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Large-ring-diameter silver nanoring and preparation method thereof

A technology of silver nanometer and ring diameter, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem of low repeatability, small diameter of silver nanoring ring, unfavorable transparent electrodes and optical nanotechnology. Antenna and other issues, to achieve short response time, reduce production costs, and inhibit lateral growth

Inactive Publication Date: 2020-08-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the silver nanorings prepared by the currently reported silver nanoring preparation methods are all small in diameter and low in repeatability, which is not conducive to future applications in transparent electrodes and optical nanoantennas, plasmonic devices, and optical manipulation. device

Method used

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  • Large-ring-diameter silver nanoring and preparation method thereof
  • Large-ring-diameter silver nanoring and preparation method thereof
  • Large-ring-diameter silver nanoring and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Weigh 0.92g of polyvinylpyrrolidone with a weight-average molecular weight of 1,300,000 and add it to 70mL of glycerol, adjust the stirring speed of the constant temperature heating magnetic stirrer to 300rpm, stir and heat in the reaction vessel at 160°C until completely dissolved. Weigh 0.26g of tetramethylammonium chloride and dissolve it in 5mL of glycerol, weigh 0.08g of NaBr and dissolve it in 5mL of glycerol, then add it into the above reaction vessel, and stir for 15min. Mix 19mL glycerol with 1mL deionized water, weigh 0.49g AgNO 3 dissolve in it. After complete dissolution, turn off the stirring function of the constant temperature heating magnetic stirrer, and mix the above AgNO 3 The solution was added dropwise into the reaction vessel by a constant flow pump, and after 11 minutes of completion of the dropwise addition, the reaction vessel was closed, and the reaction was continued at 160° C. for 55 minutes to complete the reaction.

[0033] Transfer t...

Embodiment 2

[0035] Weigh 0.92g of polyvinylpyrrolidone with a weight-average molecular weight of 1,300,000 and add it to 70mL of glycerol, adjust the stirring speed of the constant temperature heating magnetic stirrer to 300rpm, stir and heat in the reaction vessel at 160°C until completely dissolved; weigh tetramethyl chloride Dissolve 0.26g of ammonium in 5mL of glycerol, weigh 0.08g of NaBr and dissolve in 5mL of glycerol, then add to the above reaction vessel, stir for 15min; mix 19mL of glycerol with 1.5mL of ethylene glycol, weigh 0.49g of AgNO 3 dissolve in it. After complete dissolution, turn off the stirring function of the constant temperature heating magnetic stirrer, and mix the above AgNO 3 The solution was added dropwise into the reaction vessel by a constant flow pump, and after 11 minutes of completion of the dropwise addition, the reaction vessel was closed, and the reaction was continued at 160° C. for 55 minutes to complete the reaction. The centrifugal washing process...

Embodiment 3

[0037] Weigh 1.38g of polyvinylpyrrolidone with a weight average molecular weight of 360,000 and add it to 70mL of glycerol, adjust the stirring speed of the constant temperature heating magnetic stirrer to 300rpm, stir and heat in the reaction vessel at 170°C until completely dissolved; weigh tetramethyl chloride Dissolve 0.26g of ammonium in 5mL of glycerol, weigh 0.08g of NaBr and dissolve in 5mL of glycerol, then add to the above reaction vessel, stir for 15min; mix 19mL of glycerol with 0.5mL of deionized water, weigh 0.49g of AgNO 3 dissolve in it. After complete dissolution, turn off the stirring function of the constant temperature heating magnetic stirrer, and mix the above AgNO 3The solution was added dropwise into the reaction vessel with a constant flow pump, and after 11 minutes of completion of the dropwise addition, the reaction vessel was closed, and the reaction was continued at 170° C. for 45 minutes to complete the reaction. The centrifugal washing process ...

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Abstract

The invention belongs to the technical field of silver nanometer material preparation, and discloses a large-ring-diameter silver nanoring and a preparation method thereof. Polyvinylpyrrolidone is dissolved in glycerol, then tetramethylammonium chloride is added to be stirred and mixed evenly with a NaBr glycerol solution, and a nucleation control agent solution is obtained; AgNO3 is dissolved ina mixed solution of deionized water or ethanediol and glycerol, and an AgNO3 solution is obtained; and the AgNO3 solution is added into the nucleation control agent solution dropwise to react at the temperature ranging from 155 DEG C to 165 DEG C, products are dispersed into ethyl alcohol after being separated and washed, and large-ring-diameter silver nanoring dispersion liquid is obtained. The micro environmental deviation is controlled by controlling the viscosity of reaction liquid and the solvent mixing proportion, the ring diameter of the prepared silver nanoring reaches 25 micrometers to 41 micrometers, the process is simple, and the cost is low. The silver nanoring can be applied into transparency electrodes, optical nanometer antennas, plasma laser devices or optical control devices and other devices.

Description

technical field [0001] The invention belongs to the technical field of silver nanomaterial preparation, and in particular relates to a silver nanoring with a large ring diameter and a preparation method thereof. Background technique [0002] In recent years, the new display industry has developed rapidly, and the form of display devices is undergoing development from flat panel display to fixed curved surface display and flexible display. With the launch of foldable mobile phones such as Samsung Galaxy Z Flip and Huawei Mate Xs, the development of flexible display The concept began to enter the minds of the public, and triggered a new round of flexible display development and investment boom. Flexible active organic light-emitting diode display (AMOLED) is currently the most mature technology used in flexible displays, and is currently in the market growth stage. Among the components of the flexible display, the transparent conductive film (TCF) occupies an important positi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/00B82Y30/00B82Y40/00
CPCB22F9/24B82Y30/00B82Y40/00B22F1/0547
Inventor 宁洪龙李志航姚日晖陈俊龙符晓张观广张旭梁志豪梁宏富彭俊彪
Owner SOUTH CHINA UNIV OF TECH
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