Method for assembling block copolymer for preparing gold nano array electrode in water phase

A technology of block copolymers and array electrodes, applied in the direction of electrochemical variables of materials, can solve the problems of limiting the promotion and application of electrodes, environmental pollution, etc., and achieve the effects of improving production efficiency, reducing costs, and expanding the scope of application

Inactive Publication Date: 2007-10-24
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the prepared electrode has good catalytic activity, the assembly of the block copolymer is carried out in toluene, and the intervention of organic solvents not only pollutes the environment, but also limits the promotion and application of the electrode in other fields.

Method used

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  • Method for assembling block copolymer for preparing gold nano array electrode in water phase
  • Method for assembling block copolymer for preparing gold nano array electrode in water phase
  • Method for assembling block copolymer for preparing gold nano array electrode in water phase

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Experimental program
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Effect test

Embodiment 1

[0033] The preparation of embodiment 1 gold nanometer array electrode

[0034] 1. Preparation of cationic micelles

[0035] Dissolve the polytetravinylpyridine-polystyrene block copolymer in a HCl solution with a concentration of 0.1mol / L so that the concentration of the polytetravinylpyridine-polystyrene block copolymer is 3 mg / mL. Stir for 2 hours to form cationic micelles with polytetravinylpyridine as the shell and polystyrene as the core.

[0036] 2. Preparation of gold colloids

[0037] HAuCl with a concentration of 0.1mmol / L 4 The solution was heated while stirring, and after the solution boiled, the sodium citrate solution was added to the above-mentioned boiling HAuCl 4 In the solution, make the concentration of sodium citrate in the mixed solution be 30mmol / L, reflux 15 minutes. A gold colloid with a particle size of about 20 nm was obtained. Store the colloid in a refrigerator at 4°C when not in use.

[0038] 3. Electrostatic assembly

[0039] (1) Cut the ITO c...

Embodiment 2

[0050] Embodiment 2 Preparation of gold nano-array electrodes

[0051] 1. Preparation of cationic micelles

[0052] Dissolve the polytetravinylpyridine-polystyrene block copolymer in a HCl solution with a concentration of 0.1mol / L so that the concentration of the polytetravinylpyridine-polystyrene block copolymer is 3 mg / mL. Stir for 2 hours to form cationic micelles with polytetravinylpyridine as the shell and polystyrene as the core.

[0053] 2. Preparation of gold colloids

[0054] HAuCl with a concentration of 0.1mmol / L 4 The solution was heated while stirring, and after the solution boiled, the sodium citrate solution was added to the above-mentioned boiling HAuCl 4 In the solution, make the concentration of sodium citrate in the mixed solution be 30mmol / L, reflux 15 minutes. A gold colloid with a particle size of about 20 nm was obtained. Store the colloid in a refrigerator at 4°C when not in use.

[0055] 3. Electrostatic assembly

[0056] (1) Cut the ITO conduct...

Embodiment 3

[0067] The preparation of embodiment 3 gold nano-array electrodes

[0068] 1. Preparation of cationic micelles

[0069] Dissolve the polytetravinylpyridine-polystyrene block copolymer in a HCl solution with a concentration of 0.1mol / L so that the concentration of the polytetravinylpyridine-polystyrene block copolymer is 3 mg / mL. Stir for 2 hours to form cationic micelles with polytetravinylpyridine as the shell and polystyrene as the core.

[0070] 2. Preparation of gold colloids

[0071] HAuCl with a concentration of 0.1mmol / L 4 The solution was heated while stirring, and after the solution boiled, the sodium citrate solution was added to the above-mentioned boiling HAuCl 4 In the solution, make the concentration of sodium citrate in the mixed solution be 30mmol / L, reflux 15 minutes. A gold colloid with a particle size of about 20 nm was obtained. Store the colloid in a refrigerator at 4°C when not in use.

[0072] 3. Electrostatic assembly

[0073] (1) Cut the ITO con...

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Abstract

The invention relates to a method for assembling embedded polymer to prepare metal nanometer array electrode in water phase, belonging to nanometer electrode technical field. The invention assembles polythene pyridine-polystyrene embedded polymer in water phase, uses the static function between cation micelle and the metal nanometer particle with negative charge to prepare metal nanometer array electrode. The inventive method is simple which lead in organic solvent, repeatedly applied electrode surface, and reduced cost. The metal nanometer array electrode has better dispersion, improved transmission speed of electrode surface, and better catalysis ability on catechin. The surface of the prepared metal nanometer particle has same charge, applied in the preparation of other metal nanometer array electrode, and self-assemble multilayer membrane, to build complex multi-element nanometer structure, with significant benefit in the research and application of nanometer electrochemistry and biological sensor.

Description

technical field [0001] The invention belongs to the technical field of nanometer electrodes, and in particular relates to a method for preparing gold nanometer array electrodes by assembling block copolymers in water phase. Background technique [0002] Metal nanoelectrodes have incomparable advantages over ordinary electrodes due to their small size, such as fast mass transfer rate, small charging current, and high signal-to-noise ratio. But also because of this, there are still great difficulties in its preparation, characterization and even application, especially for a single nanoelectrode, its preparation success rate is low, and it is easily disturbed by external conditions. However, nano-array electrodes are relatively easy to fabricate, and can amplify electrochemical signals while retaining the unique advantages of nano-electrodes, so they have attracted widespread attention. Recently, the Oyama research group used the method of seed growth to prepare gold nano-arr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30
Inventor 由天艳刘阳
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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