Organic low-molar-mass and polymeric liquid crystalline NLO materials

Hanlin Wang; Moon Y. Jin; Richard C. Jarnagin; Edward T. Samulski

doi:10.1117/12.144050

27 April 1993 Organic low-molar-mass and polymeric liquid crystalline NLO materials

Hanlin Wang, Moon Y. Jin, Richard C. Jarnagin, Edward T. Samulski

Proceedings Volume 1853, Organic and Biological Optoelectronics; (1993) https://doi.org/10.1117/12.144050
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

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.

Citation Download Citation

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); https://doi.org/10.1117/12.144050

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