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Paramagnetic liquid-crystalline complexes based on novel enaminoketone ligands |
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| Authors: | Wiesław Pyżuk Ewa Górecka Adam Krówczyński |
| Affiliation: | 1. Laboratory of Dielectrics and Magnetics, Department of Chemistry , University of Warsaw , 02-089 Warsaw, Al. ?wirki-Wigury, 101, Poland;2. Laboratory of Dielectrics and Magnetics, Department of Chemistry , University of Warsaw , 02-089 Warsaw, Al. ?wirki-Wigury, 101, Poland;3. Department of Pharmacy , Medical Academy , 02-097 Warsaw, Banacha, 1, Poland |
| Abstract: | Abstract Calamitic ligands having aminopropenone-3 ring substituted with alkyl-trans-cyclohexyl-phenyl and alkyl groups are low melting nematogens. Copper(II) complexed to the ligands gives thermally stable rod-like liquid crystals which exhibit an enantiotropic paramagnetic nematic phase. It is shown that modifications of the terminal groups as well as synthesis of asymmetric complexes enables us to extend the nematic range and depress the melting points. |
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