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Issue 11, 2008
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Rigid tetracatenar liquid crystals derived from 1,10-phenanthroline

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Abstract

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.

Graphical abstract: Rigid tetracatenar liquid crystals derived from 1,10-phenanthroline

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Publication details

The article was received on 28 Mar 2008, accepted on 25 Jun 2008 and first published on 07 Aug 2008


Article type: Paper
DOI: 10.1039/B805235B
Citation: Soft Matter, 2008,4, 2172-2185
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    Rigid tetracatenar liquid crystals derived from 1,10-phenanthroline

    T. Cardinaels, J. Ramaekers, P. Nockemann, K. Driesen, K. Van Hecke, L. Van Meervelt, G. Wang, S. De Feyter, E. F. Iglesias, D. Guillon, B. Donnio, K. Binnemans and D. W. Bruce, Soft Matter, 2008, 4, 2172
    DOI: 10.1039/B805235B

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