A capacitor includes a first electrode, a second electrode, and a dielectric layer of molecular material disposed between said first and second electrodes. The molecular material is described by the general formula: Dp-(Core)-Hq, where Core is a polarizable conductive anisometric core, having conjugated π-systems, and characterized by a longitudinal axis, D and H are insulating substituents, and p and q are numbers of the D and H substituents accordingly. And Core possesses at least one dopant group that enhances polarizability.