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dc.contributor.authorTruskewycz, A
dc.contributor.authorBeker, S
dc.contributor.authorBall, AS
dc.contributor.authorCole, I
dc.date.accessioned2020-01-16T00:09:21Z
dc.date.available2020-01-16T00:09:21Z
dc.date.issued2019
dc.identifier.issn2215-0161
dc.identifier.doi10.1016/j.mex.2019.02.014
dc.identifier.urihttp://hdl.handle.net/10072/390507
dc.description.abstractSolid or liquid platforms have been traditionally employed for measuring the fluorescent properties of quantum carbon dots (QCD). Hydrogels possess both liquid and solid properties which allow them to overcome several shortfalls of both solid and liquid sensing platforms. Hydrogels offer a three dimensional platform which can house nanoparticles with different attributes (i.e. fluorescent QCD’s) and prevents their aggregation. Here, we incorporate QCD’s (made from the hydrothermal treatment of 1-naphthylamine and citric acid) into the matrix of a zinc oxide hydrogel. This nanocomposite was shown to have hexavalent chromium (Cr6+) specific fluorescence quenching properties. Detailed fluorescence analysis of the hydrogel with Cr6+ was conducted in a high throughput manner by loading the hydrogel into wells of a black 96-well plate. Fluorescence quenching of the hydrogel-QCD-nanocomposites in the presence of dilutions of Cr6+ was measured using a fluorescence spectrophotometer and showed incremental fluorescence decreases with increasing Cr6+ concentration. Furthermore, this was quantitatively confirmed by Stern–Volmer plots showing a linear quenching trend (R2 = 0.9975) when comparing fluorescence intensities against increasing Cr6+ concentrations (0.234–1.875 μM). This technology can be applied for routine water quality testing in agricultural, natural and potable water sources for the early detection of heavy metal pollutants.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom437
dc.relation.ispartofpageto441
dc.relation.ispartofjournalMethodsX
dc.relation.ispartofvolume6
dc.subject.fieldofresearchMaterials Engineering
dc.subject.fieldofresearchcode0912
dc.titlePhotoluminescence measurements of carbon quantum dots within three-dimensional hydrogel matrices using a high throughput 96 well plate method
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationTruskewycz, A; Beker, S; Ball, AS; Cole, I, Photoluminescence measurements of carbon quantum dots within three-dimensional hydrogel matrices using a high throughput 96 well plate method, MethodsX, 2019, 6, pp. 437-441
dcterms.licensehttps://creativecommons.org/licenses/by/4.0/
dc.date.updated2020-01-16T00:06:22Z
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© The Author(s) 2019. This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorCole, Ivan


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