Multielectrochromic property of N-phenylnaphthalen-2-amine and N-(4-(1H-pyrrol-1-yl)phenyl)-N-phenylnaphthalen-2-amine

► BNA, NAP and their polymers can be easily obtained. ► Film PBNA and PNAP both exhibit five colors under different potentials. ► Film PBNA and PNAP have reasonable good stability. ► Film PBNA and PNAP show comparatively fast switching time.