Sers nanosensor for detecting substances produced in plants, manufacturing method thereof, and plant monitoring device using sers nanosensor and method

Patent metadata

Field	Value
Publication number	US-2025003883-A1
Application number	US-202218705360-A
Country	US
Kind code	A1
Filing date	Oct 28, 2022
Priority date	Oct 29, 2021
Publication date	Jan 2, 2025
Grant date	—

Abstract

The present disclosure provides a surface-enhanced Raman scattering (SERS) nanosensor for detecting a substance produced within a plant including a first nanostructure, a second nanostructure containing a metal and disposed on a surface of the first nanostructure to cause SERS, and a polymer material bound to a surface of the second nanostructure, and generating an attraction force that attracts the substance produced within the plant.

First claim

1 . A surface-enhanced Raman scattering (SERS) nanosensor for detecting a substance produced within a plant comprising:
a first nanostructure; a second nanostructure containing a metal and disposed on a surface of the first nanostructure to cause SERS; and a polymer material bound to a surface of the second nanostructure, and generating an attraction force that attracts the substance produced within the plant.

2 . The SERS nanosensor for detecting a substance produced within a plant of claim 1 , wherein the first nanostructure includes a non-metal.

3 . The SERS nanosensor for detecting a substance produced within a plant of claim 1 , wherein the first nanostructure has a shape of a nanoparticle or a nanotube.

4 . The SERS nanosensor for detecting a substance produced within a plant of claim 1 , wherein the first nanostructure includes a silica or a carbon nanotube (CNT).

5 . The SERS nanosensor for detecting a substance produced within a plant of claim 1 , wherein the second nanostructure includes a plurality of nanoparticles.

6 . The SERS nanosensor for detecting a substance produced within a plant of claim 1 , wherein the second nanostructure includes at least one of Ag and Au.

7 . The SERS nanosensor for detecting a substance produced within a plant of claim 1 ,
wherein the first nanostructure includes a silica nanoparticle, wherein the second nanostructure includes a plurality of Ag nanoparticles disposed on a surface of the silica nanoparticle, wherein the silica nanoparticle constitutes a core portion, and the plurality of Ag nanoparticles constitute a shell portion.

8 . The SERS nanosensor for detecting a substance produced within a plant of claim 1 ,
wherein the first nanostructure includes a CNT, wherein the second nanostructure includes a plurality of Au nanoparticles disposed on a surface of the CNT.

9 . The SERS nanosensor for detecting a substance produced within a plant of claim 1 , wherein the polymer material includes PDDA [poly(diallyldimethylammonium chloride)].

10 . The SERS nanosensor for detecting a substance produced within a plant of claim 1 , wherein the substance produced within the plant includes a plant hormone molecule generated by plant stress or disease.

11 . The SERS nanosensor for detecting a substance produced within a plant of claim 1 , wherein the substance produced within the plant includes at least one of phytoalexin, salicylic acid (SA), adenosine triphosphate (ATP), indole-3-acetic acid (IAA), folic acid (FA), thiamine, and nasturlexin.

12 . A plant monitoring apparatus comprising:
a SERS nanosensor for detecting a substance produced within a plant according to claim 1 ; and a Raman spectrometer for detecting a SERS signal generated from the SERS nanosensor.

13 . A plant monitoring method comprising:
introducing a SERS nanosensor for detecting a substance produced within a plant according to claim 1 into a plant; and measuring a SERS signal generated from the SERS nanosensor by using Raman spectroscopy.

14 . A manufacturing method of a surface-enhanced Raman scattering (SERS) nanosensor for detecting a substance produced within a plant comprising:
preparing a first nanostructure; forming a second nanostructure which is disposed on a surface of the first nanostructure, contains a metal and causes SERS; and binding a polymer material which generates an attraction force that attracts the substance produced within the plant to a surface of the second nanostructure.

15 . The manufacturing method of a SERS nanosensor for detecting a substance produced within a plant of claim 14 ,
wherein the first nanostructure includes a silica nanoparticle, wherein the second nanostructure includes a plurality of Ag nanoparticles disposed on a surface of the silica nanoparticle, wherein the silica nanoparticle constitutes a core portion, wherein the plurality of Ag nanoparticles constitute a shell portion.

16 . The manufacturing method of a SERS nanosensor for detecting a substance produced within a plant of claim 15 , comprising:
functionalizing the surface of the silica nanoparticle with a thiol group by using 3-mercaptopropyltrimethoxysilane; forming the plurality of Ag nanoparticles on the surface of the silica nanoparticle by using hexadecylamine and silver nitrate; and functionalizing the surface of the plurality of Ag nanoparticles with the polymer material.

17 . The manufacturing method of a SERS nanosensor for detecting a substance produced within a plant of claim 14 ,
wherein the first nanostructure includes a carbon nanotube (CNT), wherein the second nanostructure include a plurality of Au nanoparticles disposed on a surface of the CNT.

18 . The manufacturing method of a SERS nanosensor for detecting a substance produced within a plant of claim 14 , wherein the polymer material includes PDDA [poly(diallyldimethylammonium chloride)].

19 . The manufacturing method of a SERS nanosensor for detecting a substance produced within a plant of claim 14 , wherein the first nanostructure has a shape of a nanoparticle or a nanotube.

20 . The manufacturing method of a SERS nanosensor for detecting a substance produced within a plant of claim 14 , wherein the second nanostructure includes a plurality of nanoparticles.

Assignees

• Seoul Nat Univ R&Db Foundation

Inventors

• Jeong Dae Hong
• Kwak Seonyeong
• Son Won Ki
• Shin Dong Uk

Classifications

• G01N21/658 Primary

  enhancement Raman, e.g. surface plasmons · CPC title

• G01N33/0098 Primary

  Plants or trees (wood G01N33/46) · CPC title

• G01N21/552

  Attenuated total reflection · CPC title

• G01N21/25

  Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands · CPC title

• G01N33/00

  Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00 · CPC title