Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/121942
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dc.contributor.authorBalu, R.-
dc.contributor.authorKnott, R.-
dc.contributor.authorElvin, C.M.-
dc.contributor.authorHill, A.J.-
dc.contributor.authorR Choudhury, N.-
dc.contributor.authorDutta, N.K.-
dc.date.issued2019-
dc.identifier.citationBiosensors, 2019; 9(4):1-13-
dc.identifier.issn2079-6374-
dc.identifier.issn2079-6374-
dc.identifier.urihttp://hdl.handle.net/2440/121942-
dc.description.abstractHerein we report the first example of a facile biomineralization process to produce ultra-small-sized highly fluorescent aqueous dispersions of platinum noble metal quantum clusters (Pt-NMQCs) using a multi-stimulus responsive, biomimetic intrinsically disordered protein (IDP), Rec1-resilin. We demonstrate that Rec1-resilin acts concurrently as the host, reducing agent, and stabilizer of the blue-green fluorescent Pt-NMQCs once they are being formed. The photophysical properties, quantum yield, and fluorescence lifetime measurements of the synthesized Pt-NMQCs were examined using UV-Vis and fluorescence spectroscopy. The oxidation state of the Pt-NMQCs was quantitatively analyzed using X-ray photoelectron spectroscopy. Both a small angle X-ray scattering technique and a modeling approach have been attempted to present a detailed understanding of the structure and conformational dynamics of Rec1-resilin as an IDP during the formation of the Pt-NMQCs. It has been demonstrated that the green fluorescent Pt-NMQCs exhibit a high quantum yield of ~7.0% and a lifetime of ~9.5 ns in aqueous media. The change in photoluminescence properties due to the inter-dot interactions between proximal dots and aggregation of the Pt-NMQCs by evaporation was also measured spectroscopically and discussed.-
dc.description.statementofresponsibilityRajkamal Balu, Robert Knott, Christopher M. Elvin, Anita J. Hill, Namita R. Choudhury and Naba K. Dutta-
dc.language.isoen-
dc.publisherMDPI-
dc.rights© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).-
dc.source.urihttp://dx.doi.org/10.3390/bios9040128-
dc.subjectQuantum dot; noble metal clusters; fluorescent platinum nanoclusters; biosensors; biomineralization; intrinsically disordered protein; protein polymer; small angle X-ray scattering-
dc.titleA sustainable biomineralization approach for the synthesis of highly fluorescent ultra-small pt nanoclusters-
dc.typeJournal article-
dc.identifier.doi10.3390/bios9040128-
dc.relation.granthttp://purl.org/au-research/grants/arc/Discovery-
dc.relation.granthttp://purl.org/au-research/grants/arc/DP120103537-
pubs.publication-statusPublished-
dc.identifier.orcidDutta, N.K. [0000-0003-4800-1910]-
Appears in Collections:Aurora harvest 4
Chemical Engineering publications

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