Smectic phases of liquid crystals based on dinuclear palladium(II) complexes with carboxylato bridge

✍ Scribed by V. Cîrcu; C. M. Simonescu

• Book ID: 102126691
• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 200 KB
• Volume: 45
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.201000062

✦ Synopsis

Abstract

In this paper we present the preparation and the investigation of the liquid crystal properties of a series of dinuclear carboxylato bridge Pd(II) complexes bearing six alkoxy peripheral chains in the molecule. Their structures were assigned based on elemental analysis, IR and ^1^H NMR spectroscopy whereas the thermal behaviour was investigated by polarizing optical microscopy and differential scanning calorimetry. The monotropic smectic A phase displayed by these materials was identified by miscibility studies with a previously reported mesogen. It was found that the transition temperatures and the SmA mesophase stability depend on the alkyl chain length of the carboxylato bridge. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)