Larger Spontaneous Polarization Ferroelectric Inorganic-Organic Hybrids: [PbI3]∞ Chains Directed Organic Cations Aggregation to Kagome-Shaped Tubular Architecture

Four isostructural inorganic-organic hybrid ferroelectric Compounds, assembled from achiral 3-R-benzylidene-1-aminopyridiniums (R = NO2, Br, Cl, or F for 1-4, respectively) and [PbI3](-) anions with the chiral Kagome-shaped tubular aggregating architecture, show larger spontaneous polarizations.