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Super-long silver nanowire and preparation method thereof

A silver nanowire, ultra-long technology, applied in the field of its preparation, ultra-long silver nanowire, can solve the problem of complex preparation methods of silver nanowire

Active Publication Date: 2015-05-13
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] The present invention aims to overcome the defects of complex preparation methods of existing silver nanowires, and the present invention provides an ultra-long silver nanowire and its preparation method

Method used

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  • Super-long silver nanowire and preparation method thereof
  • Super-long silver nanowire and preparation method thereof
  • Super-long silver nanowire and preparation method thereof

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[0038] The invention relates to a silver nanowire and a preparation method thereof, in particular to an ultra-long silver nanowire and a preparation method thereof, as well as a conductive ink / ink, a transparent conductive film, a printed circuit and related electronic products prepared therefrom.

[0039] The invention provides a method for preparing ultra-long silver nanowires, the method comprising:

[0040] a) dissolving the cationic surfactant in the organic reducing agent to form an organic reducing system;

[0041] b) adding silver salt as a silver source to the organic reducing system obtained in step a), and reacting at a first specified temperature.

[0042] In the present invention, in the process of synthesizing ultra-long silver nanowires, a typical reaction system composed of an organic reducing agent and an organic surfactant is used. After the system is melted to form a transparent solution, an organic silver salt is added to the system as a silver source. . ...

Embodiment 1

[0082] 0.5 g of cetyltrimethylammonium bromide and 8.0 g of hexadecylamine were completely dissolved at 180° C., then 50 mg of silver acetylacetonate was added as a silver source, and reacted at 140° C. for 10 hours. The resulting sample was washed several times with toluene after cooling to room temperature. The obtained silver-white solid was vacuum-dried at 80°C for 2 hours;

[0083] figure 1 It can be seen that the diameter of the obtained silver nanowire is about 50-100 nanometers, and its length exceeds 70 microns on average;

[0084] figure 2 For the XRD spectrum of the sample prepared in this embodiment, it can be seen that the product is a pure silver nanowire;

[0085] Depend on image 3 It can be seen that the nanowires have good crystallinity and smooth surface.

Embodiment 2

[0087] 0.5 g of hexadecyltrimethylammonium bromide and 8.0 g of hexadecylamine were completely dissolved at 180° C., then 50 mg of silver acetylacetonate was added as a copper source, and reacted at 150° C. for 10 hours. The resulting sample was washed several times with toluene after cooling to room temperature. The obtained silver-white solid was vacuum-dried at 80° C. for 2 hours. The obtained silver nanowires have a diameter of about 50-100 nanometers and an average length of more than 70 micrometers.

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Abstract

The invention relates to a super-long silver nanowire and a preparation method thereof. The preparation method comprises the following steps: 1) dissolving a cationic surfactant in an organic reducing agent so as to form an organic reduction system, wherein the cationic surfactant and silver salt which can be dissolved in an organic reduction system perform complexation, and the organic reducing agent comprises long-chain alkylamine; 2) adding the silver salt which can be dissolved in the organic reduction system in the prepared organic reduction system, performing a reaction under 120-180 DEG C, filtering reacted substances, and washing the filtered substances.

Description

technical field [0001] The invention relates to a silver nanowire and a preparation method thereof, in particular to an ultra-long silver nanowire, a preparation method thereof and an application thereof. Background technique [0002] In recent years, one-dimensional materials have attracted extensive attention due to their unique optical, electrical, and magnetic properties, especially their great application prospects in the fields of transparent displays, photoelectric conversion, and sensors. Due to the poor flexibility and high cost of the ITO materials currently used in the field of transparent conduction, the metal nanomaterial transparent conduction film will become an important substitute material for ITO. Silver nanowires have excellent conductivity, and the conductivity of its transparent conductive film can be compared with the best performance of ITO. At the same time, silver nanowires also have unique mechanical and optical properties. Therefore, silver nanowi...

Claims

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Application Information

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IPC IPC(8): B22F9/24
Inventor 王冉冉孙静王晓高濂王焱
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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