Phthalocyanine nanosphere, preparation method thereof, and color filter

Patent metadata

Field	Value
Publication number	US-11352364-B2
Application number	US-201916626240-A
Country	US
Kind code	B2
Filing date	Dec 13, 2019
Priority date	Nov 28, 2019
Publication date	Jun 7, 2022
Grant date	Jun 7, 2022

Abstract

A method for preparing phthalocyanine nanospheres is provided, including: synthesizing an ionic phthalocyanine molecule of formula I according to a following chemical scheme:wherein M is Cu or Zn, X is Br or Cl, R1, R2, R3, and R4 are aromatic substituent groups; dissolving at least one ionic phthalocyanine molecule selected from the formula I in a solvent to form a solution; preparing a two-dimensional layer crystalline material with an opposite charge to the ionic phthalocyanine molecule; adding the two-dimensional layer crystalline material to the solution; heating the solution to evaporate a portion of the solvent to aggregate the ionic phthalocyanine molecule into phthalocyanine nanospheres between a film layer of the two-dimensional layer crystalline material; and separating the phthalocyanine nanospheres from the film layer of the two-dimensional layer crystalline material.

First claim

What is claimed is:

1. A method for preparing phthalocyanine nanospheres, comprising:
synthesizing ionic phthalocyanine molecules of formula I according to a following chemical scheme:

wherein M is Cu or Zn, X is Br or Cl, and R 1 , R 2 , R 3 , and R 4 are each independently selected from one of:

dissolving the ionic phthalocyanine molecules selected from at least one chemical structure of the formula I in a solvent to form a solution;
preparing graphene flakes with an opposite charge to the ionic phthalocyanine molecules;
adding the graphene flakes to the solution;
heating the solution to evaporate a portion of the solvent to aggregate the ionic phthalocyanine molecules into phthalocyanine nanospheres between film layers of the graphene flakes; and
purifying and separating the phthalocyanine nanospheres from the film layers of the graphene flakes.

2. The method according to claim 1 , wherein the method for preparing the graphene flakes comprises following steps:
providing a metal as a cathode and a graphene rod as an anode, and placing the metal and the graphene rod in a container containing an electrolyte solution and conductive ions; and
applying current to the metal and the graphene rod with a DC voltage to cause the electrolyte solution generating a gas; and the gas and the conductive ions penetrate into an interlayer gap of the graphene rod so that the graphene rod forms the graphene flakes having a two-dimensional layer structure.

3. The method according to claim 2 , wherein the metal is platinum.

4. The method according to claim 2 , wherein the DC voltage is 5V, and the two-dimensional layer structure of the graphene flakes has an interlayer distance between 20 nm and 40 nm.

5. The method according to claim 2 , wherein the interlayer distance of the two-dimensional layer structure is adjusted by changing a magnitude of the DC voltage.

6. A method for preparing phthalocyanine nanospheres, comprising:
synthesizing ionic phthalocyanine molecules of formula I according to a following chemical scheme:

wherein M is Cu or Zn, X is Br or Cl, and R 1 , R 2 , R 3 , and R 4 are each independently selected from one of:

dissolving the ionic phthalocyanine molecule selected from at least one chemical structure of the formula I in a solvent to form a solution;
preparing a two-dimensional layer crystalline material with an opposite charge to the ionic phthalocyanine molecules;
adding the two-dimensional layer crystalline material to the solution;
heating the solution to evaporate a portion of the solvent to aggregate the ionic phthalocyanine molecules into phthalocyanine nanospheres between film layers of the two-dimensional layer crystalline material; and
purifying and separating the phthalocyanine nanospheres from the film layers of the two-dimensional layer crystalline material.

7. The method according to claim 6 , wherein the two-dimensional layer crystalline material is graphene flakes.

8. The method according to claim 7 , wherein the method for preparing the graphene flakes comprises following steps:
providing a metal as a cathode and a graphene rod as an anode, and placing the metal and the graphene rod in a container containing an electrolyte solution and conductive ions; and
applying current to the metal and the graphene rod with a DC voltage to cause the electrolyte solution generating a gas; the gas and the conductive ion penetrate into an interlayer gap of the graphene rod so that the graphene rod forms the graphene flakes having a two-dimensional layer structure.

9. The method according to claim 8 , wherein the DC voltage is 5V, and the two-dimensional layer structure of the graphene flakes has an interlayer distance between 20 nm and 40 nm.

10. The method according to claim 8 , wherein the interlayer distance of the two-dimensional layer structure is adjusted by changing a magnitude of the DC voltage.

11. A phthalocyanine nanosphere, comprising a group selected from following ionic phthalocyanine molecules:

wherein M is Cu or Zn, X is Br or Cl, R 1 , R 2 , R 3 , and R 4 are each independently selected from one of:

12. The phthalocyanine nanosphere according to claim 11 , wherein a particle size of the phthalocyanine nanosphere is between 10 and 30 nm.

13. A color filter, comprising:
a substrate and a photoresist layer disposed on the substrate, the photoresist layer comprising the phthalocyanine nanosphere according to claim 11 .

Assignees

• Tcl China Star Optoelectronics Tech Co Ltd

Inventors

• Ai Lin

Classifications

• G02B5/20

  Filters (polarising elements G02B5/30) · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• G02B5/201

  in the form of arrays · CPC title

• C01B32/182

  Graphene · CPC title

• C07F1/08

  Copper compounds · CPC title