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Surface reinforced Raman scattering detection adhesive tape and preparation method and application thereof

A surface-enhanced Raman and detection method technology, which is applied in Raman scattering, adhesives, film/sheet adhesives, etc., can solve complex surface treatment problems, SERS signal interference, complex fiber structures, etc., and achieve easy Precise preparation and detection results, simple operation

Active Publication Date: 2016-11-23
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these SERS substrates are carried on paper materials, but due to the complex structure of fibers on the surface of paper, it is easy to interfere with the SERS signal.
In addition, these paper SERS substrate materials are difficult to deal with some complex surfaces in practical applications.

Method used

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  • Surface reinforced Raman scattering detection adhesive tape and preparation method and application thereof
  • Surface reinforced Raman scattering detection adhesive tape and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0043] (2) The preparation of the gold nanoflower base tape includes: after fully ultrasonically dispersing the gold nanoflower particle solution, 10 μL of the gold nanoflower particle solution is dropped on a specific position of the tape, dried at room temperature, and set aside.

[0044] (3) Extraction of the test object: cover the specific position of the test object extraction tape on the surface of the test object, after sticking tightly, tear it off and set aside.

[0045] (4) The method for detecting Raman signals: the specific position on the gold nanoflower base tape on which the gold nanoflower particles are fixed and the specific position on the test substance extraction tape are overlapped and tightly bonded. Use portable Raman to irradiate the specific position of the overlapped tape with laser, and read the Raman signal spectrum.

Embodiment 1

[0047] Example 1: Using surface-enhanced Raman scattering tape to detect residual pesticide carbaryl on apple skin

[0048] 1. Preparation of gold nanoflower particles: reflux chloroauric acid and trisodium citrate in the aqueous phase reaction system at a constant temperature of 100-150°C, so that the color of the reaction solution changes from light yellow→light purple→light red→wine red to obtain the particle size 18-60nm, plasma optical wavelength 520-560cm -1 Nano-gold spheres, disperse the nano-gold spheres in 6-mercapto-1-hexanol solution, stir for 24 hours, centrifuge to remove the supernatant, and then add HAuCl containing 4 , CTAB and ascorbic acid growth solution, heated and reacted in a water bath at 30-50°C for 24 hours to obtain a gold nanoflower particle solution, for subsequent use (wherein the morphology of the gold nanoflower particle can be referred to figure 1 ).

[0049] 2. The preparation of the gold nanoflower base tape includes: after fully ultrasonic...

Embodiment 2

[0053] Example 2: Detection of residual pesticide imophos on cabbage leaf epidermis with surface-enhanced Raman scattering tape

[0054] 1. Preparation of gold nanoflower particles: reflux chloroauric acid and trisodium citrate in the aqueous phase reaction system at a constant temperature of 100-150°C, so that the color of the reaction solution changes from light yellow→light purple→light red→wine red to obtain the particle size 18-60nm, plasma optical wavelength 520-560cm -1 Nano-gold spheres were dispersed in 6-mercapto-1-hexanol solution, stirred for 24 hours, centrifuged to remove the supernatant, and then mixed with HAuCl 4 , growth solution of CTAB and ascorbic acid, heated and reacted in a water bath at 30-50° C. for 24 hours to obtain a gold nanoflower particle solution, which is set aside.

[0055] 2. The preparation of the gold nanoflower base tape includes: after fully ultrasonically dispersing the gold nanoflower particle solution, take 10 μL of the gold nanoflow...

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Abstract

The invention discloses surface reinforced Raman scattering detection adhesive tape. The surface reinforced Raman scattering detection adhesive tape comprises a gold nano substrate adhesive tape and detection object extraction adhesive tape. The gold nano substrate adhesive tape comprises first adhesive tape, and gold nano particles with Raman activity are attached to a selected area of the gold nano substrate adhesive tape. The detection object extraction adhesive tape comprises second adhesive tape, and is provided with a selected area to which to-be-detected matter is attached. The selected area of the first adhesive tape and the selected area of the second adhesive tape can be attached, bonded and fixed to each other. Commercialized transparent adhesive tape is adopted as the first adhesive tape or the second adhesive tape. The invention further discloses a preparation method and application of the surface reinforced Raman scattering detection adhesive tape. The surface reinforced Raman scattering detection adhesive tape is simple in structure, easy to prepare, low in cost, easy and fast to operate during use and precise in detection result.

Description

technical field [0001] The invention particularly relates to a surface-enhanced Raman scattering (SERS) detection tape, its preparation method and application, and belongs to the field of food pesticide detection. technical background [0002] The carrier of the traditional SERS (Surface-enhanced Raman scattering) substrate is a glass slide or a silicon wafer, but the current needs of many on-site SERS applications require other cheaper and more portable carriers. In addition, in the actual detection, the existing analyte extraction methods have greater difficulty for the surface of complex detection objects (such as some irregular fruit peels and vegetable leaves). Therefore, the research is cheap, easy to carry, easy to prepare, The easy-to-extract SERS substrate has important practical significance in promoting the practical application of SERS technology. [0003] C.Lee et al loaded gold nanorods on filter paper (ACS Appl.Mater.Interfaces, 2010,2(12),pp 3429–3435); G.Zh...

Claims

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Application Information

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IPC IPC(8): G01N21/65C09J7/02
Inventor 黄又举陈涛陈嘉明
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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