A new series of fluorinated salts, iodides and trifluoromethanesulfonates, was synthesized from 1,2,4-oxadiazolylpyridines. Their thermotropic properties were investigated by temperature resolved small angle and wide angle X-ray scattering, differential scanning and polarised optical microscopy. The UV–visible and photoluminescence properties studied for all compounds. The results showed for two compounds the existence of an mesomorphic smectic liquid crystal phase. All iodides showed thermochromism suggesting prospective applications in optoelectronics.
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Celso et al. (2007) studied this question.
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