Rhodamine derivatives dyes, color-conversion-layer and uses thereof

• US 10,059,843 B2
• Filed: 06/14/2017
• Issued: 08/28/2018
• Est. Priority Date: 11/16/2015
• Status: Active Grant

• Current Assignee: Moleculed Ltd.
• Original Assignee: StoreDot Ltd.
• Inventors: Kuks, Evgenia Liel, Schwarz, Rony, Sella, Eran, Armon, Mor Shmuel, Szwarcman, Daniel
• Primary Examiner(s): Aulakh, Charanjit
• Application Number:
  US15/622,158
• Publication Number:
  US 20170283616A1
• Time in Patent Office: 440 Days
• Field of Search: 546 37, 313504
• CPC Class Codes: C09B 11/24 Phthaleins containing amino groups ; Phthalanes; Fluoranes; Phthalides; Rhodamine dyes; Phthaleins having heterocyclic aryl rings; Lactone or lactame forms of triarylmethane dyes
• CPC Class Codes: C09B 69/008 Dyes containing a substituent, which contains a silicium atom
• CPC Class Codes: C09B 69/103 containing a diaryl- or triarylmethane dye
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1048 with oxygen
• CPC Class Codes: F21V 9/30 Elements containing photoluminescent material distinct from or spaced from the light source shades F21V1/17; globes, bowls or cover glasses F21V3/08, F21V3/12; refractors F21V5/10; reflectors F21V7/26, F21V7/30; elements with provision for controlling the spectral properties or intensity F21V9/40
• CPC Class Codes: G02F 1/133614 using photoluminescence, e.g. phosphors illuminated by UV or blue light
• CPC Class Codes: G02F 1/133617 Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
• CPC Class Codes: G03F 7/0007 Filters, e.g. additive colour filters; Components for display devices
• CPC Class Codes: H10K 85/611 Charge transfer complexes
• CPC Class Codes: H10K 85/636 comprising heteroaromatic hydrocarbons as substituents on the nitrogen atom
• CPC Class Codes: H10K 85/657 Polycyclic condensed heteroaromatic hydrocarbons
• CPC Class Codes: H10K 85/6572 comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole

Abstract

This invention is directed to photoluminescent compounds based on rhodamine dyes with red-shifted absorption and emission maxima and uses thereof for photoluminescence based devices.

Claims

1. A photoluminescent compound represented by the structure of formula (I):

2. The photoluminescent compound of claim 1, wherein said compound is represented by the structure of formula (II):

3. The photoluminescent compound of claim 1, wherein said compound is represented by the structure of formula (III):

4. 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, tetraflouroborate hexaflourophosphate, hypophosphite, phosphate, phosphite, cyanate, cyanide, isocyanate, thiocyanate, tetralkylborates, tetraarylborates or chromate.

5. A photoluminescent device comprising a color-conversion-layer comprising a photoluminescent compound according to claim 1.

6. A photoluminescent device comprising a color-conversion-layer comprising a photoluminescent compound according to claim 2.

7. A photoluminescent device comprising a color-conversion-layer comprising a photoluminescent compound according to claim 3.

8. The photoluminescent device of claim 5, wherein said anion is a sulfate, chloride, bromide, iodide, perchlorate, nitrate, trifluoroacetate, hydroxide, hydrosulfide, sulfide, nitrite, carboxylate, dicarboxylate, sulfonate, tetraflouroborate hexaflourophosphate, hypophosphite, phosphate, phosphite, cyanate, cyanide, isocyanate, thiocyanate, tetralkylborates, tetraarylborates or chromate.

9. The photoluminescent device of claim 5 wherein said color-conversion-layer is in a form of a film.

10. The photoluminescent device of claim 5, wherein said device is integrated in a display device.

11. The photoluminescent device of claim 9, wherein said device is integrated in a display device.