The x-ray crystal structures and computational analysis of NH...pi hydrogen bonded bana-shaped carbazole derivatives and thermal analysis of higher mesogenic homologues

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@article{c48d9d8fae0643ff9e481cbec40e3d35,
title = "The x-ray crystal structures and computational analysis of NH...pi hydrogen bonded bana-shaped carbazole derivatives and thermal analysis of higher mesogenic homologues",
abstract = "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...pi 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.",
keywords = "banana, liquid crystals, N-H...pi hydrogen bonding, carbazole",
author = "Maura Belloni and Mayandithevar Manickam and Peter Ashton and Benson Kariuki and Jon Preece and Neil Spencer and John Wilkie",
year = "2001",
month = oct,
day = "1",
doi = "10.1080/10587250108030006",
language = "English",
volume = "369",
pages = "17--35",
journal = "Molecular Crystals and Liquid Crystals",
issn = "1058-725X",
publisher = "Taylor & Francis",
number = "1",

}

RIS

TY - JOUR

T1 - The x-ray crystal structures and computational analysis of NH...pi hydrogen bonded bana-shaped carbazole derivatives and thermal analysis of higher mesogenic homologues

AU - Belloni, Maura

AU - Manickam, Mayandithevar

AU - Ashton, Peter

AU - Kariuki, Benson

AU - Preece, Jon

AU - Spencer, Neil

AU - Wilkie, John

PY - 2001/10/1

Y1 - 2001/10/1

N2 - 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...pi 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.

AB - 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...pi 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.

KW - banana

KW - liquid crystals

KW - N-H...pi hydrogen bonding

KW - carbazole

U2 - 10.1080/10587250108030006

DO - 10.1080/10587250108030006

M3 - Article

VL - 369

SP - 17

EP - 35

JO - Molecular Crystals and Liquid Crystals

JF - Molecular Crystals and Liquid Crystals

SN - 1058-725X

IS - 1

ER -