Co-Polymer Films for Sensors

• US 20110060114A1
• Filed: 11/16/2010
• Published: 03/10/2011
• Est. Priority Date: 06/19/2006
• Status: Active Grant

• Current Assignee: California Institute of Technology
• Original Assignee: California Institute of Technology
• Inventors: Taylor, Charles, Kisor, Adam, Manatt, Kenneth S., Shevade, Abhijit V., Yen, Shiao-Pin S., Goddard, William A., Ryan, Margaret A., Blanco, Mario, Homer, Margie L., Jewell, April D.
• Granted Patent: US 8,338,552 B2
• Time in Patent Office: Days
• US Class Current: 526/265
• CPC Class Codes: C08F 212/08 Styrene
• CPC Class Codes: C08F 26/06 by a heterocyclic ring containing nitrogen

Abstract

Embodiments include a sensor comprising a co-polymer, the co-polymer comprising a first monomer and a second monomer. For some embodiments, the first monomer is poly-4-vinyl pyridine, and the second monomer is poly-4-vinyl pyridinium propylamine chloride. For some embodiments, the first monomer is polystyrene and the second monomer is poly-2-vinyl pyridinium propylamine chloride. For some embodiments, the first monomer is poly-4-vinyl pyridine, and the second monomer is poly-4-vinyl pyridinium benzylamine chloride. Other embodiments are described and claimed.

Claims

1. An SO₂ gas sensor comprising an SO₂ sorbing co-polymer, the co-polymer comprising:

a first monomer selected from the group consisting of monomers belonging to the pyridine family and monomers belonging to the polystyrene family; and

a second monomer selected from the group consisting of monomers belonging to the pyridinium alkyl amine halide family and monomers belonging to the aryl pyridinium alkyl amine halide family.

13. The gas sensor as set forth in claim 1, further comprising:

a substrate, wherein the co-polymer is formed on the substrate as a film.

14. The gas sensor as set forth in claim 1, the first monomer comprising poly-4-vinyl pyridine, and the second monomer comprising poly-4-vinyl pyridinium propylamine chloride.

15. The gas sensor as set forth in claim 14, wherein the first monomer is at a relative molar concentration in a range of 0.2 to 0.8, and the second monomer is at a relative molar concentration in the range of 0.2 to 0.8.

16. The gas sensor as set forth in claim 14, wherein the co-polymer is such that there is one part of the first monomer to four parts of the second monomer, or one part of the first monomer to one part of the second monomer.

17. The gas sensor as set forth in claim 1, the first monomer comprising polystyrene, and the second monomer comprising poly-2-vinyl pyridinium propylamine chloride.

18. The gas sensor as set forth in claim 17, wherein the first monomer is at a relative molar concentration in a range of 0.2 to 0.8, and the second monomer is at a relative molar concentration in the range of 0.2 to 0.8.

19. The gas sensor as set forth in claim 17, wherein the co-polymer is such that the first and second monomers are at relative molar concentrations of 0.3 and 0.7, respectively.

20. The gas sensor as set forth in claim 1, the first monomer comprising poly-4-vinyl pyridine, and the second monomer comprising poly-4-vinyl pyridinium benzylamine chloride.

21. The gas sensor as set forth in claim 20, wherein the first monomer is at a relative molar concentration in a range of 0.2 to 0.8, and the second monomer is at a relative molar concentration in the range of 0.2 to 0.8.

22. The gas sensor as set forth in claim 20, wherein the co-polymer is such that there is one part of the first monomer to one part of the second monomer.

2-12. -12. (canceled)