Mukhopadhyay, Pritam and Bharadwaj, Parimal K and Savitha, G and Krishnan, A and Das, Puspendu K (2002) A new class of three dimensional D-pi-A trigonal cryptand derivatives for second-order nonlinear optics. In: Journal of Materials Chemistry, 12 (8). pp. 2237-2244.
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Synthesis, crystal structures, linear and nonlinear optical properties of tris D-pi-A cryptand derivatives with C-3 symmetry are reported. Three fold symmetry inherent in the cryptand molecules has been utilized for designing these molecules. Molecular nonlinearities have been measured by hyper-Rayleigh scattering (HRS) experiments. Among the compounds studied, L-1 adopts non-centrosymmetric crystal structure. Compounds L-1, L-2, L-3 and L-4 show a measurable SHG powder signal. These molecules are more isotropic and have significantly higher melting points than the classical p-nitroaniline based dipolar NLO compounds, making them useful for further device applications. Besides, different acceptor groups can be attached to the cryptand molecules to modulate their NLO properties.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to Royal Society of Chemistry.|
|Department/Centre:||Division of Chemical Sciences > Inorganic & Physical Chemistry|
|Date Deposited:||04 Aug 2011 05:45|
|Last Modified:||04 Aug 2011 05:45|
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