Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/121942
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dc.contributor.author | Balu, R. | - |
dc.contributor.author | Knott, R. | - |
dc.contributor.author | Elvin, C.M. | - |
dc.contributor.author | Hill, A.J. | - |
dc.contributor.author | R Choudhury, N. | - |
dc.contributor.author | Dutta, N.K. | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Biosensors, 2019; 9(4):1-13 | - |
dc.identifier.issn | 2079-6374 | - |
dc.identifier.issn | 2079-6374 | - |
dc.identifier.uri | http://hdl.handle.net/2440/121942 | - |
dc.description.abstract | Herein 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.statementofresponsibility | Rajkamal Balu, Robert Knott, Christopher M. Elvin, Anita J. Hill, Namita R. Choudhury and Naba K. Dutta | - |
dc.language.iso | en | - |
dc.publisher | MDPI | - |
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.uri | http://dx.doi.org/10.3390/bios9040128 | - |
dc.subject | Quantum dot; noble metal clusters; fluorescent platinum nanoclusters; biosensors; biomineralization; intrinsically disordered protein; protein polymer; small angle X-ray scattering | - |
dc.title | A sustainable biomineralization approach for the synthesis of highly fluorescent ultra-small pt nanoclusters | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.3390/bios9040128 | - |
dc.relation.grant | http://purl.org/au-research/grants/arc/Discovery | - |
dc.relation.grant | http://purl.org/au-research/grants/arc/DP120103537 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Dutta, N.K. [0000-0003-4800-1910] | - |
Appears in Collections: | Aurora harvest 4 Chemical Engineering publications |
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File | Description | Size | Format | |
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hdl_121942.pdf | Published version | 1.99 MB | Adobe PDF | View/Open |
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