Printed sensor with vibrant colorimetric particles

Patent metadata

Field	Value
Publication number	US-11614409-B2
Application number	US-201816227807-A
Country	US
Kind code	B2
Filing date	Dec 20, 2018
Priority date	Dec 20, 2018
Publication date	Mar 28, 2023
Grant date	Mar 28, 2023

Abstract

A colorimetric sensor has a first material deposited on a surface, and sensing particles on a surface of the first material, wherein the sensing particles comprise sensing species dispersed into porous host structures, such that at least a portion of the sensing particles is exposed to an ambient environment, wherein the first material attaches the sensing particles to surface. A method of forming a colorimetric sensor including depositing a first material onto a substrate, providing porous sensing particles, wherein the sensing particles comprise sensing species dispersed into a porous host structure, and embedding the porous sensing particles onto a surface of the deposited first material, wherein the first material attaches the sensing particles to the substrate such that at least a portion of the sensing particles is exposed to an ambient environment.

First claim

What is claimed is:

1. A colorimetric sensor, comprising:
a first material comprising an ink deposited on a substrate; and
sensing particles on a surface of the first material, wherein the sensing particles comprise:
a second material comprising an aerogel containing porous host structures; and
a third material comprising a sensing species dispersed into the porous host structures, such that at least a portion of the sensing particles is exposed to an ambient environment, wherein the first material attaches the sensing particles to the substrate.

2. The colorimetric sensor of claim 1 , wherein the first material is transparent.

3. The colorimetric sensor of claim 1 , wherein the porous host structures have a specific surface area of at least 100 m 2 /g.

4. The colorimetric sensor of claim 1 , wherein the porous host structures are one of either a polymeric material, a metal oxide, or a ceramic material.

5. The colorimetric sensor of claim 1 , wherein the sensing particles are selected to have a color of the sensing particles change in the presence of an analyte, wherein the color change occurs in the wavelength range of 200-4000 nm.

6. The colorimetric sensor of claim 1 , wherein the sensing particles are selected to have a color of the sensing particles change in the presence of an analyte, wherein the color change occurs in the wavelength range of 200-800 nm.

7. The colorimetric sensor of claim 1 , wherein the porous host structures comprises a radical crosslinked polymer network.

8. The colorimetric sensor of claim 1 , wherein the sensing species comprise one of an organic molecule, a polymer, a salt, an inorganic complex, a nanoparticle, or a combination of therein.

9. The colorimetric sensor of claim 8 , wherein the sensing species has the characteristic of being chemically reactive with an analyte.

10. The colorimetric sensor of claim 1 , wherein the ink comprises an inkjet ink.

11. The colorimetric sensor of claim 1 , wherein the ink comprises a curable ink.

12. The colorimetric sensor of claim 1 , wherein the curable ink comprises one of a thermally curable ink or an ultraviolet curable ink.

13. The colorimetric sensor of claim 1 , wherein the ink is deposited by one of inkjet printing, screen printing, spray-coating, doctor blading, slot die coating, and lamination.

14. The colorimetric sensor of claim 1 , wherein the substrate comprises one of paper, plastic, wool, polymers, glass, metal, ceramic, fabric, adhesive tape, and cardboard.

Assignees

• Palo Alto Res Ct Inc

Inventors

• Iftime Gabriel
• Chintapalli Mahati
• Bulger Eli
• Jackson Warren
• Doris Sean Emerson
• Rivest Jessica Louis Baker
• Cocker Eric
• Williams Antonio
• Pham Crystal

Classifications

• G01N21/78 Primary

  producing a change of colour · CPC title

• G01N21/6447

  by visual observation · CPC title

• G01N33/52

  Use of compounds or compositions for colorimetric, spectrophotometric or fluorometric investigation, e.g. use of reagent paper {and including single- and multilayer analytical elements (immunological elements G01N33/54386; involving labelled immunochemicals G01N33/58; for haemoglobin or occult blood G01N33/72)} · CPC title

• G01N21/29

  using visual detection (G01N21/31 takes precedence) · CPC title

• G01N2021/7786

  Fluorescence · CPC title