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We demonstrate a chiral optical response in stacked arrangements of resonantly coupled plasmonic nanostructures possessing the capability to encode their 3D arrangement in unique spectra making then ideal candidates for a 3D chiral plasmonic ruler.
Polymethacrylate and polycondensated polymers based on chromophores containing the s-triazolo[3,4-b]-thiadiazole heterocycle were synthesized. Chromophore and polymer preparations are described. Second order NLO measurements are reported for polymers and for one functionalized chromophore. The maximum value of second harmonic generation coefficient (d 33 ) measured is 11.5pm/V at incident...
Abstract: Explicit expressions for the helical twisting power of a chiral dopant in the nematic phase have been obtained in the mean field approximation taking into account chiral dispersion intermolecular interactions. The results of the theory enable one to explain a correlation between the signs of helical twisting power and circular dichroism of selected electronic transitions which have recently...
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