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dc.contributor.authorTruskewycz, A
dc.contributor.authorBeker, SA
dc.contributor.authorBall, AS
dc.contributor.authorMurdoch, B
dc.contributor.authorCole, I
dc.date.accessioned2020-07-14T03:09:13Z
dc.date.available2020-07-14T03:09:13Z
dc.date.issued2020
dc.identifier.issn0003-2670
dc.identifier.doi10.1016/j.aca.2019.11.053
dc.identifier.urihttp://hdl.handle.net/10072/395371
dc.description.abstractHydrogels offer a unique medium for sensing applications as they can draw upon the benefits of both solid and liquid sensing platforms. Incorporation of functionalised fluorescent nanoparticles within the hydrogel matrix results in a three-dimensional nanocomposite capable of interacting with water-soluble analytes, facilitating quantitative sensing applications. Here, we report the solvothermal synthesis of a novel Polyvinylpyrrolidone assembled hydrogel stabilised with zinc oxide quantum dots which does not require additional organic crosslinkers. Functionalization of these hydrogel with novel, brightly photoluminescent 2-amino-2-methyl-1-propanol quantum carbon dots (quantum yield of 62.5%) results in a composite capable of specific interaction with hexavalent chromium. Quantitative fluorescence quenching measurements of the hydrogel composite in the presence of hexavalent chromium shows a limit of detection of 1.2 μM Cr6+ which is below maximum allowable concentrations for drinking water. The hydrogel composite is cheap to manufacture and can be injected into 96 well plates for high throughput analysis of environmental water samples. These results are encouraging for the development of hydrogels and polymetric films to be used as novel fluorescent sensing platforms for environmental diagnostic applications.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom126
dc.relation.ispartofpageto135
dc.relation.ispartofjournalAnalytica Chimica Acta
dc.relation.ispartofvolume1099
dc.subject.fieldofresearchAnalytical Chemistry
dc.subject.fieldofresearchOther Chemical Sciences
dc.subject.fieldofresearchcode0301
dc.subject.fieldofresearchcode0399
dc.subject.keywordsHexavalent chromium
dc.subject.keywordsHydrogel
dc.subject.keywordsPolyvinylpyrrolidone
dc.subject.keywordsQuantum dots
dc.subject.keywordsSensing
dc.titleIncorporation of quantum carbon dots into a PVP/ZnO hydrogel for use as an effective hexavalent chromium sensing platform
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationTruskewycz, A; Beker, SA; Ball, AS; Murdoch, B; Cole, I, Incorporation of quantum carbon dots into a PVP/ZnO hydrogel for use as an effective hexavalent chromium sensing platform, Analytica Chimica Acta, 2020, 1099, pp. 126-135
dcterms.dateAccepted2019-11-20
dc.date.updated2020-07-14T03:06:37Z
gro.hasfulltextNo Full Text
gro.griffith.authorCole, Ivan


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