<p>An electrochemical color change cell incorporating as a color changing agent intramolecular charge transfer salt or an intermolecular charge transfer salt. The intermolecular charge transfer salts and the intramolecular charge transfer salts have a plurality of oxidation states and a wide variation in color change. The intermolecular and intramolecular charge transfer salts preferably contain a violene moiety and a moiety having a carbonyl group conjugated to an aromatic moiety. The intramolecular charge transfer salts have a stable covalent radical-anion/radical-cation configuration. The intermolecular charge transfer salts have a stable ionic radical-anion/radical-cation configuration.</p>
申请公布号
EP0431547(A2)
申请公布日期
1991.06.12
申请号
EP19900123188
申请日期
1990.12.04
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
BUCHWALTER, STEPHEN L.;GOLDBERG, MARTIN J.;IYENGAR, REVATHI;O'TOOLE, TERRENCE R.;VIEHBECK, ALFRED