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

doi:10.1039/b805235b

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

School of Chemistry and Chemical Engineering

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

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.

Original language	English
Pages (from-to)	2172-2185
Number of pages	14
Journal	Soft Matter
Volume	4
Issue number	11
Early online date	07 Aug 2008
DOIs	https://doi.org/10.1039/b805235b
Publication status	Published - 14 Oct 2008

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics

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10.1039/b805235b

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title = "Rigid tetracatenar liquid crystals derived from 1,10-phenanthroline",

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.",

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

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doi = "10.1039/b805235b",

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T1 - Rigid tetracatenar liquid crystals derived from 1,10-phenanthroline

AU - Cardinaels, T.

AU - Ramaekers, J.

AU - Nockemann, Peter

AU - Driesen, K.

AU - Van Hecke, K.

AU - Van Meervelt, L.

AU - Wang, G.

AU - De Feyter, S.

AU - Iglesias, E.F.

AU - Guillon, D.

AU - Donnio, B.

AU - Binnemans, K.

AU - Bruce, D.W.

PY - 2008/10/14

Y1 - 2008/10/14

N2 - 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.

AB - 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.

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U2 - 10.1039/b805235b

DO - 10.1039/b805235b

M3 - Article

SN - 1744-683X

VL - 4

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EP - 2185

JO - Soft Matter

JF - Soft Matter

IS - 11

ER -

Rigid tetracatenar liquid crystals derived from 1,10-phenanthroline

Abstract

ASJC Scopus subject areas

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