Method for functionalizing materials and devices comprising such materials

• US 8,679,859 B2
• Filed: 05/28/2009
• Issued: 03/25/2014
• Est. Priority Date: 03/12/2007
• Status: Active Grant

• Current Assignee: Oregon State University (Oregon University System)
• Original Assignee: Oregon State University (Oregon University System)
• Inventors: Yan, Mingdi, Liu, Li-Hong, Wang, Xin, Lerner, Michael M., Maluangnont, Tosapol, Ramstrm, Olof
• Primary Examiner(s): BROWN, MELANIE YU
• Application Number:
  US12/455,269
• Publication Number:
  US 20100028559A1
• Time in Patent Office: 1,762 Days
• Field of Search: 436/518, 436/532, 977/700, 977/734, 977/742
• US Class Current: 436/518
• CPC Class Codes: B82Y 25/00 Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
• CPC Class Codes: C01B 32/19 by exfoliation
• CPC Class Codes: H01F 1/0054 Coated nanoparticles, e.g. nanoparticles coated with organic surfactant

Abstract

Devices comprising functionalized materials, and embodiments of a method for making and using such devices, are disclosed. Exemplary devices include ophthalmic devices, nanoparticles, quartz crystal microbalances, microarrays, and nanocomposites. In particular embodiments, device surfaces are modified with monomers and/or polymers, typically carbohydrate monomers and/or polymers. Embodiments of a method for making and using such devices are disclosed. Monomers and/or polymers are covalently bonded to surfaces using functionalized perhalophenylazides. In some embodiments, device surfaces are functionalized with a perhalophenylazide. One or more monomers and/or polymers subsequently are covalently bonded to the device surface using the perhalophenylazide. In other embodiments, monomers and/or polymers are derivatized with a functionalized perhalophenylazide. The derivatized monomers and/or polymers then are covalently bonded to the device surface using the perhalophenylazide. In some embodiments, graphite is functionalized with perhalophenylazide to produce a functionalized graphene sheet. In other embodiments, graphene sheets are covalently attached to functionalized substrates.

Claims

1. A device, comprising:

at least a substrate; and

graphene covalently bonded to at least a portion of a surface of the substrate using a perhalophenylazide.

2. The device of claim 1, where the substrate is a hematite nanoparticle and the perhalophenylazide comprises a phosphate-perfluorophenylazide.

3. The device of claim 1 where the substrate is a silica nanoparticle and the perhalophenylazide is a silane-perhalophenylazide.

4. The device of claim 1, where the substrate comprises silicon or gold.

5. The device of claim 4, where the device is an integrated circuit.

6. The device of claim 4 where the substrate comprises silicon and the perhalophenylazide is a silane perfluorophenylazide.

7. The device of claim 4 where the substrate comprises gold and the perhalophenylazide is a thiol-perfluorophenylazide.

8. The device of claim 1 where the substrate comprises copper.

9. A method for immobilizing graphene on a silicon wafer, comprising:

providing a silicon wafer;

coating the silicon wafer with perfluorophenylazide-silane to produce a functionalized wafer;

pressing graphite onto the functionalized wafer;

exposing the graphite and functionalized wafer to heat or ultraviolet irradiation; and

removing the graphite to produce a graphene-perfluorophenylazide-silicon wafer.