There is provided a novel gelator containing a sugar derivative. A gelator including a compound of Formula (1) or Formula (2):
wherein each of R
1
and R
3
is independently a linear or branched alkyl group having a carbon atom number of 1 to 20, a cyclic C
3-20
alkyl group, or a linear or branched alkenyl group having a carbon atom number of 2 to 20, n is 0 or an integer of 1 to 4, R
2
is a hydrogen atom, a linear or branched alkyl group having a carbon atom number of 1 to 10, or an aryl group optionally having a substituent, and R
4
and R
5
are each a hydroxy group.
Structural variation of liquid crystalline trioxadecalins
作者:Volkmar Vill、Hanns-Walter Tunger、Markus von Minden
DOI:10.1039/jm9960600739
日期:——
Synthesis and mesogenic properties of new liquid crystals bearing a chiral trioxadecalin system are described. Boron-containing three-ring systems with a lateral methoxy group show cholesteric, TGBA and smectic A phases. Molecules containing four or five rings show mostly smectic C* phases. The insertion of a triple bond leads to ferroelectric smectic C* phases, but compounds with a flexible spacer between the rings show only monotropic smectic A phases. Lateral fluorination of the aromatic rings leads, depending on the position of the fluorine, either to stabilised smectic phases with lower transition temperatures or to cholesteric phases with complete suppression of all smectic phases.
本文描述了带有手性三氧杂萘烷体系的新型液晶的合成和介电性质。带有一个侧甲氧基的含硼三环系统显示出胆固醇相、TGBA 相和共晶 A 相。含有四环或五环的分子主要呈现出平滑的 C* 相。插入一个三键会导致铁电共晶 C* 相,但环间有柔性间隔的化合物只显示单向共晶 A 相。根据氟的位置,芳香环的侧向氟化会导致过渡温度较低的稳定共晶相或完全抑制所有共晶相的胆甾相。
NOVEL SUGAR-DERIVED GELLING AGENT
申请人:Kyushu University
公开号:EP2824157A1
公开(公告)日:2015-01-14
There is provided a novel gelator containing a sugar derivative. A gelator comprising a compound of Formula (1) or Formula (2):
wherein each of R1 and R3 is independently a linear or branched alkyl group having a carbon atom number of 1 to 20, a cyclic C3-20 alkyl group, or a linear or branched alkenyl group having a carbon atom number of 2 to 20, n is 0 or an integer of 1 to 4, R2 is a hydrogen atom, a linear or branched alkyl group having a carbon atom number of 1 to 10, or an aryl group optionally having a substituent, and R4 and R5 are each a hydroxy group.