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dc.contributor.authorDaniels, C.R.
Tauzin, L.J.
Foster, E.
Advincula, R.C.
Landes, C.F.
dc.date.accessioned 2015-01-05T20:03:20Z
dc.date.available 2015-01-05T20:03:20Z
dc.date.issued 2013
dc.identifier.citation Daniels, C.R., Tauzin, L.J., Foster, E., et al.. "On the pH-Responsive, Charge-Selective, Polymer-Brush-Mediated Transport Probed by Traditional and Scanning Fluorescence Correlation Spectroscopy." The Journal of Physical Chemistry B, 117, no. 16 (2013) American Chemical Society: 4284-4290. http://dx.doi.org/10.1021/jp3053828.
dc.identifier.urihttps://hdl.handle.net/1911/78850
dc.description.abstract The complete and reversible charge-selective sequestration of fluorophores by a weak polyelectrolyte brush, poly(2-(dimethylamino)ethylmethacrylate) (PDMAEMA) was demonstrated using fluorescence correlation spectroscopy (FCS). The chemistry and thickness of the weak polyelectrolyte PDMAEMA was tuned reversibly between neutral and cationic polymer forms. Thus, by switching the pH successively, the brush architecture was tuned to selectively trap and release anionic dye probes while continuously excluding cationic molecules. In addition, line-scan FCS was implemented and applied for the first time to a synthetic polymer system and used to identify a new, slower diffusion time on the order of seconds for the sequestered anionic probe under acidic conditions. These results, which quantify the selective sequestration properties of the PDMAEMA brush, are important because they enable a better understanding of transport in polymers and establish a spectroscopic means of evaluating materials with proposed applications in separations science, charge storage/release, and environmental remediation.
dc.language.iso eng
dc.publisher American Chemical Society
dc.rights This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Chemical Society.
dc.title On the pH-Responsive, Charge-Selective, Polymer-Brush-Mediated Transport Probed by Traditional and Scanning Fluorescence Correlation Spectroscopy
dc.type Journal article
dc.contributor.funder National Science Foundation
dc.contributor.funder National Institutes of Health
dc.contributor.funder American Chemical Society Petroleum Research Fund
dc.citation.journalTitle The Journal of Physical Chemistry B
dc.subject.keywordpoly(2-(dimethylamino) ethyl-methacrylate) (PDMAEMA)
heterogeneous diffusion
fluorescent probe
thin film
dc.citation.volumeNumber 117
dc.citation.issueNumber 16
dc.type.dcmi Text
dc.identifier.doihttp://dx.doi.org/10.1021/jp3053828
dc.identifier.pmcid PMC3671586
dc.identifier.pmid 23092304
dc.identifier.grantID CBET-0854979 (National Science Foundation)
dc.identifier.grantID DMR 106776 (National Science Foundation)
dc.identifier.grantID CBET-1134417 (National Science Foundation)
dc.identifier.grantID CHE-1151647 (National Science Foundation)
dc.identifier.grantID GM94246-01A1 (National Institutes of Health)
dc.type.publication post-print
dc.citation.firstpage 4284
dc.citation.lastpage 4290


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