Journal
MACROMOLECULAR MATERIALS AND ENGINEERING
Volume 296, Issue 2, Pages 131-140Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.201000307
Keywords
biocompatibility; chitosan; drug delivery systems; functionalization of polymers; solution properties
Funding
- Ministry of Education, Science and Technology, Korea [20100000790, 2010-0019308/2010-0019482]
- National Research Foundation of Korea [2009-0078791, R32-2011-000-10174-0, 2010-0019482] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Chitosan-functionalized graphene oxides (FGOCs) were successfully synthesized. FGOCs were found to significantly improve the solubility of the GO in aqueous acidic media. The presence of organic groups was confirmed by means of XPS and TGA. Restoration of the sp(2) carbon network and exfoliation of graphene sheets were confirmed by Raman spectroscopy, UV-visible spectroscopy and WAXD. The SEM and AFM investigations of the resultant FGOCs showed that most of the graphene sheets were individual and few were layered. Controlled release behavior of Ibuprofen and 5-fluorouracil was then investigated. We found that FGOCs are a promising new material for biological and medical applications.
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