Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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A Study on the Oxidation-reduction Reaction of Organic Thin Films

유기초박막의 산화-환원 반응에 관한 연구

  • 박근호 (창원대학교 화공시스템공학과) ;
  • 송주영 (창원대학교 화공시스템공학과)
  • Published : 2006.08.01
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Abstract

We investigated the electrochemical properties for Langmuir-Blodgett (LB) films mixed with 4-octyl-4'-(5-carboxylpentamethyleneoxy)azobenzene (denoted as 8A5H) and phospholipid(L-a-dimyristoylphosphatidylcholine, denoted as DMPC and L-a-dilauroylphosphayidylcholine, denoted as DLPC). The LB films of 8A5H, 8A5H-DMPC and 8A5H-DLPC mixture monolayers were deposited by using the LB 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 1.0 mol/L) of $NaClO_4$ solution. A measuring range was reduced from initial potential to -1350 mV, continuously oxidized to 1650 mV and measured to the initial point. The scan rates were 50, 100, 150 and 200 mV/s, respectively. As a result, LB films of 8A5H and 8A5H-DLPC mixture monolayers appeared irreversible process caused by only the oxidation current from the cyclic voltammogram and LB films of 8A5H-DMPC monolayer mixture was found to be caused by a reversible oxidation-reduction process.

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References

  1. N. S Lee, H. K. Shin, J. S. Chang, and Y. S. K won, 'A study on the current-voltage properties of dipyridinium molecule using scanning tunneling microscopy', J. of KIEEME(in Korean), Vol. 18, No.7, p. 622, 2005
  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. of KIEEME(in Korean), Vol. 13, No.4, p. 318, 2000
  3. X. B. Xu, Y. Majirna, and M. Iwamoto, 'Molecular switching In phospholipid-azobenzene mixed monolayers by photo-isomerization', Thin Solid Films., Vol. 331, p. 239, 1998 https://doi.org/10.1016/S0040-6090(98)00925-0
  4. H. Tachibana, R. Azumi, M. Tanaka, M. Matsumoto, S. Sako, H. Sakai, M. Abe, Y. Kondo, and N. Yoshino, 'Structures and photoisomerization of the polyion complex Langmuir-Blodgett films of an amphiphile bearing two azobenzene units', Thin Solid Films., Vol. 284, p. 73, 1996 https://doi.org/10.1016/S0040-6090(95)08274-3
  5. I. Kim, J. F. Rabolt, and P. Stroeve, 'Dynamic monolayer behavior of a photo-responsive azobenzene surfactant', Colloids and Surfaces., Vol. 171, p. 167, 2000 https://doi.org/10.1016/S0927-7757(99)00560-9
  6. K. H. Park and J. Y. Song, 'A study on the displacement current of fatty acid and polyamic acid mixture', J. Ind. Eng. Chem.tkah, Vol. 8, No.2, p. 126, 2002
  7. K. H. Park and T. G. Park, 'A study on the photoisomerization of functional polyimide monolayers containing azobenzene', J. Korean Ind. Eng. Chem., Vol. 11, No.1, p. 87, 2000
  8. H. X. Huang, D. J. Qian, N. Nakamura, C. Nakmura, T. Wakayarna, and J. Miyake, 'Quartz crystal microbalance and electrochemical studies on the electrode modified by layer-by layer multilayers of viologen polyelectrolytes', Electrochimica Acta., Vol. 49, p. 1491, 2004 https://doi.org/10.1016/j.electacta.2003.11.009
  9. K. H. Park and T. G. Park, 'A study on the photoisomerization of fatty acid and polyamic acid mixture', J. of KIEEME(in Korean), Vol. 15, No.8, p. 695, 2002
  10. D. W. Kang and K. H. Park, 'Photoisomerization LB monolayer films mixed with fatty acid and phospholipid at difference mixture ratio', J. Kor. Oil Chem. Soc., Vol. 17, No.3, p. 178, 2000
  11. K. H. Park, K. J. Shim, and N. S. Kim, 'Photoisomerization of mixture LB films of fatty acid and phospholipid (DOPC)', J. Kor. Oil Chem. Soc., Vol. 19, No.1, p. 43, 2002
  12. B. J. Kim, B. C. Min, and K. H. Park, 'Electrochemical properties of langmuir-blodgett films of 4-Octyl-4'-(5-carboxypentamethyl-enecxy)azobenzene and Dilauroyl-L-a-Phosph ayidylcholine mixture', J. Kor. Oil Chem. Soc., Vol. 19, No.1, p. 49, 2002
  13. Y. L. Lee and C. Y. Chen, 'Surface wettability and platelet adhesion studies on Langmuir-Blodgett films', Appl. Surface Sci., Vol. 207, p. 51, 2003 https://doi.org/10.1016/S0169-4332(02)01235-7
  14. M. Langner and S. Hui, 'Effect of free fatty acids on the permeability of 1,2-dimyristoyl- sn-glycero-3-phosphocholine bilayer at the main phase transition', J. Biochimica et Biophysica Acta, Vol. 1463, p. 439, 2000 https://doi.org/10.1016/S0005-2736(99)00236-9
  15. K. H. Park and B. J. Kim, 'Electrochemical properties of Langmuir-Blodgett(LB) films mixed with 4-Octyl-4'-(5-carboxypenta methylenecxy)azobenzene(8A5H) and phospho-lipid', J. Korean Ind. Eng. Chem., Vol. 14, No.6, p. 759, 2003
  16. 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., Vol. 20, No.2, p. 94, 2003
  17. J. M. Ko and H. C. Park, 'Principles and applications of cyclic voltammetry', Polym. Sci. Technol., Vol. 10, No.4, p. 519, 1999