Abstract
ABSTRACTA novel series of D-π-A bi-alkyne liquid crystal derivatives were designed and synthesized, which had typical D-π-A structures. The third-order nonlinearities of the compounds were studied by “open aperture” and “closed aperture” Z-scan techniques. Both compounds showed typical nonlinear absorptions and refractions, and the third-order nonlinear susceptibilities have been found to be very high in all cases. The significant nonlinear optical response, combined with the possibility to further modify it, by changing the π-linking groups and the electron donors or acceptors, suggests that these systems can prove to be important candidates for a variety of photonic/optoelectronic applications.
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