Cholesteric helix inversion: investigations on the influence of the terminal group on the inversion of the helical pitch in trioxadecalins
作者:Volkmar Vill、H. Markus von Minden、Duncan W. Bruce
DOI:10.1039/a700234c
日期:——
Synthesis and mesogenic properties of new liquid crystals, bearing a
chiral trioxadecalin system, are described. As cholesteric helix
inversions in trioxadecalin systems bearing a terminal cyano or nitro
group have previously been observed, the terminal group has been changed
systematically to elucidate its influence on the occurrence of inversions
of the helical pitch.
本文介绍了带有手性三氧杂萘烷体系的新型液晶的合成和介导性质。由于之前已观察到带有末端氰基或硝基的三氧杂萘烷体系中出现胆甾烷螺旋反转,因此我们系统地改变了末端基团,以阐明其对螺旋间距反转的影响。