Study on poly-O-anisidine film with the properties of electrochromism and infrared emissivity modulation

The poly-O-anisidine (POA) electrochromic film was obtained by cyclic voltammetry method. The optical properties of the electrochromic film were investigated by UV–vis spectrophotometer and FT-IR spectroscopy. The results show that the different colors of the electrochromic film can be achieved, which exhibit as light yellow-green, light dark green and blue. The maximum difference of the UV–vis absorption of the film is about 40% between −0.5 V and 0.9 V and the biggest different average emissivity dynamic of the film is 0.553 in the wavelength of 8–14 μm regions.