Charge transfer salts and uses thereof

Details Charge transfer salts and uses thereof Charge transfer salts and uses thereof

C - Chemistry, Metallurgy

07

D

260/156, 345/6,

C07D 487/04 (2006.01) C07D 519/00 (2006.01) C09B 57/00 (2006.01) C09K 9/02 (2006.01) G02F 1/153 (2006.01) H01B 1/12 (2006.01)

Patent

CA 2031594

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.

Cellule à changement de couleur électrolytique intégrant comme agent de changement de couleur un sel de transfert de charge intramoléculaire ou un sel de transfert de charge intermoléculaire. Les sels de transfert de charge intermoléculaire et les sels de transfert de charge intramoléculaire possèdent plusieurs états d'oxydation et une grande variation dans le changement de couleur. Les sels de transfert de charge intermoléculaire et les sels de transfert de charge intramoléculaire contiennent, de préférence, une partie violène et une partie comportant un groupe carbonyle combiné à une partie aromatique. Les sels de transfert de charge intramoléculaire ont une configuration covalente stable radical-anion/radical-cation. Les sels de tranfert de charge intermoléculaire ont une configuration ionique stable radical-anion/radical-cation.

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