The X-ray crystal structures and computational analysis of NH...π hydrogen bonded banana-shaped carbazole derivatives and thermal analysis of higher mesogenic homologues

Article abstract of DOI:10.1080/10587250108030006

The synthesis of a series of banana-shaped mesogenic structures has been carried out, in which the bend unit is formed by the 3,6-substitution of carbazole by 4-alkoxyphenyl moieties. The crystal structures of the methoxy and propyloxy derivatives are reported with an analysis of the N-H...π interactions that are observed in the crystalline state. This analysis was aided by semi-empirical molecular orbital calculations. Additionally, the thermal analysis of the complete series has been carried out in order to investigate the phase properties of these materials. The 4-nonyloxyphenyl derivative displays two melting points by DSC and normal light microscopy, but yields non-birefringent liquids. The incorporation of photorefractive molecular units, such as carbazole. into anisotropic materials may offer many advantages over conventional electrical poling of photorefractive polymers.

Full text of DOI:10.1080/10587250108030006

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Molecular Crystals and Liquid
Crystals Science and Technology.
Section A. Molecular Crystals and
Liquid Crystals
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The X-Ray Crystal Structures and
Computational Analysis of NH…π
Hydrogen Bonded Banana-Shaped
Carbazole Derivatives and Thermal
Analysis of Higher Mesogenic
Homologues
a
a
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Maura Belloni , M. Manickam , Peter R. Ashton , Benson
a
a
a
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M. Kariuki , Jon A. Preece , Neil Spencer & John Wilkie
a
School of Chemistry, University of Birmingham , Edgbaston,
Birmingham, B15 2TT, (UK)
Published online: 24 Sep 2006.
To cite this article: Maura Belloni , M. Manickam , Peter R. Ashton , Benson M. Kariuki , Jon
A. Preece , Neil Spencer & John Wilkie (2001) The X-Ray Crystal Structures and Computational
Analysis of NH…π Hydrogen Bonded Banana-Shaped Carbazole Derivatives and Thermal
Analysis of Higher Mesogenic Homologues, Molecular Crystals and Liquid Crystals Science
and Technology. Section A. Molecular Crystals and Liquid Crystals, 369:1, 17-35, DOI:
10.1080/10587250108030006
To link to this article: http://dx.doi.org/10.1080/10587250108030006
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