Photoluminescent compounds and uses thereof

• US 10,240,042 B2
• Filed: 07/27/2017
• Issued: 03/26/2019
• Est. Priority Date: 08/31/2016
• Status: Active Grant

• Current Assignee: Moleculed Ltd.
• Original Assignee: StoreDot Ltd.
• Inventors: Kuks, Evgenia Liel (Jeny), Schwarz, Rony, Sella, Eran, Armon, Mor Shmuel, Szwarcman, Daniel
• Primary Examiner(s): Mauro, John M
• Application Number:
  US15/661,151
• Publication Number:
  US 20180057689A1
• Time in Patent Office: 607 Days
• CPC Class Codes: C07D 311/82 Xanthenes
• 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: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1022 bridged by heteroatoms, e.g. N, P, Si or B
• CPC Class Codes: C09K 2211/1088 containing oxygen as the only heteroatom
• 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

Abstract

This invention is directed to photoluminescent compounds based on rhodamine dyes with green emission and uses thereof for photoluminescence based devices.

Claims

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

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

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

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

5. 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, tetra-alkylborate, tetra-arylborate or chromate.

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

7. The photoluminescent device of claim 6, wherein said color-conversion-layer is in a form of a film.

8. The photoluminescent device of claim 7, wherein said photoluminescent compound comprises an emission peak between 520-560 nm and FWHM between 30 and 55 nm.