Preparation method of polymer-coated binary bifunctional nanocluster core-shell microspheres

A technology of nanoclusters and polymers, applied in the field of composite nanoclusters, which can solve the problems of not realizing multifunctional integration and single function of nanoclusters

Inactive Publication Date: 2011-12-28
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although nanoclusters have many advantages, the currently prepared nanoclusters are limited to a single function, far from achieving multifunctional integration.
In addition, the structural stability of nanoclusters has not yet been resolved, and the prepared nanoclusters can only last for about two weeks, which is still far from practical application.

Method used

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  • Preparation method of polymer-coated binary bifunctional nanocluster core-shell microspheres
  • Preparation method of polymer-coated binary bifunctional nanocluster core-shell microspheres
  • Preparation method of polymer-coated binary bifunctional nanocluster core-shell microspheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 1. Synthesis of toluene-phase Au nanoparticles

[0044] First, Au nanoparticles stabilized by octadecyl p-vinylbenzyl-dimethylammonium chloride (OVDAC) were prepared by a water / chloroform two-phase method: 5ml of HAuCl with a concentration of 30mmol / L was mixed under stirring conditions. 4 Add the aqueous solution of 15ml to the chloroform solution containing 105mg OVDAC, after stirring vigorously for 30min, drop into 4.35ml containing 63.5mg NaBH 4 The aqueous solution was stirred for 30 min, and after the reaction was finished, the chloroform phase solution was separated with a separatory funnel. The chloroform in the system was removed by volatilization and 15ml of toluene was added to obtain Au nanoparticles with a toluene phase concentration of 10 mg / ml stabilized by OVDAC, as shown in Figure 1(a), indicating that we successfully synthesized the toluene phase Oil-soluble Au nanoparticles with a particle size of 10.4nm.

[0045] 2. Synthesis of toluene-phase Fe 3...

Embodiment 2

[0054] 1. Synthesis of Ag nanoparticles in toluene phase

[0055] First, Ag nanoparticles stabilized by OVDAC were prepared by a water / chloroform two-phase method: 5ml of AgNO with a concentration of 30mmol / L was mixed under stirring conditions. 3 The aqueous solution was added to 15ml of chloroform solution containing 105mg OVDAC, after vigorous stirring for 30min, 4ml containing 21mg NaBH 4 The aqueous solution was stirred for 30 min, and after the reaction was finished, the chloroform phase solution was separated with a separatory funnel. Chloroform in the system was removed by volatilization and 15 ml of toluene was added to obtain Ag nanoparticles with toluene phase concentration of 10 mg / ml stabilized by OVDAC. As shown in Figure 1(c), it shows that we have successfully synthesized oil-soluble Ag nanoparticles in toluene phase with a particle size of 7.8nm.

[0056] 2. Toluene phase Fe 3 o 4 The synthetic method of nanoparticles is as described in Example 1

[0057]...

Embodiment 3

[0064] 1. Synthesis of Pt nanoparticles in toluene phase

[0065] Firstly, OVDAC-stabilized Pt nanoparticles were prepared by a water / chloroform two-phase method: 3ml of 35mmol / L H 2 PtCl 6 The aqueous solution was added to 9ml of chloroform solution containing 69mg OVDAC, after vigorous stirring for 30min, 2.5ml of chloroform solution containing 51mgNaBH was added dropwise. 4 The aqueous solution was stirred for 30 min, and after the reaction was finished, the chloroform phase solution was separated with a separatory funnel. The chloroform in the system was removed by volatilization, and 9 ml of toluene was added to obtain Pt nanoparticles with a toluene phase concentration of 10 mg / ml stabilized by OVDAC. As shown in Fig. 1(d), we successfully synthesized oil-soluble Pt nanoparticles in toluene phase with a particle size of 2.1 nm.

[0066] 2. Toluene phase Fe 3 o 4 The synthetic method of nanoparticles is as described in Example 1

[0067] 3. Preparation of Fe 3 o 4...

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Abstract

The invention belongs to the technical field of functional nanoparticle assembly, and specifically relates to a method of preparing binary nanoclusters with nanoparticle as a structural unit and microemulsion droplets as a template, and preparing a polymer with binary nanoclusters as a core through surface-initiated polymerization. A new method for shell-composite nanoclusters. It includes three steps: synthesis of nanoparticles, preparation of nanoclusters, and surface-initiated polymerization. Oil-soluble nanoparticles can be synthesized by two-phase method, phase transfer method, and high-temperature pyrolysis method, and the size of nanoclusters can be regulated by changing the amount of surfactant and the concentration of nanoparticles. The invention is a new method for preparing bifunctional nano-clusters and compounding them with polymers, which realizes the integration and optimization of various nano-particle functions. After compounding with polymers, it can not only improve the stability of nano-clusters, but also introduce polymerization The special properties of materials can be obtained to obtain nano-micro-scale multifunctional composite materials, which have broad application prospects in the research fields of biology, catalysis, sensing, and optoelectronics.

Description

technical field [0001] The invention belongs to the technical field of functional nanoparticle assembly, and specifically relates to a method for preparing binary nanoclusters by using nanoparticles as structural units and microemulsion droplets as templates, and preparing binary nanoclusters as cores through surface-initiated polymerization. A new method for shell-composite nanoclusters. Background technique [0002] After more than 20 years of development, nanoscience has become an interdisciplinary subject involving many fields such as physics, chemistry, materials, and life sciences. As a representative of nanomaterials, inorganic nanoparticles have a unique quantum size effect, and their properties are strongly dependent on size, showing attractive application prospects in the fields of optics, electricity, magnetism, catalysis, and life sciences. In-depth studies have shown that the use of single-function nanoparticles can no longer meet the needs of related research ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/16B82Y40/00
Inventor 张皓张雪韩吉姝梁森杨柏
Owner JILIN UNIV
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