A ferroelectric helical polymer

Chem Commun (Camb). 2024 Dec 16. doi: 10.1039/d4cc05250a. Online ahead of print.

Abstract

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 (PS) value ∼2 μC cm-2 and remanent polarization (Pr) value ∼1.8 μC cm-2 at a low coercive field (Ec) of 5.2 kV cm-1, rarely reported before for purely organic systems.