Luminescent particle, ink formulation, polymer composition, optical device, fabrication of thereof, and use of the luminescent particle

Patent metadata

Field	Value
Publication number	US-2018215998-A1
Application number	US-201615745656-A
Country	US
Kind code	A1
Filing date	Jun 29, 2016
Priority date	Jul 17, 2015
Publication date	Aug 2, 2018
Grant date	—

Abstract

The present invention relates to a luminescent particle, ink formulation, polymer composition, optical device and a preparation thereof. The invention further relates to use of a luminescent particle in a medium or biological imaging.

First claim

1 . A luminescent particle ( 100 ), wherein the luminescent particle ( 100 ) comprises a nanosized phosphor ( 110 ), a polymer material ( 120 ) covering the nanosized phosphor ( 110 ), and a shell layer ( 130 ) covering the polymer material ( 120 ), wherein the shell layer ( 130 ) is selected from the group consisting of a metal hydroxide, metal carbonate hydroxide, metal polyphosphate and a combination of any of these.

2 . The luminescent particle ( 100 ) according to claim 1 , wherein the weight average molecular weight (Mw) of the polymer ( 120 ) is in the range from 1000 to 100000.

3 . The luminescent particle ( 100 ) according to claim 1 , wherein the polymer ( 120 ) further comprises an anchoring group selected from the group consisting of phosphate, phosphine, phosphine oxide, phosphonate, thiol, amino, carboxylate, carboxylic ester, hetero cycle, silane, sulfonate, hydroxyl and a combination of any of these.

4 . The luminescent particle ( 100 ) according to claim 1 , wherein the anchoring group is amino, phosphate, carboxylate, or a combination of any of these.

5 . The luminescent particle ( 100 ) according to claim 1 , wherein the polymer ( 120 ) is a branched polymer.

6 . The luminescent particle ( 100 ) according to claim 1 , wherein the nanosized phosphor ( 110 ) is a nanosized inorganic phosphor, or a quantum sized material.

7 . The luminescent particle ( 100 ) according to claim 1 , wherein the nanosized phosphor ( 110 ) further comprises a ligand ( 140 ) covering the shell layer ( 130 ).

8 . A method which comprises including the luminescent particle ( 100 ) according to claim 1 , in an optical device or biological imaging.

9 . Ink formulation comprising the luminescent particle ( 100 ) according to claim 1 , and solvent.

10 . A polymer composition comprising the luminescent particle ( 100 ) according to claim 1 , and a polymer matrix.

11 . An optical device comprising the luminescent particle ( 100 ) according to claim 1 .

12 . Method for preparing of the luminescent particle ( 100 ) according to claim 1 , wherein the method comprises the following sequential steps (a) and (b);
(a) mixing the nanosized phosphor and the polymer in solvent (b) mixing the polymer covered nanosized phosphor obtained from step (a) and a precursor of the shell layer in solvent.

13 . Method for preparing the ink formulation according to claim 9 , wherein the method comprises the step (x):
(x) mixing the luminescent particle and a solvent.

14 . Method for preparing the polymer composition according to claim 10 , wherein the method comprises the step (A):
(A) mixing the luminescent particle and a polymer.

Assignees

• Merck Patent Gmbh

Inventors

• Hirayama Yuki
• Okura Hiroshi
• Dertinger Stephan
• Kobayashi Yoshio

Classifications

• C09D11/50

  Sympathetic, colour changing or similar inks · CPC title

• G01N33/58

  involving labelled substances (G01N33/53 takes precedence) · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• C09K11/883

  with zinc or cadmium · CPC title

• C09K11/025 Primary

  non-luminescent particle coatings or suspension media · CPC title