Metallomesogens Where the Metal and Ligands Generate Helical Chirality

4 Metallomesogens Where the Metal and Ligands Generate Helical Chirality 

Comparative study of the racemic derivative (mc)-(6.30) and that with (A) configuration (A)-(6.30) shows that these complexes do not exhibit mesomorphism. As a monolayer at an aqueous surface they do show a significant difference in that the racemic form exists as aggregates while the derivative with (A)-(6.30) forms a uniform monolayer in which the molecules are vertically orientated. In this way, their doping properties in nematic phases have been studied. 

The technique of doping with enantiopure organic compounds is widely used in the liquid crystal industry. However, the hehcal potential of hexacoordinated transition metal complexes has been little explored. Nevertheless, the chiral induction power of 

Stanionary phase Synthetic Laponite + (A)-[Ru(phen)3] Eluent 1/4 chloroform methanol 

The molar htp fly = 5p /5x)(where x is the molar fraction of the doping agent and p is the pitch length (pm)) of the complex (A)-(6.30) was measured at room temperature 

---