TCDA/zinc oxide nanocomposites and film sensors

Patent metadata

Field	Value
Publication number	US-9428685-B2
Application number	US-201614997667-A
Country	US
Kind code	B2
Filing date	Jan 18, 2016
Priority date	Aug 28, 2014
Publication date	Aug 30, 2016
Grant date	Aug 30, 2016

Abstract

Novel TCDA/ZnO compositions in which the ZnO particles have an average particle size less than 100 nm are disclosed. Reversible thermochromatic sensors employing the TCDA nanocomposites and methods of printing TCDA/ZnO nanocomposite thin films forming the reversible thermochromatic sensors using inkjet printing techniques are also disclosed.

First claim

What is claimed is:

1. A thermochromically reversible composition comprising TCDA and ZnO nanoparticles wherein the ZnO nanoparticles are unalloyed and have an average particle size of 0.01-99 nm.

2. The composition according to claim 1 comprising 6 to 99.5 wt % of TCDA.

3. The composition according to claim 1 comprising 20 to 99.5 wt % of TCDA.

4. The composition according to claim 1 comprising 50 to 97.5 wt % of TCDA.

5. The composition according to claim 1 comprising 85 to 97.5 wt % of TCDA.

6. The composition according to claim 1 comprising 0.5 to 94.0 wt % of ZnO.

7. The composition according to claim 1 comprising 0.5 to 80.0 wt % of ZnO.

8. The composition according to claim 1 comprising 2.5 to 50.0 wt % of ZnO.

9. The composition according to claim 1 comprising 2.5 to 15.0 wt % of ZnO.

10. The composition according to claim 1 wherein the ZnO nanoparticles have an average particle size of 0.1-99 nm.

11. The composition according to claim 1 wherein the ZnO nanoparticles have an average particle size of 0.1-15 nm.

12. The composition according to claim 1 consisting of TCDA and 0.5-94 wt % of ZnO.

13. The composition according to claim 1 consisting of TCDA and 0.5 to 80.0 wt % of ZnO.

14. The composition according to claim 1 consisting of TCDA and 2.5 to 50.0 wt % of ZnO.

15. The composition according to claim 1 consisting of TCDA and 2.5 to 15.0 wt % of ZnO.

16. The composition according to claim 1 wherein the TCDA comprises poly-TCDA.

17. A thermochromically reversible film sensor comprising poly-TCDA and ZnO nanoparticles disposed on a substrate wherein the ZnO nanoparticles are unalloyed and have an average particle size of 0.01-99 nm.

18. The thermochromically reversible film sensor according to claim 17 comprising the substrate and a film consisting of poly-TCDA and ZnO nanoparticles disposed on a substrate wherein the ZnO nanoparticles have an average particle size of 0.01-99 nm.

19. The thermochromically reversible film sensor according to claim 17 wherein the film consists of TCDA and 0.5-94 wt % of ZnO.

20. The thermochromically reversible film sensor according to claim 17 comprising a QR code.

21. A method of making a thermochromically reversible film comprising applying a thermochromically reversible composition comprising TCDA and ZnO nanoparticles wherein the ZnO nanoparticles are unalloyed and have an average particle size of 0.01-99 nm to a substrate and subjecting the thermochromically reversible composition to UV irradiation for a duration sufficient to convert at least a portion of the TCDA to poly-TCDA.

22. The method according to claim 21 comprising applying the thermochromically reversible composition to a substrate using an inkjet printer.

Assignees

• New Jersey Inst Technology

Inventors

• Wu Aide
• Iqbal Zafar
• Federici John

Classifications

• G01K11/16

  of organic materials · CPC title

• C09K9/02 Primary

  Organic tenebrescent materials · CPC title

• C09K2211/14

  Macromolecular compounds · CPC title

• B05D1/02

  performed by spraying · CPC title

• G06K19/06037

  multi-dimensional coding · CPC title