Orderly heterogeneous nano-wire flexible conductive film and preparation method thereof

A technology of nanowires and thin films, applied in the field of nanometers, can solve problems such as the inability to realize conductance regulation, and achieve the effect of simple steps and good conductivity

Inactive Publication Date: 2013-04-03
UNIV OF SCI & TECH OF CHINA
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  • Abstract
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  • Application Information

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Problems solved by technology

But the disadvantage is that the nanowires are arranged in disorder, and the conductance regulation is almost impossible to achieve.

Method used

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  • Orderly heterogeneous nano-wire flexible conductive film and preparation method thereof
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  • Orderly heterogeneous nano-wire flexible conductive film and preparation method thereof

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[0029] The invention provides a macro-preparation method of an ordered nanowire-nanoparticle heterogeneous assembly. The method includes the following steps: firstly prepare a tellurium nanowire by a hydrothermal method, and then obtain a tellurium nanowire by an LB assembly method. wire assembly, and then use the tellurium nanowire assembly as a template to generate a tellurium-gold assembly by reacting with a chloroauric acid solution.

[0030] After the nanomaterial assembly is obtained, it also preferably includes: transferring the nanowire film assembly to various substrates by layer-by-layer assembly, or transferring the single-layer one-dimensional nanowire film from the water-air interface to a flat surface Flexible substrates, such as: PET substrates or ordinary commercial filter paper substrates, provide the premise and guarantee for the development of the properties of nanomaterials and the design and performance of nanowire-based devices to be practical.

[0031] I...

Embodiment 1

[0039] Example 1: Preparation of Tellurium Nanowire Assembly

[0040] 1. Synthesis of tellurium nanowires with a diameter of 7 nm

[0041] Add 1.000 grams of polyvinylpyrrolidone (PVP) (Shanghai Reagent Company, molecular weight ≈40,000), 0.0922 grams of sodium tellurite (Na 2 TeO 3 ), 33 milliliters of water, 1.67 milliliters of mass percent are hydrazine hydrate of 85% and 3.33 milliliters of mass percent are the ammoniacal liquor of 25~28%; Adopt magnetic stirring to reach homogeneous solution in 10 minutes; Put polytetrafluoroethylene reactor into steel cover, After reacting at 180° C. for 3 hours and cooling naturally, a mother liquor containing tellurium nanowires with a diameter of 7 nanometers and a length of hundreds of micrometers was obtained.

[0042] 2. Preparation of tellurium nanomaterial assemblies

[0043] Take 5 ml of the above-mentioned tellurium nanowire mother liquor, add 12 ml of acetone, perform centrifugation at 5000 rpm for 5 minutes, and remove the...

Embodiment 2

[0045] Example 2: Preparation of tellurium-gold heterogeneous nanowire film

[0046] The preparation of the tellurium nanomaterial assembly is the same as in Example 1.

[0047] The above pressed tellurium nanowire assembly was transferred to a glass substrate, and then the substrate was dried. 0.0202 g of chloroauric acid (HAuCl 4 4H 2 O) dissolved in 20 milliliters of deionized water and stirred evenly. Then put the above-mentioned glass substrate carrying the tellurium nanowire assembly into the above-mentioned aqueous solution of auric acid chloride, take it out after 600 seconds and dry it to obtain the tellurium-gold heterogeneous nanowire assembly. In this process, the thickness of the tellurium nanowire film (that is, the number of layers) and the reaction time with the chloroauric acid aqueous solution can be adjusted, and will affect the resistance of the final film. Taking the ten-layer nanowire film as an example, the thickness of the nanowire film made accordi...

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Abstract

The invention discloses a preparation method for an orderly heterogeneous nano-wire assembling body. The preparation method comprises the following steps of: first, tellurium nano-wires are prepared by a hydrothermal method; then, obtaining a tellurium nano-wire assembling body by an LB assembling method; and finally, generating a tellurium-aurum heterogeneous nano-wire assembling body by taking the tellurium nano-wire assembling body as a template and reacting with a chloroauric acid solution. By the orderly heterogeneous nano-wire flexible conductive film, the flexible conductive film can be obtained by taking polyethylene terephthalate (PET) as a substrate. Compared with the prior art, the method provided by the invention is simple in steps, has the characteristics of economy and rapidness, and is applicable to the macroscopic preparation of a plurality of nano-wire material assembling bodies.

Description

technical field [0001] The invention relates to the field of nanotechnology, and more specifically relates to an ordered heterogeneous nanowire flexible conductive film and a macro-preparation method thereof. Background technique [0002] Nanomaterials refer to materials that have at least one dimension in the three-dimensional space in the nanoscale range (1-100nm) or are composed of them as basic units. On the one hand, nanomaterials have a high surface-to-volume ratio, which leads to high chemical activity; on the other hand, taking nanowires as an example, they have a high aspect ratio, and particle transport does not exist in one dimension. Constraints are conducive to technical applications. In addition, the British "Nature Materials" (Nature Materials, No. 6, 2007, page 841) pointed out that the development of physical and chemical properties of materials not only depends on their own shape and size, but also depends on the synergy of assemblies. The US "Nano Letter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B82B3/00B82Y30/00B82Y40/00
Inventor 俞书宏刘建伟黄巍然
Owner UNIV OF SCI & TECH OF CHINA
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