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A kind of graphene oxide and gold nanorod composite ink and preparation method thereof

A technology of gold nanorods and graphene, which is applied to the composite ink of graphene oxide and gold nanorods and its preparation field, can solve the problems of easy agglomeration and easy oxidation of silver, and achieve low post-processing temperature and simple preparation process , the effect of high conductivity

Active Publication Date: 2017-08-29
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Some researchers combined graphene oxide and silver nanoparticles for inkjet printing, but silver is easily oxidized, so the composite ink of graphene oxide and silver has limitations, while gold nanomaterials can be stored stably and are not easily oxidized
Compared with gold nanoparticles, gold nanorods have a preferred orientation, which makes them show specific excellence in performance. However, the surface of gold nanorods synthesized in the literature is negatively charged (Yu, C.; Varghese, L. ; Irudayaraj, J., Surface modification of cetyltrimethylammonium bromide-capped gold nanorods to make molecularprobes.Langmuir 2007,23 (17), 9114-9119), this kind of gold nanorods mixed with positively charged graphene oxide on the surface is easy to agglomerate, And there is no report on the preparation of graphene oxide and gold nanorods with good dispersion and stable ink suitable for printing.

Method used

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  • A kind of graphene oxide and gold nanorod composite ink and preparation method thereof
  • A kind of graphene oxide and gold nanorod composite ink and preparation method thereof
  • A kind of graphene oxide and gold nanorod composite ink and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0016] 1) The graphene oxide prepared by the improved Hummer method is a golden yellow product; the product is processed at 200W for 5 hours with an ultrasonic crusher, and then passed through a 1.2 μM filter membrane to remove large-sized graphene oxide; the obtained solid is at room temperature Perform vacuum drying overnight to obtain graphene oxide with a size of 1000nm, which is dispersed in water to obtain a 0.05M graphene oxide dispersion;

[0017] 2) First, soak the glassware involved in the experiment in aqua regia, take it out after 3 hours, and wash it with plenty of water;

[0018] Synthetic seed solution: Add 5mL of 0.5mM chloroauric acid solution into 5mL of 0.2M cetyltrimethylammonium bromide solution, then add 0.5mL of 0.005M sodium borohydride solution, stir vigorously, the color of the solution From yellow to brown, stop stirring after 2 minutes and store at room temperature;

[0019] Dissolve 7.0g of cetyltrimethylammonium bromide and 9.0g of sodium oleate ...

Embodiment 2

[0022] 1) The graphene oxide prepared by the improved Hummer method is a golden yellow product; the product is processed at 200W for 5 hours with an ultrasonic crusher, and then passed through a 1.2 μM filter membrane to remove large-sized graphene oxide; the obtained solid is at room temperature Perform vacuum drying overnight to obtain graphene oxide with a size of 800nm, which is dispersed in water to obtain a 0.01M graphene oxide dispersion;

[0023] 2) First, soak the glassware involved in the experiment in aqua regia, take it out after 3 hours, and wash it with plenty of water;

[0024] Synthetic seed solution: Add 5mL of 0.5mM chloroauric acid solution into 5mL of 0.2M cetyltrimethylammonium bromide solution, then add 0.5mL of 0.005M sodium borohydride solution, stir vigorously, the color of the solution From yellow to brown, stop stirring after 2 minutes and store at room temperature;

[0025] Dissolve 7.0g of cetyltrimethylammonium bromide and 9.0g of sodium oleate i...

Embodiment 3

[0029] 1) The graphene oxide prepared by the improved Hummer method is a golden yellow product; the product is processed at 200W for 5 hours with an ultrasonic crusher, and then passed through a 1.2 μM filter membrane to remove large-sized graphene oxide; the obtained solid is at room temperature Perform overnight vacuum drying to obtain graphene oxide with a size of 1000nm, which is dispersed in water to obtain a 0.1M graphene oxide dispersion;

[0030] 2) First, soak the glassware involved in the experiment in aqua regia, take it out after 3 hours, and wash it with plenty of water;

[0031] Synthetic seed solution: Add 5mL of 0.5mM chloroauric acid solution into 5mL of 0.2M cetyltrimethylammonium bromide solution, then add 0.5mL of 0.005M sodium borohydride solution, stir vigorously, the color of the solution From yellow to brown, stop stirring after 2 minutes and store at room temperature;

[0032] Dissolve 7.0g of cetyltrimethylammonium bromide and 9.0g of sodium oleate i...

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Abstract

The invention discloses graphene oxide and gold nanorod composite ink and a preparing method of the graphene oxide and gold nanorod composite ink and belongs to the technical field of electronic printing materials. According to the method, a group, with negative charges, on the surface of a gold nanorod is replaced with a group with positive charges, and then the graphene oxide and gold nanorod composite ink which can evenly disperse in water is prepared by mixing graphene oxide and the gold nanorod with the positive charges on the surface ultrasonically. The graphene oxide and gold nanorod composite ink which can evenly disperse in water and prepared with the method is stable in performance and can be used for ink-jet printing. The graphene oxide and gold nanorod composite ink prepared with the method has the advantages that environmental friendliness is achieved, the preparing process is simple, and the aftertreatment temperature is low; in addition, patterns high in electrical conductivity and stability can be obtained, and the graphene oxide and gold nanorod composite ink can be widely applied to the technical field of electronic printing materials.

Description

technical field [0001] The invention belongs to the technical field of electronic printing materials, and in particular relates to a composite ink of graphene oxide and gold nanorods and a preparation method thereof. Background technique [0002] Inkjet printing technology, which can realize the direct writing of complex patterns, is one of the most promising methods to realize the patterning of functional materials. At present, inkjet printing technology has been widely used in the preparation of various functional devices. Graphene is a research hotspot in recent years, and inkjet printing of graphene oxide has been reported, but inks based on graphene oxide metal nanoparticles are less studied. The composite of metal nanoparticles and graphene oxide can improve the conductivity and other properties of graphene. Some researchers combined graphene oxide and silver nanoparticles for inkjet printing, but silver is easily oxidized, so the composite ink of graphene oxide and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/30C09D11/52
CPCC09D11/30C09D11/52
Inventor 冉为李立宏宋延林
Owner INST OF CHEM CHINESE ACAD OF SCI
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