Abstract:

Arylacetylenes are precursors for the construction of conjugated polyarylacetylenes, which have been widely used in the preparation of helical artificial polymers for applications in a variety of fields. The design, synthesis and application of helical polymers with helix direction control, have become a field of great interest in recent years. Physical, chemical and electric stimuli interfere dramatically in structure, form and morphology of these polymers, resulting in great importance to achieve smart materials. In achiral (poli)arylacetylenes, the macromolecular helicity with a preferential direction of the helix can be induced by the presence of a chiral component, incorporated into the main chain or into the mesogenic units, making the polymer to serve as a chiral sensor. Rod-shaped helical polymers with an excess of one of the propellers, frequently show chiral liquid-crystalline phase. Given the importance of these polymers, herein we present a study of synthetic conditions for preparing arylacetylenes from national industry byproducts, cardanol (1) (as pendant and mesogenic unit) and glycerol (chiralityinducer) aiming to obtain innovative helical chiral polymers with liquid crystalline features.