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고분자 Langmuir 박막의 표면형상

The Surface Morphology of Polymer Langmuir Film

  • 정치섭 (청주대학교 레이저광정보공학과)
  • 발행 : 2005.01.01

초록

The Langmuir monolayers of polyamic acid salts with three kinds of alkyl chains have been investigated by means of conventional $\pi$-A isotherms and second harmonic generation measurements proposed in this paper. The surface molecular density dependence of second harmonic intensity clearly shows the region of aggregation while corresponding $\pi$-A isotherm doesn't show any changes in the surface morphology at the same region. The surface morphology analysis based on the second harmonic measurement was consistent with the Brewster angle microscope measurement results.

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참고문헌

  1. C. C. Teng and H. T. Man, 'Simple reflection technique for measuring the electro-optic coefficient of poled polymer', Appl. Phys. Lett., Vol. 56, No. 18, p. 1734, 1990
  2. D. M. Nguyen, T. M. Mayer, S. F. Hubbard, K. D. Singer, J. A. Mann, and J. B. Lando 'Polar polymeric langmuirblodgett films for optical application', Macromolecules, Vol. 30, No. 20, p. 6150, 1997 https://doi.org/10.1021/ma961392q
  3. Roberts, 'Langmuir-blodgett Films', Plenum, p. 93, 1990
  4. 손병청, 정순욱, 손태원, 강 훈, 강도열, 'Langmuir-lodgett(LB)법을 이용한 (N-docosyl pyridinium)-TCNQ(1:2) 착체의 초박막 제작', 전기전자재료학회지, 1권, 4호, p. 303, 1988
  5. 박상현, 김증빈, 'LB막 누적을 위한 장치 제작과 Monomer 합성에 관한 연구', 전기전자 재료학회논문지, 12권, 9호, p. 787, 1999
  6. G. Gaines, JR, 'Insoluble Monolayers at Liquid-gas Interfaces', Interscience publishers, p. 164, 1988
  7. 이우선, 최창주, 정용호, 김남오, 이경섭, 장의구, 김태성, 'Moving wall형 LB법에 의하여 제작된 DLPC 지질막의 누적특성', 전기전자재료학회지, 10권, 6호, p. 548, 1997
  8. D. Honig and D. Mobius 'Reflectrometry at the Brewster Angle and Brewster Angle Microscopy at the Air-water Interface', Thin Solid Films. 210/211, p. 64, 1992
  9. S. Henon and J. Meunier 'Observation of First Order Transitions In Monolayers without Fluorescent Probes', Thin Solid Films, 210/ 211, p. 121, 1992
  10. Mare N. G. de mul and J. Adin Mann, Jr., 'Determination of the thickness and optical properties of a langmuir film from the domain morphology by brewster angle microscope', Langmuir., Vol. 14, No.9, p. 2455, 1998
  11. N. Bloembergen, R. K. Chang, S. S. Jha, and C. -H. Lee, 'Optical second harmonic generation in reflection from media with inversion symmetry', Physical Review, Vol. 174, No.3, p. 813, 1968
  12. P. Guyot-Sionnest, H. Hsiung, and Y. R. Shen, 'Surface polar ordering in a liquid crystal observed by optical second harmonic generation', Phys. Rev. Lett., Vol. 57, No. 23, p. 2963, 1986
  13. M. B. Feller, W. Chen, and Y. R. Shen, Phys., 'Investigation of surface induced alignment of liquid crystal molecules by optical second harmonic generation', Rev. A, Vol. 43, No. 12, p. 6778, 1991