Abstract
A main-chain liquid-crystalline polymer based on an unsymmetrically disubstituted cyanostilbene has been synthesized and characterized. The polymer exhibited a highly birefringent nematic texture, followed at higher temperatures by a uniaxial nematic structure the scattering characteristics of which were two to three orders of magnitude smaller than those normally observed in liquid-crystalline materials. Thin solid films prepared by rapid cooling of the polymer in the monotropic state retained the molecular organization and scattering behaviour of this phase. A preliminary evaluation of the second-order nonlinear optical properties associated with these film structures was carried out by means of a crossed polarizer technique. © 1993.
Original language | English (US) |
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Journal | Synthetic Metals |
Volume | 61 |
Issue number | 1-2 |
DOIs | |
State | Published - Nov 23 1993 |
Externally published | Yes |