Chiral Polyacetylene-PDMS-Copolymer-Gels as Enantiodifferentiating Alignment Media.

Helically chiral polyaryl acetylenes based on 4-ethinylated benzoic acid amid derivatives of different amino acids crosslinked by polydimethyl siloxane diynes form stable gels suited as new chiral SAG (strain-induced alignment in a gel) media. Their robust synthesis is hardly error-prone; they swell in CDCl3, dichloromethane, THF and toluene; the alignment strength is scalable; and their ability to differentiate the enantiomers of chiral analytes is unrivaled as compared with other SAG media.