Effect of fluorocarbon chains on the mesomorphic properties of chiral imines and their complexes with copper(II)

OCAK H., Bilgin-Eran B., TSCHIERSKE C., BAUMEISTER U., PELZL G.

JOURNAL OF MATERIALS CHEMISTRY, vol.19, no.38, pp.6995-7001, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 19 Issue: 38
  • Publication Date: 2009
  • Doi Number: 10.1039/b905104j
  • Journal Name: JOURNAL OF MATERIALS CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.6995-7001
  • Yıldız Technical University Affiliated: Yes

Abstract

The synthesis and mesomorphism of new chiral imine compounds incorporating a fluorocarbon chain which have calamitic molecular shape and their complexes with copper(II) are reported. The liquid crystalline properties were investigated using polarised optical microscopy, differential scanning calorimetry and X-ray diffraction. Imine compounds with a semifluorinated chain and a short chiral chain show chiral smectic mesophases with dramatically enhanced mesophase stabilities compared to the related hydrocarbon derivatives. In addition, the first examples of mesogenic chiral salicylaldiminate copper(II) complexes carrying semifluorinated alkyl chains at their peripheries have been synthesized and their liquid crystalline properties were investigated.