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:
Nov. 26, 2013
Filed:
Apr. 14, 2011
Robert C. Haddon, Riverside, CA (US);
Irina Kalinina, Riverside, CA (US);
Elena Bekyarova, Riverside, CA (US);
Robert C. Haddon, Riverside, CA (US);
Irina Kalinina, Riverside, CA (US);
Elena Bekyarova, Riverside, CA (US);
Carbon Solutions, Inc., Riverside, CA (US);
Abstract
Embodiments of the present disclosure present systems and methods for the synthesis of carbon nanotubes (CNTs) functionalized with mono-terminated, protected polyethylene glycol (PEG). As compared with bi-functional PEG, mono-terminated PEG the PEG-THFF oligomer has only one reaction site. The use of mono-terminated PEG may enhance the solubility of CNTs functionalized with mono-terminated PEG by inhibiting cross-linking between nanotubes and leads to a dramatic increase in aqueous solubility. In an example, single-walled carbon nanotubes functionalized with PEG having a tetrahydrofurfuryl (THFF) terminal group (SWNT-PEG-THFF) is found to disperse in water by ultrasonication and forms stable viscous dispersions at concentrations as high as about 9 g/L. This result exceeds the solubility of a previously reported SWNT-PEG graft copolymer, approximately 6 g/L, by more than 30%.