A ferroelectric helical polymer.

This communication introduces helical polyacetylene (P1) with an appended acceptor (A)-donor (D)-acceptor (A) conjugated chromophore as a promising ferroelectric candidate. The helical conformation of P1 leads to a highly stable chiral assembly of the appended ADA chromophores. This results in prominent ferroelectricity as evident from the superior hysteresis loop at room temperature, exhibiting a saturation polarization () value ∼2 μC cm and remanent polarization () value ∼1.8 μC cm at a low coercive field () of 5.2 kV cm, rarely reported before for purely organic systems.