Abstract
Stabilization of the ionic state and formation of polymethine dye with intense absorption in visible region by azulene skeleton are applied for the creation of novel polyelectrochromic materials. A new structural principle for the preparation of the polyelectrochromic system with high thermodynamic stability is proposed. The system is consisted with the polymethine dye containing the moieties of either one or two cyanine dyes as end groups. Multiple-color change was established by the use of azulene as a redox active chromophore on the principle of the cyanine-cyanine hybrid. The scope of the creation of novel polyelectrochromic materials taking full advantage of azulene skeleton and the new principle to design polyelectrochromic system is demonstrated by several examples.
