Vinamidines and vinamidinium salts. New thermotropic liquid crystals

A. Zinsou IESPCI, Laboratoire de Chimie et Electrochimie des matériaux moléculaires, 10 rue Vauquelin, 75231, Paris, Cedex 05, France

M. Veber IESPCI, Laboratoire de Chimie et Electrochimie des matériaux moléculaires, 10 rue Vauquelin, 75231, Paris, Cedex 05, France; Laboratoire de Physique des Solides, Bâtiment 5 10, Université Paris Sud, 91405, Orsay, France

H. Strzelecka IESPCI, Laboratoire de Chimie et Electrochimie des matériaux moléculaires, 10 rue Vauquelin, 75231, Paris, Cedex 05, France

C. Jallabertz Laboratoire de Physique des Solides, Bâtiment 5 10, Université Paris Sud, 91405, Orsay, France

A. M. Leveluts Laboratoire de Physique des Solides, Bâtiment 5 10, Université Paris Sud, 91405, Orsay, France

Abstract

Following studies concerning mesomorphic heteroaromatic salts (pyrylium, thiopyrylium, dithiolium), we present here new thermotropic liquid crystal materials based on 1,5diazapentadienium (vinamidinium) salts and on the pseudocyclic vinamidine system (1,5-diazapentadiene). The mesomorphic properties of these systems have been studied by microscopic observations, DSC and X-ray diffraction.

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Vinamidines and vinamidinium salts. New thermotropic liquid crystals

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Vinamidines and vinamidinium salts. New thermotropic liquid crystals

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