A Storage Type Electrochromic Display Utilizing Poly-Co-QTPP Films

Abstract
A storage type electrochromic display is fabricated by a Poly-Co-quarternized 3,4-tetrapyridinoporphyrazine (Poly-Co-QTPP) film which is deposited on an In-Sn oxide (ITO) glass by electrochemical reduction. The reduced form of the Poly-Co-QTPP film is stored more than one month without electrical power and resists oxidation in the presence of oxygen.