We studied electrochromic properties (EC) of phthalate derivatives (TP), which showed reversible color change from colorless clear to three primary colors by electrochemical reaction, from a viewpoint of color electronic paper. To improve the ability of keeping coloring state under an open circuit, we successfully prepared terephthalate-derivative/TiO(2)-modified electrode and evaluated its EC properties. TP film also showed reversible color change from clear to magenta and enabled not only keeping the coloring state longer under open-circuit condition but also good bleaching response under short-circuit condition. (C) 2009 Elsevier B.V. All rights reserved.