Abstract
A series of cellobiose octaalkanoates, Cel-II-n (n is the carbon number of the alkyl chain), with n = 7–14 were prepared and their mesogenic properties examined by differential scanning calorimetry, optical polarizing microscopy and X-ray diffraction. All of these compounds form enantiotropic discotic columnar phases, in which the columns are built up by a regular stacking of the cellobiose moieties and are packed in a two dimensional lattice. Homologues with n = 9-14 form the Dho phase only whilst the compound with n = 7 forms the Dro phase. The n = 8 compound forms the Dho phase at higher temperatures and the Dro phase at lower temperatures. Structural parameters obtained from X-ray diffraction studies are presented for both phases.
| Original language | English |
|---|---|
| Pages (from-to) | 337-345 |
| Number of pages | 9 |
| Journal | Liquid Crystals |
| Volume | 12 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jan 1 1992 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
Cite this
Columnar liquid crystals in oligosaccharide derivatives : II. Two types of discotic columnar liquid-crystalline phase of cellobiose alkanoates. / Takada, Akihiko; Fukuda, T.; Miyamoto, T.; Yakoh, Y.; Watanabe, J.
In: Liquid Crystals, Vol. 12, No. 2, 01.01.1992, p. 337-345.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Columnar liquid crystals in oligosaccharide derivatives
T2 - II. Two types of discotic columnar liquid-crystalline phase of cellobiose alkanoates
AU - Takada, Akihiko
AU - Fukuda, T.
AU - Miyamoto, T.
AU - Yakoh, Y.
AU - Watanabe, J.
PY - 1992/1/1
Y1 - 1992/1/1
N2 - A series of cellobiose octaalkanoates, Cel-II-n (n is the carbon number of the alkyl chain), with n = 7–14 were prepared and their mesogenic properties examined by differential scanning calorimetry, optical polarizing microscopy and X-ray diffraction. All of these compounds form enantiotropic discotic columnar phases, in which the columns are built up by a regular stacking of the cellobiose moieties and are packed in a two dimensional lattice. Homologues with n = 9-14 form the Dho phase only whilst the compound with n = 7 forms the Dro phase. The n = 8 compound forms the Dho phase at higher temperatures and the Dro phase at lower temperatures. Structural parameters obtained from X-ray diffraction studies are presented for both phases.
AB - A series of cellobiose octaalkanoates, Cel-II-n (n is the carbon number of the alkyl chain), with n = 7–14 were prepared and their mesogenic properties examined by differential scanning calorimetry, optical polarizing microscopy and X-ray diffraction. All of these compounds form enantiotropic discotic columnar phases, in which the columns are built up by a regular stacking of the cellobiose moieties and are packed in a two dimensional lattice. Homologues with n = 9-14 form the Dho phase only whilst the compound with n = 7 forms the Dro phase. The n = 8 compound forms the Dho phase at higher temperatures and the Dro phase at lower temperatures. Structural parameters obtained from X-ray diffraction studies are presented for both phases.
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UR - http://www.scopus.com/inward/citedby.url?scp=0000873914&partnerID=8YFLogxK
U2 - 10.1080/02678299208030401
DO - 10.1080/02678299208030401
M3 - Article
AN - SCOPUS:0000873914
VL - 12
SP - 337
EP - 345
JO - Liquid Crystals
JF - Liquid Crystals
SN - 0267-8292
IS - 2
ER -