Functionalization of reduced graphene oxide with polysulfone brushes enhance antibacterial properties and reduce human cytotoxicity

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Show simple item record Peña-Bahamonde, Janire San Miguel Arnanz, Verónica Nguyen, Hang N. Ozisik, Rahmi Rodrigues, Debora F. Cabanelas Valcárcel, Juan Carlos 2017-05-10T11:54:18Z 2019-01-01T23:00:06Z 2017-01
dc.identifier.bibliographicCitation Carbon, 2017, 111, pp. 258-268.
dc.identifier.issn 0008-6223
dc.description.abstract The present study reports two routes to modify reduced graphene oxide (rGO) nanosheets with polysulfone (PSU) brushes via nitrene chemistry. The PSU polymer is bonded to rGO at the extremity (rGO-PSU end) and at the middle of the PSU chain (rGO-PSU mid). The resulting rGO-PSU synthetic products are carefully characterized by Raman and FTIR spectroscopy, XPS, TEM, and thermogravimetric analysis, evidencing the successful grafting of PSU onto rGO surfaces. The long-term stability of these nanosheets is also determined in common solvents. The antibacterial properties of polymer-functionalized rGO against the planktonic Bacilus subtilis and Escherichia coli are also investigated. It is established that the antimicrobial properties of these nanocomposites are due to the production of reactive oxygen species. The results also demonstrate that rGO-PSU mid presents better antimicrobial properties due to shorter polymer chains, which improves the contact of the microorganisms with the graphene surface.
dc.description.sponsorship This work was financially supported by the Spanish Ministry of Economy and Competitiveness (MAT2014-57557-R), and partially supported by the U.S. National Science Foundation Career Award (NSF Award #104093). R.O. would like acknowledge support from U.S. National Science Foundation (CMMI-1538730 and DUE-CMMI-1538730/1003574). Janire Peña wants to acknowledge mobility grant from Carlos III University and Instituto Tecnológico de Química y Materiales “Alonso Barba”. Authors acknowledge Dr. A. Esteban-Arranz for giving access to ATR equipment.
dc.format.extent 11
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2017 Elsevier
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.subject.other Carbon nanotubes
dc.subject.other Click chemistry
dc.subject.other Raft polymerization
dc.subject.other Raman-spectroscopy
dc.subject.other Water-treatment
dc.subject.other Graphite oxide
dc.subject.other Adsorption
dc.subject.other Nanosheets
dc.subject.other Route
dc.subject.other Acid
dc.title Functionalization of reduced graphene oxide with polysulfone brushes enhance antibacterial properties and reduce human cytotoxicity
dc.type article
dc.subject.eciencia Materiales
dc.subject.eciencia Química
dc.rights.accessRights openAccess
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 258
dc.identifier.publicationlastpage 268
dc.identifier.publicationtitle Carbon
dc.identifier.publicationvolume 111
dc.identifier.uxxi AR/0000018574
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