Ivan H Rouil (4 results)
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Taschenbuch. Condition: Neu. Heterocyclic Liquid Crystal Materials | Synthesis and Characterization of Some Novel Heterocyclic Liquid Crystalline Compounds and Polymers | Ivan H. Rouil (u. a.) | Taschenbuch | Englisch | LAP Lambert Academic Publishing | EAN 9783843373197 | Verantwortliche Person für die EU: preigu GmbH & Co. KG,… Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.
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Condition: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Rouil Ivan H.Ivan Rouil, Ph.D, M.Sc. and B.Sc. from University of Baghdad. He is currently Assistant Professor of Organic Chemistry at Al-Mustansryia University, Baghdad, Iraq.In this work synthesis and… characterization of a nov.
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Taschenbuch. Condition: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - In this work synthesis and characterization of a novel series of compounds, polymers containing 1,3,4-thiadiazole and 1,2,4-triazole units are described. All of these materials in this study are characterized by FTIR, 1HNMR, 13CNMR, Mass… and UV spectroscopy. The liquid crystalline properties of the prepared compounds were verified using differential scanning calorimeter (DSC) and hot-stage optical polarizing microscopy (OPM). The first series of this study containing two 1,3,4-thiadiazole Schiff bases rings connected with two terminal alkoxyphenyl rings. These compounds exhibited eneantiotripic nematic and smectic phases while other compounds did not exist any liquid crystalline behaviours. To comparison the liquid crystalline behaviour of these compounds, the two series having the azoxy groups instead of azomethine groups was synthesized. The difference between the azomethine compounds with that of azoxy group, The latter compounds did not show any liquid crystalline properties. Polyesters and polyethers were also prepared and found that all polymers did not show liquid crystalline properties but simply go to the glass transition temperatures Tg and then to isotropic melt.
