Organic/metal nanowire heterojunction, as well as preparation method and application thereof

A metal nanowire and metal nanotechnology, applied in the coating and other directions, can solve problems such as being unfavorable for mass preparation of nanocomposite materials, poor mechanical stability of the overall structure, unfavorable for optical signal coupling and conduction, etc. Structurally stable and environmentally friendly

Active Publication Date: 2014-12-31
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of this nanocomposite material by photolithography is costly and complicated, and it is easy to leave a large amount of photoresist on the surface of the metal nanowire, resulting in additional conduction loss
The preparation process of the micro-manipulation method is time-consuming and laborious, which is not conducive to the large-scale preparation of nanocomposites, and in this composite structure, the dielectric waveguide and the metal nanowires are simply in contact with each other, and the mechanical stability of the overall structure is not good, which is not conducive to Stable coupling and transmission of optical signals between waveguides

Method used

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  • Organic/metal nanowire heterojunction, as well as preparation method and application thereof
  • Organic/metal nanowire heterojunction, as well as preparation method and application thereof
  • Organic/metal nanowire heterojunction, as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0053] Example 1. Preparation of organic / metal nanowire heterojunction

[0054] Prepare 1 milliliter of 1 mmol per liter of triphenylpyridine iridium (Ir(ppy) 3 ) in dichloromethane solution; take 10 microliters of ethanol solution of silver nanowires with a mass percentage concentration of 0.1%, a length of 10-20 microns, and a diameter of about 200 nanometers, and add them to 2 milliliters of ethanol, and ultrasonicate at room temperature for 10 seconds; take the above prepared Ir(ppy) 3 100 microliters of the solution was added to the ethanol solution of silver nanowires to obtain a mixed system. After standing at room temperature for 2 hours, dendritic Ir(ppy) was obtained in solution 3 / Ag nanowire heterojunction. Take 30 microliters of the solution, drop it on the quartz substrate, dry at room temperature for 30 minutes, and obtain dendritic Ir(ppy) on the quartz substrate 3 / Ag nanowire heterojunction.

[0055] figure 1 It is a scanning electron microscope photo o...

Embodiment 2

[0056] Example 2, Preparation of Organic / Metal Nanowire Heterojunction

[0057] Prepare 1 milliliter of 1 mmol per liter of triphenylpyridine iridium (Ir(ppy) 3 ) in dichloromethane solution; take 30 microliters of methanol solution of silver nanowires with a mass percentage concentration of 0.1%, a length of 10-20 microns, and a diameter of about 200 nanometers, add them to 2 milliliters of methanol, and ultrasonicate at room temperature for 10 seconds; take the above prepared Ir(ppy) 3 100 microliters of the solution was added to the methanol solution of silver nanowires to obtain a mixed system. After standing at room temperature for 2 hours, dendritic Ir(ppy) was obtained in solution 3 / Ag nanowire heterojunction. Take 30 microliters of the solution, drop it on the quartz substrate, dry at room temperature for 30 minutes, and obtain dendritic Ir(ppy) on the quartz substrate 3 / Ag nanowire heterojunction.

[0058] figure 2 It is a scanning electron microscope photo o...

Embodiment 3

[0059] Example 3, Preparation of Organic / Metal Nanowire Heterojunction

[0060] Prepare 1 milliliter of 1 mmol per liter of triphenylpyridine iridium (Ir(ppy) 3 ) in chloroform solution; take 10 microliters of ethanol solution of silver nanowires with a mass percentage concentration of 0.1%, a length of 10-20 microns, and a diameter of about 200 nanometers, and add them to 2 milliliters of ethanol, and ultrasonicate at room temperature for 10 seconds; take the above prepared Ir(ppy) 3 100 microliters of the solution was added to the ethanol solution of silver nanowires to obtain a mixed system. Standing at 50°C for 2 hours, dendritic Ir(ppy) was obtained in solution 3 / Ag nanowire heterojunction. Take 30 microliters of the solution, drop it on the quartz substrate, dry at room temperature for 30 minutes, and obtain dendritic Ir(ppy) on the quartz substrate 3 / Ag nanowire heterojunction.

[0061] image 3 It is a scanning electron microscope photo of the above-mentioned n...

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Abstract

The invention discloses an organic / metal nanowire heterojunction, as well as a preparation method and application thereof. Due to the self assembly process of organic molecules in liquid phase, metal nanowires dispersed in the liquid phase are embedded therein, so the organic / metal nanowire heterojunctions of different structures are obtained. The preparation method provided by the invention is simple in process, convenient to operate, low in cost and wide in application, can be used for massive preparation and is environment-friendly. The organic / metal nanowire heterojunction obtained by the method has a smooth surface, a medium waveguide and a metal silver nanowire can be very tightly combined together, very high coupling efficiency of photons and surface plasmon polaritons is achieved, the problems that the surface of the composite material, prepared by the previous method, is unsmooth, the contact area between metal and a medium is small, the integral mechanical structure is unstable and the like are solved, and the method can be used for preparing nanophotonics elements such as a photonics multiplexer or a nano optical sensor.

Description

technical field [0001] The invention relates to a preparation method and application of an organic / metal nanowire heterojunction. Background technique [0002] Photonic devices have the advantages of high speed, high bandwidth and low energy consumption that cannot be compared with electronic devices, and play a very important role in optical information processing and photonic computing. Traditional dielectric materials such as polymers, inorganic semiconductors, and organic materials are often used to prepare photonic devices, but the transmission of optical signals in these devices is limited by the diffraction limit, which is difficult to meet the needs of applications in integrated optical circuits. Therefore, it is of great significance to reduce the size of photonic devices and realize the manipulation of photons at the nanometer scale. Metal nanomaterials, especially metal nanowires, the conduction band electrons on the surface can couple with the electromagnetic fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/02
Inventor 赵永生李勇军闫永丽姚建年
Owner INST OF CHEM CHINESE ACAD OF SCI
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