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:
Oct. 13, 2015
Filed:
Jan. 03, 2009
Peter Ho, Singapore, SG;
Lay-lay Chua, Singapore, SG;
Shuai Wang, Singapore, SG;
Perq-jon Chia, Singapore, SG;
Ghim Siong Goh, Singapore, SG;
Peter Ho, Singapore, SG;
Lay-Lay Chua, Singapore, SG;
Shuai Wang, Singapore, SG;
Perq-Jon Chia, Singapore, SG;
Ghim Siong Goh, Singapore, SG;
NATIONAL UNIVERSITY OF SINGAPORE, Singapore, SG;
Abstract
A functionalised graphene oxide and a method of making a functionalized graphene oxide comprising: (i) oxidizing graphite to form graphite oxide wherein the graphene sheets which make up the graphite independently of each other have a basal plane fraction of carbon atoms in the sp-hybridised state between 0.1 and 0.9, wherein the remainder fraction comprises sp-hybridised carbon atoms which are bonded to oxygen groups selected from hydroxyl and/or epoxy and/or carboxylic acid; and (ii) exfoliating and in-situ functionalizing the graphite oxide surface with one or more functional groups such that fictionalization of the surface is effected at a concentration greater than one functional group per 100 carbon atoms and less than one functional group per six carbon atoms. The functionalized graphene oxide is dispersible at high concentrations in appropriate solvents without aggregating or precipitating over extended periods at room temperature.