CPC C09K 9/02 (2013.01) [C08K 5/3432 (2013.01); C09B 11/20 (2013.01); C08K 2201/001 (2013.01); G02F 1/3615 (2013.01)] | 9 Claims |
1. A zwitterionic compound comprising a bridge moiety, an electron accepter moiety, and an electron donor moiety,
wherein the bridge moiety is covalently bonded to both the electron accepter moiety and to the electron donor moiety,
wherein the bridge moiety comprises one selected from xanthene and thioxanthene,
wherein the accepter moiety comprises a pyridinium moiety, and
wherein the donor moiety comprises a malononitrile moiety.
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