Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Photoisomerization of Mixture LB Films of Fatty Acid and Phospholipid(DOPC)

지방산과 인지질(DOPC)의 혼합 LB막의 광이성질화 현상에 관한 연구

  • Park, Keun-Ho (Dept. of Chemical Engineering, Changwon National University) ;
  • Shim, Kyoung-Jea (Dept. of Chemical Engineering, Changwon National University) ;
  • Kim, Nam-Seok (Dept. of Chemical Engineering, Changwon National University)
  • 박근호 (창원대학교 화공시스템공학과) ;
  • 심경재 (창원대학교 화공시스템공학과) ;
  • 김남석 (창원대학교 화공시스템공학과)
  • Published : 2002.03.31
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Abstract

We carried out this subject to observe photoisomerization using 1,2-dioleoyl-sn- glycero-3-phosphocholine(DOPC) mixed with fatty acid containing azobenzene group which has reversible to cis-trans by light irradiation. Spreading solutions for the LB films were prepared in chloroform($5.0{\times}10^{-5}$mol/L).We investigated the photoisomerization and property of the organic ultra thin film of fatty acid containing azobenzene was prepared on the hydrophilic ITO(idium tin oxide) glass plate by LB method. As a result, the absorption spectra of 8A5H and DOPC of mixture LB films was induced to photoisomerization by alternating irradiation of ultraviolet and visible light, because the condensation of pure azobenzene monolayers was loosened by the introduction of phospholipid into the monolayers, and the molecular high aggregation in pure azobenzene monolayers is also weakened by the introduction of phospholipid. We found that it was reversibly induced to cis-trans photoisomerization in several solvents and mixture LB films.

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References

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