Thermally-transferable fluorescent europium complexes

Details Thermally-transferable fluorescent europium complexes Thermally-transferable fluorescent europium complexes

C - Chemistry, Metallurgy

09

K

31/128, 42/6

C09K 11/06 (2006.01) B41M 3/14 (2006.01) B41M 5/40 (2006.01)

Patent

CA 2036191

THERMALLY-TRANSFERABLE FLUORESCENT EUROPIUM COMPLEXES Abstract of the Disclosure A donor element for thermal transfer comprising a support having on one side thereof a fluorescent europium complex dispersed in a polymeric binder. In a preferred embodiment, the complex has the formula: Image wherein: D is a substituted or unsubstituted, aromatic, 5- or 6-membered carbocyclic or heterocyclic moiety; and J is -CF3, -CH3, -CH2F or -CHF2. In another preferred embodiment, the europium atom may also have attached thereto at least one monodentate ligand with an electron-donating oxygen or nitrogen atom or at least one bidentate ligand with two electron-donating oxygen, nitrogen or sulfur atoms atoms capable of forming a 5- or 6-membered ring with the europium atom.

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