Synthesis, characterization, and multilayer assembly of pH sensitive graphene-polymer nanocomposites.

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Show simple item record Liu, J Tao, L Yang, W Li, D Boyer, C Wuhrer, R Braet, F Davis, TP 2011-02-07T06:23:10Z 2010-06
dc.identifier.citation Langmuir : the ACS journal of surfaces and colloids, 2010, 26 (12), pp. 10068 - 10075
dc.identifier.issn 0743-7463
dc.identifier.other C1 en_US
dc.description.abstract pH sensitive graphene-polymer composites have been prepared by the modification of graphene basal planes with pyrene-terminated poly(2-N,N'-(dimethyl amino ethyl acrylate) (PDMAEA) and poly(acrylic acid) (PAA) via pi-pi stacking. The pyrene-terminal PDMAEA and PAA were synthesized using reversible addition-fragmentation chain transfer (RAFT) polymerization with a pyrene-functional RAFT agent. The graphene-polymer composites were found to demonstrate phase transfer behavior between aqueous and organic media at different pH values. Atomic force microscopy (AFM) analysis revealed that the thicknesses of the graphene-polymer sheets were approximately 3.0 nm when prepared using PDMAEA (M(n): 6800 and PDI: 1.12). The surface coverage of polymer chains on the graphene basal plane was calculated to be 5.3 x 10(-11) mol cm(-2) for PDMAEA and 1.3 x 10(-10) mol cm(-2) for PAA. The graphene-polymer composites were successfully characterized using X-ray photoelectron spectroscopy (XPS), attenuated total reflection infrared (ATR-IR) spectroscopy, and thermogravimetric analysis (TGA). Self-assembly of the two oppositely charged graphene-polymer composites afforded layer-by-layer (LbL) structures as evidenced by high-resolution scanning electron microscopy (SEM) and quartz crystal microbalance (QCM) measurements.
dc.format Print
dc.language eng
dc.relation.isbasedon 10.1021/la1001978
dc.title Synthesis, characterization, and multilayer assembly of pH sensitive graphene-polymer nanocomposites.
dc.type Journal Article
dc.parent Langmuir : the ACS journal of surfaces and colloids
dc.journal.volume 12
dc.journal.volume 26
dc.journal.number 12 en_US
dc.publocation Washington en_US
dc.identifier.startpage 10068 en_US
dc.identifier.endpage 10075 en_US SCI.Centre of Expertise Microstructural Analysis en_US
dc.conference Verified OK en_US
dc.for 0903 Biomedical Engineering
dc.personcode 880536
dc.percentage 100 en_US Biomedical Engineering en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US en_US
dc.location.activity ISI:000278427600122 en_US
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
utslib.copyright.status Closed Access 2015-04-15 12:17:09.805752+10
pubs.consider-herdc true
utslib.collection.history Closed (ID: 3)

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