Abstract
We have synthesized novel composites based on a 1-methyl-4-[2-(3-methoxy-4-oxocyclohexadienyliden)ethyliden]-1,4-dihydropyridine chromophore incorporated into a polymer PMMA host (weight content of 7.5%) deposited on the mica substrate. In the result of simultaneous application of external dc-electric field and thermal heating we have measured values of second order optical effect of about 122 pm/V at 1,064 nm fundamental laser wavelength. This effect show very weak reversibility after the dc-field switching off. Optical properties of the embedded compound were elucidated by means of IR–LD spectroscopy of oriented colloids in nematic host. UV-spectroscopy, 1H- and 13C-NMR methods were also used. Quantum chemical calculations have been carried out in order to describe electronic structure and optical properties.
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Kolev, T., Koleva, B., Kasperczyk, J. et al. Novel nonlinear optical materials based on dihydropyridine organic chromophore deposited on mica substrate. J Mater Sci: Mater Electron 20, 1073–1077 (2009). https://doi.org/10.1007/s10854-008-9828-5
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DOI: https://doi.org/10.1007/s10854-008-9828-5