Beilstein J. Org. Chem.2009,5, No. 50, doi:10.3762/bjoc.5.50
; helicene; nematic liquid crystal; SurfaceChiralitymodel; Introduction
Nematic liquid crystals (LCs) are fluid phases formed by anisometric molecules which, though free to rotate as in ordinary liquids, are preferentially aligned along a common axis, called director. The addition of a chiral non-racemic
Chiralitymodel to shed light on the structural features responsible for the analogies and differences exhibited by these derivatives. The investigation of these dopants with well-defined geometry, by virtue of the low conformational freedom, and the substituents variously distributed around the core
efficient chiral inducers in biaryl nematic mesophases. In this paper, we focus on a new series of helicene-like molecules of known absolute configuration. We have integrated cholesteric pitch measurements with geometry optimization by DFT calculations and analysis of the twisting ability by the Surface
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Graphical Abstract
Figure 1:
Schematic structure of a right-handed chiral nematic (cholesteric) phase. Black arrows represent th...