Sulfur as a Structural Element in Calamitic Liquid Crystals. 2 Terminal, Linking, Axial and Lateral Substitutions. 3 Sulfur-Containing Rings

Abstract

The effect on the physico-chemical properties of introducing the sulfur atom into the molecular structure of liquid crystals is discussed and rationalized in terms of existent theories; a comparison is made with the corresponding hydrocarbon and oxygen derivatives.

Keywords:

• Liquid crystals
• physico-chemical properties
• sulfur

Notes

^a Extrapolated from 10 wt% solution in ZLl-4792 at 20°C.

^b Extrapolated from 10 wt% solution in ZLI-1132 at 20°C.

^{c, d} Extrapolated from 15wt% solution in liquid crystal material at 25°C and 20°C, respectively.

^a Extrapolated from 10 wt% solution in ZLI-4792 at 20°C.

^b Extrapolated from 10 wt% solution in ZLI-1132 at 20°C.

^{c ,d} Extrapolated from 20 wt% solution in liquid crystal material at 25°C and 20°C, respectively.

^e Extrapolated from 10 wt% solution in liquid crystal material at 25°C.

^a Extrapolated from 10 wt% solution in ZLI-4792 at 20°C.

^b Extrapolated from 10 wt% solution in ZLI-1132 at 20°C.

^a Extrapolated from 10 wt% solution in ZLI-4792 at 20°C.

^b Extrapolated from 15 wt% solution in liquid crystal material at 20°C.

^a T_meas = T_SmC* − _SmA* − 20°C.

^a,b Extrapolated from 15 wt% solution in liquid crystal material at 25°C and 20°C, respectively.

^c Extrapolated from 10 wt% solution in ZLI-2857 at 20°C.

^d Extrapolated from 10 wt% solution in ZLI-4792 at 20°C.

^e Extrapolated from 10 wt% solution in ZLI-1132 at 20°C.

^a Extrapolated from 10 wt% solution in ZLI-2857 at 20°C.

^b Extrapolated from 10 wt% solution in ZLI-4792 at 20°C.

^a Extrapolated from 15 wt% solution in liquid crystal material at 25°C.

^b Extrapolated from 15 wt% solution in liquid crystal material Chisso at 25°C.

^c Extrapolated from 10 wt% solution in ZLI-1132 at 20°C.

^a Measured as 20 wt% solution in liquid crystal material at 20°C.

^a Extrapolated from 10 wt% solution in ZL1-4792 at 20°C.

^b Extrapolated from 15 wt% solution in liquid crystal material at 20°C.

T_meas = T_SmA–N −10°C.

^a C₅ homolog.