Covalent compound having a radical-cationic moiety covalently linked to a radical anionicmoiety
US5563273A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1994 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Feb 9, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B1/121
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.