A kind of preparation method of near-infrared stannous sulfide nanoparticles

A technology of stannous sulfide and nanoparticles, which is applied in the field of material chemistry, can solve problems such as limited applications, and achieve the effects of simple preparation steps, small quantities, and great application prospects

Active Publication Date: 2020-08-07
苏州影睿光学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These greatly limit its application in the fields of biomarkers, imaging, clinical diagnosis, etc.

Method used

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  • A kind of preparation method of near-infrared stannous sulfide nanoparticles
  • A kind of preparation method of near-infrared stannous sulfide nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 0.05mmol of phenanthroline tin and 0.035mmol of dimethyl disulfide into 2g of octyl mercaptan, 5g of octadecylamine and 3g of oleic acid mixture, under the protection of an argon atmosphere, stir evenly, then stir Raise the temperature to 110°C and react for 155min. Cool naturally, add 60mL of acetone after cooling down to room temperature, mix well and centrifuge, repeat twice, and then disperse in toluene to obtain SnS nanoparticles with monodisperse fluorescence peak at 1035 nm. The morphology of the particles is as follows: figure 1 As shown, the fluorescence spectrum as figure 2 shown.

Embodiment 2

[0022] Take by weighing 0.35mmol of phenanthroline tin and 0.35mmol of dimethyl disulfide and join in the oleic acid mixed solution of 1g octyl mercaptan, 7.5g octadecylamine and 3g, under the protection of argon atmosphere, stir evenly, then Stir and heat up to 1450°C, and react for 120 minutes. Cool naturally, add 60 mL of acetone after cooling down to room temperature, mix well and centrifuge, repeat twice, and then disperse in toluene to obtain monodisperse SnS nanoparticles.

Embodiment 3

[0024] Weigh 0.85mmol of phenanthroline tin and 2.32mmol of dimethyl disulfide and join in 5g of octyl mercaptan, 5g of octadecylamine and 5g of oleic acid mixture, under the protection of argon atmosphere, stir evenly, then stir Raise the temperature to 175°C and react for 20 minutes. Cool naturally, add 60 mL of acetone after cooling down to room temperature, mix well and centrifuge, repeat twice, and then disperse in toluene to obtain monodisperse SnS nanoparticles.

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Abstract

The invention discloses a preparation method of near-infrared stannous sulfide nano-particles. According to the method, phenanthroline tin is adopted as a tin resource, dimethyl disulfide is adopted as a sulfur resource, and in a surface modification agent, the stannous sulfide nano-particles with near-infrared fluorescence are prepared in one step. According to the preparation method of the near-infrared stannous sulfide nano-particles, the operation step is simple, the adopted agents are few, the cost is low, and implementation is easy; the whole preparation process meets the requirements ofgreen chemistry and is safe and environmentally friendly; the prepared stannous sulfide nano-particles have the advantages of being good in monodispersity, high in near-infrared fluorescence intensity, good in stability and the like.

Description

technical field [0001] The invention particularly relates to a preparation method of near-infrared stannous sulfide nanoparticles, which belongs to the technical field of material chemistry. Background technique [0002] Tin sulfide (SnS) has both direct and indirect band gaps, which are 1.3 eV and 1.1 eV respectively. It is an important narrow band gap IV-VI semiconductor material, and the band gap directly transitions to the luminous wavelength at room temperature. In the range of the second near-infrared zone (1000nm). Compared with visible light, near-infrared fluorescence has many unique advantages, such as large tissue penetration depth, low background fluorescence, and small scattering, so it has become a research hotspot at home and abroad. At present, the common nano-materials in the second near-infrared region contain toxic elements such as heavy metals such as Pb and Hg. These greatly limit its application in biomarkers, imaging, clinical diagnosis and other fie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/00B82Y40/00C09K11/66
CPCB82Y40/00C01G19/00C01P2002/82C01P2004/04C01P2004/32C01P2006/60C09K11/661
Inventor 孙国凤刘莉丽
Owner 苏州影睿光学科技有限公司
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