Thin film substrates including crosslinked carbon nanostructures and related methods

Patent metadata

Field	Value
Publication number	US-10927006-B2
Application number	US-201815868129-A
Country	US
Kind code	B2
Filing date	Jan 11, 2018
Priority date	Jan 11, 2017
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

A method of making a thin film substrate involves exposing carbon nanostructures to a crosslinker to crosslink the carbon nanostructures. The crosslinked carbon nanostructures are recovered and disposed on a support substrate. A thin film substrate includes crosslinked carbon nanostructures on a support substrate. The crosslinked carbon nanostructures have a crosslinker between the carbon nanostructures. A method of performing surface enhanced Raman spectroscopy (SERS) on a SERS-active analyte involves providing a SERS-active analyte on such a thin film substrate, exposing the thin film substrate to Raman scattering, and detecting the SERS-active analyte.

First claim

What is claimed is:

1. A method of making a thin film substrate, comprising:
forming a solution of carbon nanostructures;
reacting the carbon nanostructures with a crosslinker to form a suspension comprising
crosslinked carbon nanostructures comprising covalent bonds between the crosslinked carbon nanostructures and the crosslinker, the crosslinker comprising a multivalent cation source compound comprising an oligothiophene, an oligoaniline, phenylene sulfide, pyrrole, urethane, a metallic oxide, boron oxide, acetoxysilane, or a combination thereof;

filtering the crosslinked carbon nanostructures from the suspension; and
disposing the crosslinked carbon nanostructures on a support substrate.

2. The method of claim 1 , wherein reacting the carbon nanostructures with a crosslinker comprises exposing functionalized carbon nanostructures to the crosslinker.

3. The method of claim 1 , wherein reacting the carbon nanostructures with a crosslinker comprises exposing carbon nanotubes or graphene to the crosslinker.

4. The method of claim 1 , wherein reacting the carbon nanostructures with a crosslinker comprises crosslinking the carbon nanostructures in solution.

Assignees

• Baker Hughes Holdings Llc

Inventors

• Ventura Darryl N
• Dolog Rostyslav
• Murugesan Sankaran
• Suresh Radhika
• Khabashesku Valery N
• Darugar Qusai

Classifications

• G01N21/658

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

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• C01B32/194

  After-treatment · CPC title

• B82B3/0038 Primary

  Manufacturing processes for forming specific nanostructures not provided for in groups B82B3/0014 - B82B3/0033 · CPC title

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title