대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

Azobenzene 유도체 LB막의 광학적 특성 및 비선형 광학 효과

Nonlinear Optical Effect and Optical Properties of Azobenzene Derivative LB Lilm

  • 신동명 (홍익대학교 공과대학 전기공학과) ;
  • 최강훈 (홍익대학교 공과대학 전기공학과) ;
  • 강도열 (홍익대학교 공과대학 전기공학과) ;
  • 정치섭 (청주대학교 공과대학 광학공학과)
  • Shin, Dong-Myung (Department of Electrical & Control Engineering, Hong-Ik University) ;
  • Choi, Kang-Hoon (Department of Electrical & Control Engineering, Hong-Ik University) ;
  • Kang, Dou-Yol (Department of Electrical & Control Engineering, Hong-Ik University) ;
  • Jung, Chi-Sup (Department of Optical Engineering, Cheong-Ju University)
  • 발행 : 1994.11.18
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초록

The second-order nonlinear optical effect, especially the second harmonic generation, in Langmuir-Blodgett(LB) films have get much attention over the past few years. For second harmonic generation(SHG) of the ultrathin organic films, the multilayer structure of the film should have the noncentrosymmetric arrangements of molecules. The Langmuir-Blodgett technique can result in the production of thin films of precisely controlled dimensions and structure. In this paper, n-octadecyl 4-(4'-nitrophenylazo)-1-naphthyl ether, ONNE(azohenzene derivative), was synthesized and the optical properties of ONNE was studied. Nonccntrosymmctric Z-type LB films of ONNE were prepared and SHG intensity of the film were measured. The structural characteristics of floating monolayer(L film) and LB film of ONNE were discussed with $\pi$-A isotherm. UV-visible absorption spectroscopy and spectroscopic ellipsometry. The polarized UV-visible absorption spectroscopy and SHO intensity suggest the molecular orientation in LB film.

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