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27 April 1993 Organic low-molar-mass and polymeric liquid crystalline NLO materials
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Proceedings Volume 1853, Organic and Biological Optoelectronics; (1993)
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States
Second harmonic generation by NLO-active organic chromophores is used to monitor the poling dynamics and temporal stability of three kinds on `guest-host' materials: (1) helical polypeptides, (2) random coil polymers, and (3) smectic thermotropic liquid crystals. In (1) sidechain NLO-active chromophores reorient without changing the polymer backbone, whereas in (2) there is a two stage reorientation, sidechains followed by backbone. For the liquid crystal, (3) the mean field gives rise to a threshold poling potential and the polar chromophore orientation appears to be stabilized by the apolar but anisotropic mesogen orientational order.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hanlin Wang, Moon Y. Jin, Richard C. Jarnagin, and Edward T. Samulski "Organic low-molar-mass and polymeric liquid crystalline NLO materials", Proc. SPIE 1853, Organic and Biological Optoelectronics, (27 April 1993);

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