Title
Mesogenic ketohexose and aldopentose derivatives: Anomalous behaviour of the alkyl D-fructopyranosides
Author
van Doren, H.A.
van der Heijden, A.M.
de Goede, A.T.J.W.
van Rantwijk, F.
van Bekkum, H.
Centraal Instituut voor Voedingsonderzoek TNO
Publication year
2000
Abstract
The thermotropic and lyotropic behaviour of a number of alkyl ketopyranosides, alkyl ketofuranosides, an alkyl pentopyranoside and an alkyl pentofuranoside were studied. With the exception of the alkyl β-D-fructopyranosides, all the compounds display the expected smectic A* phases. The three alkyl fructopyranoside homologues studied (octyl, decyl and dodecyl) display a novel, rather viscous mesophase (monotropic), the nature of which is as yet unclear. The unknown phase is not a smectic A phase, because a phase transition from smectic A* to phase X is observed for both the decyl and the dodecyl derivative. The lyotropic behaviour of all the compounds in this study is quite similar to that reported earlier for other monoalkylated monosaccharide derivatives, except that the unknown phase X is again observed for the fructopyranoside derivatives.
Subject
Nutrition
Ketose
Monosaccharide
Pentose
Pyranoside
Nuclear magnetic resonance spectroscopy
Polarization microscopy
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http://resolver.tudelft.nl/uuid:71d6f2b7-3380-4df1-b2f9-4b4af7bbe203
TNO identifier
86977
ISSN
0267-8292
Source
Liquid Crystals, 27 (1), 63-68
Document type
article