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Method for preparing fusiform silicon-based nanometer material

A silicon nanometer and fusiform technology, applied in the field of nanomaterials, to achieve the effects of good water dispersibility, good fluorescence stability and pH stability

Active Publication Date: 2016-01-27
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the design of fusiform silicon nanostructures with both fluorescent and magnetic properties in the prior art

Method used

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  • Method for preparing fusiform silicon-based nanometer material
  • Method for preparing fusiform silicon-based nanometer material
  • Method for preparing fusiform silicon-based nanometer material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Add 3ml of aminopropyltrimethoxysilane to 25ml of nitrogen-protected solution in which 0.5g of trisodium citrate dihydrate is dissolved, then add 1ml of 0.05M ferric chloride solution, and fully stir overnight.

[0030] (2) The reaction precursor solution is placed in a microwave reactor, and the control conditions are as follows:

[0031] Microwave power: 100W; Reaction temperature: 150°C; Reaction time: 15min.

[0032] (3) The material obtained by the reaction is dialyzed to neutrality in deionized water to obtain the final product.

[0033] Through optical and magnetic tests, the prepared shuttle-shaped silicon nanomaterials were applied to nuclear magnetic resonance weighted imaging.

Embodiment 2

[0035] (1) Add 4ml of aminopropyltrimethoxysilane to 50ml of 0.5g of trisodium citrate dihydrate solution dissolved in nitrogen protection, then add 1ml of 0.1M ferric sulfate solution, and fully stir overnight.

[0036] (2) The reaction precursor solution is placed in a microwave reactor, and the control conditions are as follows:

[0037] Microwave power: 120W; Reaction temperature: 160°C; Reaction time: 30min.

[0038] (3) The material obtained by the reaction is dialyzed to neutrality in deionized water to obtain the final product.

[0039] Through optical and magnetic tests, the prepared shuttle-shaped silicon nanomaterials were applied to nuclear magnetic resonance weighted imaging.

Embodiment 3

[0041](1) Add 3ml of aminopropyltrimethoxysilane to 25ml of citric acid solution dissolved in 0.6g of citric acid under nitrogen protection, then add 1ml of 0.1M ferric nitrate solution, and fully stir overnight.

[0042] (2) The reaction precursor solution is placed in a microwave reactor, and the control conditions are as follows:

[0043] Microwave power: 100W; Reaction temperature: 140°C; Reaction time: 60min.

[0044] (3) The material obtained by the reaction is dialyzed to neutrality in deionized water to obtain the final product.

[0045] Through optical and magnetic tests, the prepared shuttle-shaped silicon nanomaterials were applied to nuclear magnetic resonance weighted imaging.

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Abstract

The invention discloses a method for preparing a fusiform silicon-based nanometer material. Under the condition of microwave radiation, the one-dimensional fusiform silicon-based nanometer material is prepared through reduction of organic silicon and iron ion induced synthesis. The prepared fusiform silicon-based nanometer material has remarkable excitation wavelength dependence, so that different colors of lights can be displayed under the illumination of different excitation wavelengths; the prepared fusiform silicon-based nanometer material is highly water-dispersible, achieves higher fluorescence stability and pH stability, is paramagnetic at the room temperature and ferromagnetic at a low temperature, and can be used for T1 and T2 nuclear magnetic resonance weighted imaging; moreover, the fusiform silicon-based nanometer material can be used as a fluorescence indicator for biological detection and analysis, and is expected to be further used in the fields of photoelectronic devices and energy.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and relates to a method for preparing silicon nanomaterials, in particular to a method for preparing shuttle-shaped silicon nanomaterials. Background technique [0002] Silicon, as the second highest element after oxygen in the earth's crust, has an irreplaceable position in the semiconductor electronics industry. In the field of nanotechnology, silicon nanomaterials have excellent optical / electrical / mechanical properties, and have shown great application prospects in the fields of electronics, biology, and energy, and have also greatly promoted the development of nanotechnology [see: Ding , Z.F.; Quinn, B.M.; Haram, S.K.; Pell, L.E.; Korgel, B.A.; , 299, 1874-1877. Patolsky, F.; Timko, B.P.; Yu, G.H.; Fang, Y.; Greytak, A.B.; R.; Stevens, M.M. Science 2014, 346, 6205.]. Therefore, in order to meet the increasing application requirements, it is very important to design silicon nano...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/021
Inventor 何耀宋斌钟旖菱
Owner SUZHOU UNIV