Four reverse opal structured PEDOT (R-PEDOT) films with different pore size are obtained via electrochemical deposition of PEDOT on PS opal templates and then removal of the PS microspheres. The surface morphology, reflection spectra and electrochromic properties of the R-PEDOT films are measured. SEM images clearly show the R-PEDOT films have ordered 3D nano-sized hemispherical pore as face-centered cubic structure, which are typical reverse opal structures. When being observed from different angles, all the R-PEDOT films present rainbow effect. Besides, the four R-PEDOT films have similar electrochemical performance, higher current values and larger rectangular areas in an order of R-PEDOT₂₄₂ > R-PEDOT₁₇₃ > R-PEDOT₃₁₈ > R-PEDOT₂₉₀ > PEDOT. Compared with the pure PEDOT film, the R-PEDOT films have increased contrasts, higher chromatism values and richer color information. Unexpectedly, their response times have decreased a little, which may result from the poor adhesion between R-PEDOT films and the ITO glass surface. To sum up, the R-PEDOT films have better electrochromic properties than the pure PEDOT film, and no linear relationship exists between electrochromic properties and their pore size.

通过将PEDOT电化学沉积在PS蛋白石模板上，然后去除PS微球，可获得具有不同孔径的四张反蛋白石结构化PEDOT（R-PEDOT）膜。测量了R-PEDOT膜的表面形态，反射光谱和电致变色性能。SEM图像清楚地表明，R-PEDOT膜具有3D纳米尺寸的半球形孔作为面心立方结构，这是典型的反蛋白石结构。从不同角度观察时，所有R-PEDOT膜均呈现彩虹效果。此外，这四个R-PEDOT膜具有相似的电化学性能，更高的电流值和更大的矩形区域，依次为R-PEDOT ₂₄₂  > R-PEDOT ₁₇₃  > R-PEDOT ₃₁₈  > R-PEDOT₂₉₀  > PEDOT。与纯PEDOT胶片相比，R-PEDOT胶片具有更高的对比度，更高的色度值和更丰富的色彩信息。出乎意料的是，它们的响应时间略有减少，这可能是由于R-PEDOT膜与ITO玻璃表面之间的粘合力差所致。综上所述，R-PEDOT膜具有比纯PEDOT膜更好的电致变色性能，并且电致变色性能与其孔径之间不存在线性关系。