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Moscow, Russia

Geivandov R.Ch.,INCORFIN Ltd. Co | Mezhnev V.,INCORFIN Ltd. Co | Geivandova T.,INCORFIN Ltd. Co
Molecular Crystals and Liquid Crystals | Year: 2011

We have designed and synthesized a new series of liquid crystalline compounds with hybridized three-ring system based on bicyclo[2.2.2]octane unit together with fluorine substituted phenyl and biphenyl fragments. The key stages of the synthesis are alkylation of substituted benzene in concentrated sulfuric acid by bicyclo[2.2.2]octanoles and further cross-coupling between 3,4-difluorophenylboronic acid and the alkylation product. The influence of bicyclo[2.2.2]octane unit position in mesogenic core and fluorine substituents onto a phase transitions of the liquid crystals is discussed. Copyright © Taylor & Francis Group, LLC.


Geivandov R.Ch.,INCORFIN Ltd. Co | Mezhnev V.,INCORFIN Ltd. Co | Geivandova T.,INCORFIN Ltd. Co
Molecular Crystals and Liquid Crystals | Year: 2011

A new range of liquid crystals containing the 2,3,4,9-tetrahydro-1H- fluorene system have been prepared and its thermal properties were examined. The mesomorphic properties are compared with those of the fluorene and trans-cyclohexane derivatives. Introduction of 2,3,4,9-tetrahydro-1H-fluorene in typical liquid crystal structure leads to decrease of melting point and the clearing point values. The chemical structures and mesogenic properties for the reported novel compounds are discussed. Copyright © Taylor & Francis Group, LLC.

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