Size controlled synthesis of carbon quantum dots using hydride reducing agents

Show simple item record Linehan, Keith Doyle, Hugh 2016-05-06T08:16:00Z 2016-05-06T08:16:00Z 2014-06-04
dc.identifier.citation LINEHAN, K. & DOYLE, H. 2014. Size controlled synthesis of carbon quantum dots using hydride reducing agents. Journal of Materials Chemistry C, 2, pp. 6025-6031. doi:10.1039/C4TC00826J en
dc.identifier.volume 2 en
dc.identifier.startpage 6025 en
dc.identifier.endpage 6031 en
dc.identifier.issn 2050-7526
dc.identifier.doi 10.1039/c4tc00826j
dc.description.abstract Highly luminescent carbon quantum dots (CQDs) are synthesized at room temperature by hydride reduction of carbon tetrachloride (CCl4) within inverse micelles. Regulation of the average diameter of the allylamine terminated CQDs is achieved by varying the strength of the reducing agent used. Transmission electron microscopy shows that the NCs are highly crystalline with well-defined core diameters tuned from 2 to 6 nm, while FTIR and XPS spectroscopy confirm that the CQDs possess similar surface chemistry. UV-Vis and PL spectroscopy show significant quantum confinement effects, with moderate absorption in the UV spectral range, and a strong, narrow luminescence in the visible with a marked dependency on excitation wavelength. Time resolved photoluminescence measurements showed lifetimes for all CQDs in the ns range, while a maximum PL quantum yield of 27% is observed for the CQDs. en
dc.description.sponsorship European Commission (FP7 Projects: SNAPSUN, grant agreement no. 246310; CommonSense, grant agreement no. 261809); Higher Education Authority (PRTLI program: Cycle 3 “Nanoscience”; Cycle 4 “INSPIRE”) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher The Royal Society of Chemistry
dc.rights © 2014, the Authors. en
dc.subject Nanocrystals en
dc.subject Nanodots en
dc.subject Graphite en
dc.subject Yields en
dc.title Size controlled synthesis of carbon quantum dots using hydride reducing agents en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Hugh Doyle, Micro-Nanoelectronics Centre, Tyndall National Institute, Cork, Ireland. +353-21-490-4310 Email: en
dc.internal.availability Full text available en 2016-04-10T17:51:52Z
dc.description.version Accepted Version en
dc.internal.rssid 271355815
dc.internal.wokid 000339471100006
dc.contributor.funder Higher Education Authority en
dc.contributor.funder European Commission
dc.description.status Peer reviewed en
dc.identifier.journaltitle Journal of Materials Chemistry C en
dc.internal.copyrightchecked Yes. !!CORA!! AV permitted by the publisher: "Accepted manuscripts may be distributed via repositories after an embargo period of 12 months". Must include link to RSC version of record. en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress en

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