Rhodamine derivatives dyes and uses thereof
This invention is directed to photoluminescent compounds based on rhodamine dyes with green emission and uses thereof for photoluminescence based devices.
1. A photoluminescent compound represented by the structure of formula 8, 9, 10, 11, 12, 15 or 16:
wherein X − is an anion.
2. The photoluminescent compound of claim 1 , wherein said anion is a sulfate, chloride, bromide, iodide, perchlorate, nitrate, trifluoroacetate, hydroxide, hydrosulfide, sulfide, nitrite, carboxylate, dicarboxylate, sulfonate, tetrafluoroborate, hexafluorophosphate, hypophosphite, phosphate, phosphite, cyanate, cyanide, isocyanate, thiocyanate, tetralkylborate, tetraarylborate or chromate.
3. A photoluminescent device comprising a color-conversion-layer comprising a photoluminescent compound according to claim 1 .
4. The photoluminescent device of claim 3 , wherein said color-conversion-layer comprises a compound of formula 8, 9, 10, 11, 12, 15, 16 or combination thereof.
5. The photoluminescent device of claim 3 , wherein said color-conversion-layer is in a form of a film.
6. The photoluminescent device of claim 3 , wherein said device includes a color conversion film comprising said color conversion layer.
7. The photoluminescent device of claim 3 , wherein the color conversion layer in said device comprises an emission peak between 520-560 nm and FWHM between 30-55 nm.