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Method for preparing carboxyl polymeric copper phthalocyanine nanoparticles

A technology of nanoparticles and copper phthalocyanine, which is applied in the field of preparation of carboxyl-polymerized copper phthalocyanine nanoparticles, can solve the problems of unsuitability for industrial production, complex post-treatment process, and difficulty in nano-powder, and achieve controllable particle size and improved Dielectric and motor responsiveness, good compatibility effect

Inactive Publication Date: 2011-01-26
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the use of highly corrosive concentrated sulfuric acid, the operation is unsafe; there are too many types of stabilizers added at the same time, and it is difficult to obtain pure nano-powder; and because the post-treatment process is complicated, the cycle is long, and the cost is high, it is not suitable for industrial production.

Method used

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  • Method for preparing carboxyl polymeric copper phthalocyanine nanoparticles
  • Method for preparing carboxyl polymeric copper phthalocyanine nanoparticles
  • Method for preparing carboxyl polymeric copper phthalocyanine nanoparticles

Examples

Experimental program
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Effect test

Embodiment 1

[0024] 1) At normal temperature, add 0.05g of carboxyl polymerized copper phthalocyanine (O-CuPc) solid into 20ml of 0.01mol / L sodium hydroxide solution, and stir magnetically until O-CuPc is completely dissolved;

[0025] 2) under mechanical stirring, 0.1g polyethylene glycol monomethyl ether (MPEG, number average molecular weight is 600) is dissolved in the dilute hydrochloric acid of 100ml 0.2mol / L, obtains completely transparent dispersion;

[0026] 3) Place the surfactant dispersion liquid prepared in step 2) in an ice-water bath, and under mechanical stirring conditions, dropwise add the carboxyl polymerized copper phthalocyanine solution prepared in step 1) at a speed of 40ul per 5 seconds, A blue transparent solution is obtained, which is dialyzed in ultrapure water (resistance value 18MΩ) with a dialysis bag until the pH of the dialysate is 7 and does not contain other impurities, to obtain a stable blue transparent colloidal solution;

[0027] 4) After adding 50ml of...

Embodiment 2

[0030] 1) At room temperature, add 0.1 g of carboxyl polymerized copper phthalocyanine (O-CuPc) to 30 ml of 0.005 mol / L sodium hydroxide solution, and stir magnetically until the O-CuPc is completely dissolved;

[0031] 2) under mechanical stirring, 0.15g polyethylene glycol (PEG, number-average molecular weight is 8000) is dissolved in the dilute sulfuric acid of 150ml 1mol / L, obtains completely transparent dispersion liquid;

[0032] 3) with step 3 in embodiment 1);

[0033] 4) After adding 100 ml of acetone to the colloidal solution obtained in step 3) for demulsification, let stand overnight, centrifuge (4000 r / min, 5 min), and then wash three times with acetone, and freeze-dry the washed product, Carboxy-polymerized copper phthalocyanine nanoparticles were obtained.

[0034] The particle size distribution of the carboxyl polymerized copper phthalocyanine nanoparticles measured by transmission electron microscope is: 9-28 nm, and the average particle size is: 17.2 nm.

Embodiment 3

[0036] 1) At room temperature, add 0.05g of carboxyl polymerized copper phthalocyanine (O-CuPc) into 20ml of 0.02mol / L sodium hydroxide solution, and stir magnetically until the O-CuPc is completely dissolved;

[0037] 2) under mechanical stirring, 0.1g of cetyltrimethylammonium bromide (CTAB) was dissolved in 100ml of 0.1mol / L dilute hydrochloric acid to obtain a completely transparent dispersion;

[0038] 3) with step 3 in embodiment 1);

[0039] 4) After adding 50 ml of ethanol to the colloidal solution obtained in step 3) for demulsification, let stand overnight, centrifuge (4000 r / min, 5 min), and then wash with acetone 3 times, and freeze-dry the washed product, Carboxy-polymerized copper phthalocyanine nanoparticles were obtained.

[0040] The particle size distribution of the carboxyl polymerized copper phthalocyanine nanoparticles measured by transmission electron microscope is: 15.5-30 nm, and the average particle size is: 25 nm.

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Abstract

The invention relates to a method for preparing carboxyl polymeric copper phthalocyanine nanoparticles, and belongs to the field of high polymer nanomaterials. At present, the method for preparing the carboxyl polymeric copper phthalocyanine nanoparticles is not provided. The method comprises the following steps of: adding dilute alkali solution of carboxyl polymeric copper phthalocyanine into acid solution of a surfactant to obtain colloidal solution; and demulsifying, standing, precipitating, washing, centrifuging and freeze-drying the colloidal solution to obtain the carboxyl polymeric copper phthalocyanine nanoparticles. The method has the advantages of simple and convenient operation and safety.

Description

technical field [0001] The invention belongs to the field of nanometer polymer materials, and particularly relates to a preparation method of carboxyl-polymerized copper phthalocyanine nanoparticles. Background technique [0002] Carboxy-polymerized copper phthalocyanine (O-CuPc) dispersed in electrostrictive polymer matrix (P(VDF-TrFE)) can not only maintain good flexibility of the polymer matrix, but also make the matrix obtain a higher dielectric constant At the same time, it has a higher elastic energy density in a lower driving electric field (13MV / m) (Zhang Q M, Li H F, Poh M, et al. An all-organic composite actuator material with a high dielectric constant[J]. Nature (London), 2002, 419:284-287). [0003] However, the current O-CuPc powder filled in the electroactive polymer is close to the micrometer scale, which not only limits the thickness of the composite film, but also has poor compatibility with the matrix and cannot be well dispersed in the polymer matrix. I...

Claims

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Application Information

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IPC IPC(8): C08J3/14C08K9/00
Inventor 党智敏高燕
Owner BEIJING UNIV OF CHEM TECH
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