방산 단분자층 LB막의 안정성에 관한 연구

A Study on the Stability of Langmuir-Blodgett(LB) Films of Saturated Fatty Acid Monolayer

  • 박근호 (창원대학교 화공시스템공학과)
  • Park, Keun-Ho (Dept. of Chemical Engineering, Changwon National University)
  • 투고 : 2014.06.04
  • 심사 : 2014.07.29
  • 발행 : 2014.09.30
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초록

포화지방산(C12, C14, C16, C18) 단분자층 LB막의 전기화학적 특성을 통하여 그 안정성을 순환전압전류법으로 조사하였다. 포화지방산 단분자층 LB막은 ITO glass에 LB법을 사용하여 제막하였다. 전기화학적 특성은 0.1 N $NaClO_4$ 용액에서 3 전극 시스템으로 순환전압전류법에 의해 측정하였다. 측정범위는 연속적으로 1650 mV로 산화시키고, 초기 전위인 -1350 mV로 환원시켰다. 주사속도는 각각 50, 100, 150, 200 및 250 mV/s로 설정하였다. 그 결과 포화지방산 LB막은 순환전압전류곡선으로부터 산화전류로 인한 비가역공정으로 나타났다. 포화지방산 LB막의 확산계수(D)를 산출한 결과 각각 라우르산, $2.223{\times}10^{-3}cm^2/s$, 미리스트산, $2.461{\times}10^{-4}cm^2/s$, 팔미트산, $7.114{\times}10^{-4}cm^2/s$ 및 스테아르산, $2.371{\times}10^{-4}$을 얻었다.

We were investigated the stability through the electrochemical characteristics of saturated fatty acid(C12, C14, C16, C18) monolayer LB films by cyclic voltammetry. Saturated fatty acid monolayer LB films was deposited on the indium tin oxide(ITO) glass by the LB method. The electrochemical properties were measured by cyclic voltammetry with a three-electrode system in 0.1 N $NaClO_4$ solution. The measuring range was 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 were set. As a result, LB monolayer films of saturated fatty acid were appeared on irreversible processes by the oxidation current from the cyclic voltammogram. Diffusion coefficient(D) of saturated fatty acid(C12, C14, C16, and C18) was calculated 22.231, 2.461, 7.114 and 2.371 ($cm^2s^{-1}{\times}10^{-4}$) in 0.1 N $NaClO_4$ solution, respectively.

키워드

참고문헌

  1. C. H. Min, T. C. Son, and K. H. Park, Electrochemical Properties of Ultrathin Film Prepared Functional Polyimide by Langmuir-Blodgett Method, J. Kor.. Oil Chem. Soc., 26(4), 400 (2009).
  2. M. H. Bae, K. H. Song, T. G. Park, and K. H. Park, Dynamic behaviors of externally-stimulated monolayers on the water surface, J. KIEEME, 13(4), 318, 2000.
  3. X. Zhai, and J. M. Kleijn, Molecular structure of dipalmitoyl phosphatidyl choline Langmuir-Blodgett monolayer s studied by atomic force microscopy, Thin Solid Films, 304 327 (1997). https://doi.org/10.1016/S0040-6090(97)00185-5
  4. A. Schaper, L. Wolthaus, D. Moebius, and T. M. Jovin, Surface morphology and stability of Langmuir-Blodgett mono-and multilayers of saturated fatty acids by scanning force microscopy, Langmuir, 9(8), 2178 (1993). https://doi.org/10.1021/la00032a046
  5. N. S Lee, H. K. Shin, J. S. Chang, and Y. S. Kwon, A study on the current-voltage properies of dipyridinium molecule using scanning tunneling microscopy, J. KIEEME, 18(7), 622 (2005).
  6. S. H. Choi, T. C. Son, J. Y. Song, and K. H. Park, Electrochemical Properties of Organic Ultra Thin Films of Fatty Acid and Phospholipid Mixture, J. Kor. Oil Chem. Soc., 19(3), 75 (2006).
  7. M. M. Sung, Self-Assembled Monolayers, SAMs, Electron. Mater. Lett., 3(3), 137 (2007).
  8. T. C. Son, N. S. Kim, and K. H. Park, The Electrochemical Characterization of Mixture LB Films of Fatty Acid and Phospholipids, J. Kor. Oil Chem. Soc., 20(2), 94 (2003).
  9. J. M. Ouyang, Z. M. Zhang, C. X. Huang, X. Q. Yao, H, Y, Liu, and X. M. Hu, Properties of mixed monolayer and LB films of chiral amino acid porphyrin, Colloids and Surfaces, 175, 99 (2000). https://doi.org/10.1016/S0927-7757(00)00525-2
  10. R. K. Pandey, K. A. Suresh, and V. Lakshminarayanan, Electron transfer studies on cholesterol LB films assembled on thiophenol and 2-naphthalenethiol self-assembled monolayers, J. Coll. Inter. Sci. 315, 528 (2007). https://doi.org/10.1016/j.jcis.2007.07.044
  11. R. Li, Q. B. Chen, D. Z. Zhang, H. L. Liu, and Y. Hu, Mixed monolayers of Gemini surfactants and stearic acid at the air/water interface, J. Coll. Inter. Sci., 327, 162 (2008). https://doi.org/10.1016/j.jcis.2008.07.038
  12. K. H. Park, A Study on the Stability of Langmuir-Blodgett(LB) Films of L-${\alpha}$-Phosphatidylethanolamine Monola-yer, J. Kor. Oil Chem. Soc., 31(1), 44 (2014).
  13. K. H. Park, and J. Y. Song, "A Study on the Oxidation-reduction Reaction of Organic Thin Films, J. Kor. Electrical and Electronic Mat. Eng. 19(8), 724 (2006).
  14. P. T. Kissinger, Laboratory Techniques in Electroanalytical Chemistry, p.86, Marcel Dkker (1984).
  15. D. S. Park, Study for Electrode Reaction Characteristics by Cyclic Voltammetry, Poly. Sci. Tech., 14, 356 (2003).
  16. K. H. Park, A Study on the Electrochemical Properties of Langmuir-Blodgett Nano-film Mixed with Polyimide and Phospholipid, J. Kor. Oil Chem. Soc., 29(3), 421 (2012).
  17. K. H. Park, A Study on the Electrochemical Properties of Langmuir-Blodgett Monolayer Film Mixed with Polyamic Acid and Sphingomyelin, J. Kor. Oil Chem. Soc., 30(1), 64 (2013).

피인용 문헌

  1. 미리스트산과 스테아르산 혼합 LB막의 안정성에 관한 연구 vol.34, pp.2, 2014, https://doi.org/10.12925/jkocs.2017.34.2.376