Browse > Article
http://dx.doi.org/10.12925/jkocs.2005.22.4.3

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

Park, Keun-Ho (Dept. of Chemical Engineering, Changwon National University)
Choi, Sung-Hyun (Dept. of Chemical Engineering, Changwon National University)
Song, Ju-Yeong (Dept. of Chemical Engineering, Changwon National University)
Publication Information
Journal of the Korean Applied Science and Technology / v.22, no.4, 2005 , pp. 315-322 More about this Journal
Abstract
We investigated the electrochemical properties for Langmuir-Blodgett (LB) films mixed with 4-octyl-4'-(5-carboxylpentamethyleneoxy)azobenzene (denoted as 8A5H) and $phospholipid(L-{\alpha}-dimyristoylphosphatidylcholine$, 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 $NaClO_4$ 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.
Keywords
Langmuir-Blodgett(LB) film; 8A5H; DMPC; phospholipid; cyclic voltammetry;
Citations & Related Records
연도 인용수 순위
  • Reference
1 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., 284, 73(1996)
2 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., 19(1), 43(2002)
3 B. J. Kim, B. C. Min, and K. H. Park, Electrochemical Properties of Langmuir-Blodgett Films of 4-Octyl-4'-(5-carboxypentamethylenecxy)azoben zene and Dilauroyl-L-$\alpha$-Phosph ayidylcholine Mixture, J. Kor. Oil Chem. Soc., 19(1), 49(2002)
4 Y. L. Lee and C. Y. Chen, Surface wettability and platelet adhesion studies on Langmuir- Blodgett films, Appl.. Surface Sci., 207, 51 (2003)
5 X. B. Xu, Y. Majima, and M. Iwamoto, Molecular switching In phospholipid-azobenzene mixed monolayers by photoisomerization, Thin Solid Films., 331, 239(1998)
6 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)
7 K. H. Park and J. Y. Song, A Study on the Displacement Current of Fatty Acid and Polyamic Acid Mixture, J. Ind. Eng. Chem., 8(2), 126(2002)   DOI
8 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., 17(3), 178(2000)
9 I. Kim, J. F. Rabolt, and P. Stroeve, Dynamic monolayer behavior of a photo-responsive azobenzene surfactant, Colloids and Surfaces.. 171, 167(2000)
10 H. X. Huang, D. J. Qian, N. Nakamura, C. Nakmura, T. Wakayama, and J. Miyake, Quartz crystal microbalance and electro- chemical studies on the electrode modified by layer-by layer multilayers of viologen polyelectrolytes, Electrochimica Acta, 49, 1491(2004)
11 K. H. Park, and B. J. Kim, Electrochemical Properties of Langmuir-Blodgettt(LB) Films mixed with 4-0ctyl-4'-(5-carboxypenta methylenecxy) azobenzene(8A5H) and Phospholipid, J. Korean Ind Eng. Chem., 14(6), 759(2003)
12 K. H. Park and T. G. Park, A Study on the Photoisomerization of Functional Polyimide Monolayers containing Azobenzene, J. Korean Ind. Eng. Chem., 11(1), 87(2000)
13 M. Langner and S. Hui, Effect of free fatty acids on the permeability of 1,2 - dimyristoyl-sn-glycero-3-pho sphocholine bilayer at the main phase transition, J. Biochimica et Biophysica Acta, 1463, 439(2000)   DOI   ScienceOn
14 J. M. Ko and H. C. Park, Principles and applications of cyclic voltammetry, Polym. Sci. Technol., 10(4), 519(1999)