The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 23, 2019
Filed:
Aug. 31, 2016
Lockheed Martin Corporation, Bethesda, MD (US);
Aaron G. Sell, Salem, NH (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
Carbon nanomaterials can undergo selective functionalization or defunctionalization in the presence of near-infrared electromagnetic radiation. In particular, semiconducting carbon nanotubes can be selectively functionalized or defunctionalized over metallic carbon nanotubes, which can allow their purification and/or separation to take place. Functionalizing methods can include exposing a carbon nanomaterial to electromagnetic radiation having a wavelength of about 700 nm or greater, and reacting at least a portion of the carbon nanomaterial with a reactive medium in the presence of the electromagnetic radiation to form a functionalized carbon nanomaterial. In the absence of the electromagnetic radiation, the carbon nanomaterial is unreactive with the reactive medium. Defunctionalizing methods can take place similarly in the absence of the reactive medium. Photochemical reactors incorporating a recirculation loop and a near-infrared electromagnetic radiation source can be used in functionalization and defunctionalization methods. In-line sonication can also be provided in the photochemical reactors.