Rigid tetracatenar liquid crystals derived from 1,10-phenanthroline

T. Cardinaels, J. Ramaekers, Peter Nockemann, K. Driesen, K. Van Hecke, L. Van Meervelt, G. Wang, S. De Feyter, E.F. Iglesias, D. Guillon, B. Donnio, K. Binnemans, D.W. Bruce

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29 Citations (Scopus)


Tetracatenar liquid crystals were obtained by substituting the 1,10-phenanthroline central core unit at the 3- and 8-positions by extended, rigid acetylene moieties, equipped at the termini with two alkoxy chains of various lengths (n = 6, 8, 10, 12, 14). The liquid crystals exhibit a rich mesomorphism including smectic C, cubic, hexagonal and rectangular columnar phases, depending on the alkoxy chain length. The corresponding rhenium(I) complexes containing the bulky [ReBr(CO)3] fragment are not liquid-crystalline. The ligands and rhenium(I) complexes were investigated by scanning tunneling microscopy (STM). Both the ligands and the rhenium(I) complexes can be self-assembled into monolayers at the TCB–graphite and octanoic acid–graphite interfaces. The ligands and rhenium(I) complexes are luminescent.

Original languageEnglish
Pages (from-to)2172-2185
Number of pages14
JournalSoft Matter
Issue number11
Early online date07 Aug 2008
Publication statusPublished - 14 Oct 2008

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics


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