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A fully functional switchable chromic device (see Figure) in which complementary coloration is achieved from electrostatically assembled films containing poly(aniline) (PANI) and poly(3,4-ethylenedioxythiophene) (PEDOT) is demonstrated. The color changes accompanying doping and undoping are reversible and present true optical contrast.
DeLongchamp et al. (Thu,) studied this question.