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Method for adopting ITO nano-material as surface enhanced substrate of infrared spectrum combined frequency area

A technology of infrared spectroscopy, nanomaterials, applied in nanotechnology for sensing, nanotechnology for materials and surface science, analytical materials, etc.

Inactive Publication Date: 2017-08-29
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In response to the above problems, we used ITO semiconductor nanoparticles or thin film materials as the substrate for SENIR and SEIRAS detection for the first time

Method used

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  • Method for adopting ITO nano-material as surface enhanced substrate of infrared spectrum combined frequency area
  • Method for adopting ITO nano-material as surface enhanced substrate of infrared spectrum combined frequency area
  • Method for adopting ITO nano-material as surface enhanced substrate of infrared spectrum combined frequency area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Synthesis of plasmon resonance nanomaterial ITO in the combined frequency region of infrared spectroscopy, surface modification with acid red as probe molecule, and SENIR and SEIRAS detection by direct method and potassium bromide tablet method.

[0041] 1. Synthesis of plasmon resonance nanomaterial ITO in the combined frequency region of infrared spectrum:

[0042] (1) Weigh 0.249 g of indium acetylacetonate and 0.0261 g of tin chloride acetylacetonate with a balance.

[0043] (2) Put the above sample into a 50mL beaker, add 15mL of n-butanol to dissolve the sample, stir it evenly with a glass rod, and then ultrasonicate for 10 minutes.

[0044] (3) Use a graduated cylinder to measure 12 mL of the solution obtained in step (2) and put it into a reaction kettle, put the reaction kettle into a constant temperature oven and heat up to 200 ° C, continue heating for 48 hours, then place the reaction kettle at room temperature to cool, and the product Centrifugation gave a...

Embodiment 2

[0052] Synthesis of plasmon resonance nanomaterial ITO in the combined frequency region of infrared spectroscopy, surface modification with Sudan red as probe molecule, and direct method for SENIR and SEIRAS detection.

[0053] 1. Synthesis of plasmon resonance nanomaterial ITO in the combined frequency region of infrared spectrum:

[0054] (1) Weigh 0.249 g of indium acetylacetonate and 0.0261 g of tin chloride acetylacetonate with a balance.

[0055] (2) Put the above sample into a 50mL beaker, add 15mL of n-butanol to dissolve the sample, stir it evenly with a glass rod, and then ultrasonicate for 10 minutes.

[0056] (3) Use a graduated cylinder to measure 12 mL of the solution obtained in step (2) and put it into a reaction kettle, put the reaction kettle into a constant temperature oven and heat up to 200 ° C, continue heating for 48 hours, then place the reaction kettle at room temperature to cool, and the product Centrifugation gave a solid product.

[0057] (4) The ...

Embodiment 3

[0065] Synthesis of plasmonic resonance nanomaterial ITO in the combined frequency region of infrared spectroscopy, surface modification with p-mercaptopyridine as probe molecule, and SENIR and SEIRAS detection by direct method and potassium bromide tablet method.

[0066] 1. Synthesis of plasmon resonance nanomaterial ITO in the combined frequency region of infrared spectrum:

[0067] The method is the same as example 1.

[0068] 2. Surface modification using p-mercaptopyridine as probe molecule:

[0069] 10 μL of 10 -10 The ethanol solution of mol / L p-mercaptopyridine was added dropwise on 0.01 g of ITO nanoparticle powder, and then dried naturally to obtain the ITO nanoparticle powder with probe molecules modified on the surface.

[0070] 3. SENIR and SEIRAS detection by direct method and potassium bromide tablet method:

[0071] In the near-infrared region, the SENIR test can be performed directly, and in the mid-infrared region, the potassium bromide tablet method can ...

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Abstract

The invention relates to a method for adopting an ITO nano-material as a surface enhanced substrate of an infrared spectrum combined frequency area, belonging to the field of nano-techniques and new materials and particularly relates to an innovation method for surface enhanced near infrared (SENIR) detection and surface enhanced infrared absorption spectrum (SEIRAS) detection on a probe molecule in an infrared spectrum combined frequency area (with a length range of 0.7-7.7 microns) by taking a semiconductor nano-material or membrane indium tin oxide (ITO) as a substrate. The method comprises the three steps of synthesizing surface plasmon resonance nano-material ITO, carrying out surface modification preparation on the probe molecule and carrying out SENIR and SEIRAS detection on the probe molecule by taking the ITO nano-particles, films or sol materials as novel SENIR and SEIRAS substrates. The enhanced substrate is used for detecting that SENIR and SEIRAS signals adsorbed to the surface of the ITO nano-material are obviously stronger than infrared signals in the combined frequency area of a probe molecule body. By virtue of the method, the selection range of the substrate material is broadened for the research of an SEIRAS effect; the method is of brand-new extension of an infrared spectrum detection function.

Description

technical field [0001] The invention belongs to the field of nanotechnology and new materials, and specifically relates to a semiconductor nanomaterial or a thin film indium tin oxide (Indium Tin Oxide, ITO) as a substrate, which is used to detect probes in the combined frequency region of infrared spectrum (wavelength range 0.7-7.7 μm). Innovative methods and applications for surface-enhanced near infrared (SENIR) and surface-enhanced infrared absorption spectroscopy (SEIRAS) detection of molecules. Background technique [0002] In 1980, Hartstein et al. used the total internal reflection method to study the adsorption of p-nitrobenzoic acid (PNBA) and other molecules by island-like silver and gold films sputtered on silicon substrates, and discovered surface-enhanced infrared absorption spectroscopy (SEIRAS) for the first time. Phenomenon. Subsequently, Hatta et al. repeated the experiment and confirmed the existence of SEIRAS. This discovery opened up the research field...

Claims

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Application Information

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IPC IPC(8): G01N21/35G01N21/359G01N21/63B82Y30/00B82Y40/00B82Y15/00
CPCG01N21/35B82Y15/00B82Y30/00B82Y40/00G01N21/359G01N21/63
Inventor 阮伟东李亚丽周铁莉李倩文雷书俊宋薇韩晓霞王旭赵冰
Owner JILIN UNIV
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