Triphenylene/carbazole mesogens and their electrochemistry

M Manickam, Graeme Cooke, Sandeep Kumar, Peter R Ashton, Jon A Preece, Neil Spencer

Research output: Contribution to journalArticle

Abstract

The synthesis of 10 discotic mesogens is described in which the well-known hexaalkyloxytriphenylene liquid crystalline core has been covalently linked to incorporate one and three carbazole moieties. These modifications have been achieved by the esterification of mono and tris hydroxy triphenylene derivatives with carboxylic acids incorporating 3,6-bisalkylated or 3,6-bisacylated carbazole moieties. The pure compounds are not liquid crystalline and neither are they when doped with TNF, unlike similar materials that were reported previously, where the carbazole moiety was not 3,6-bisalklylated or 3,6-bisacylated, which when doped with TNF did display mesophases. The solution state cyclic voltammetry of selected materials is reported.

Original languageEnglish
Pages (from-to)99/[399]-116/[416]
Number of pages18
JournalMolecular Crystals and Liquid Crystals
Volume397
DOIs
Publication statusPublished - 2003

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Electrochemistry
Crystalline materials
Esterification
Liquids
Carboxylic Acids
Cyclic voltammetry
Derivatives
triphenylene
carbazole

Keywords

  • Anisotropic ordering
  • Carbazole
  • Discotic liquid crysals
  • Electrochemistry
  • Photorefractive

Cite this

Manickam, M., Cooke, G., Kumar, S., Ashton, P. R., Preece, J. A., & Spencer, N. (2003). Triphenylene/carbazole mesogens and their electrochemistry. Molecular Crystals and Liquid Crystals, 397, 99/[399]-116/[416]. https://doi.org/10.1080/15421400390214059
Manickam, M ; Cooke, Graeme ; Kumar, Sandeep ; Ashton, Peter R ; Preece, Jon A ; Spencer, Neil. / Triphenylene/carbazole mesogens and their electrochemistry. In: Molecular Crystals and Liquid Crystals. 2003 ; Vol. 397. pp. 99/[399]-116/[416].
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Manickam, M, Cooke, G, Kumar, S, Ashton, PR, Preece, JA & Spencer, N 2003, 'Triphenylene/carbazole mesogens and their electrochemistry', Molecular Crystals and Liquid Crystals, vol. 397, pp. 99/[399]-116/[416]. https://doi.org/10.1080/15421400390214059

Triphenylene/carbazole mesogens and their electrochemistry. / Manickam, M; Cooke, Graeme; Kumar, Sandeep; Ashton, Peter R; Preece, Jon A; Spencer, Neil.

In: Molecular Crystals and Liquid Crystals, Vol. 397, 2003, p. 99/[399]-116/[416].

Research output: Contribution to journalArticle

TY - JOUR

T1 - Triphenylene/carbazole mesogens and their electrochemistry

AU - Manickam, M

AU - Cooke, Graeme

AU - Kumar, Sandeep

AU - Ashton, Peter R

AU - Preece, Jon A

AU - Spencer, Neil

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AB - The synthesis of 10 discotic mesogens is described in which the well-known hexaalkyloxytriphenylene liquid crystalline core has been covalently linked to incorporate one and three carbazole moieties. These modifications have been achieved by the esterification of mono and tris hydroxy triphenylene derivatives with carboxylic acids incorporating 3,6-bisalkylated or 3,6-bisacylated carbazole moieties. The pure compounds are not liquid crystalline and neither are they when doped with TNF, unlike similar materials that were reported previously, where the carbazole moiety was not 3,6-bisalklylated or 3,6-bisacylated, which when doped with TNF did display mesophases. The solution state cyclic voltammetry of selected materials is reported.

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KW - Carbazole

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KW - Electrochemistry

KW - Photorefractive

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Manickam M, Cooke G, Kumar S, Ashton PR, Preece JA, Spencer N. Triphenylene/carbazole mesogens and their electrochemistry. Molecular Crystals and Liquid Crystals. 2003;397:99/[399]-116/[416]. https://doi.org/10.1080/15421400390214059