Characterization of carbon dots covered with polyvinylpyrrolidone and polyethylene glycol

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dc.contributor.authorKudr, Jiřícs
dc.contributor.authorRichtera, Lukášcs
dc.contributor.authorNejdl, Lukášcs
dc.contributor.authorBlažková, Ivacs
dc.contributor.authorMilosavljević, Vedrancs
dc.contributor.authorMoravec, Zdeněkcs
dc.contributor.authorWawrzak, Dorotacs
dc.contributor.authorKopel, Pavelcs
dc.contributor.authorRuttkay-Nedecký, Branislavcs
dc.contributor.authorAdam, Vojtěchcs
dc.contributor.authorKizek, Renécs
dc.coverage.issue10cs
dc.coverage.volume10cs
dc.date.issued2015-10-01cs
dc.description.abstractLuminescent carbon dots are new type of nanomaterial with possible applications in labelling and imaging due to their optoelectronic properties and their superior biocompatibility. The aim of this study was to synthetize two types of C-dots with different polymeric surface modification and to characterize them. Thermal method was used to prepare C-dots with surface stabilization with polyvinylpyrrolidone and polyethylene glycol. Several optical and electrochemical methods were used to characterize the particles. It was found that C-dots-PEG (3 ± 2 nm) possess stronger emission than C-dots-PVP (9 ± 3 nm) within the whole range of excitation wavelengths from 230 to 390 nm. Nevertheless in both cases the portion of C-dots created fluorescent micro-sized particles. Electrochemical impedance spectroscopy revealed that the electrode modified with both types of C-dots significantly increased resistance of bare glassy carbon electrode (C-dots-PVP 34-times and C-dots-PEG 141-times). In addition, it was found that pure polymers and C-dots also exhibit complex concentration dependent behaviour in Brdicka solution measured using hanging mercury drop electrode, whereas low amount added resulted in Co(II) peak (-1.3 V) shift and further resulted in three unresolved peak evolution between -0.5 and -0.9 V.en
dc.formattextcs
dc.format.extent8243-8254cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationINTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE. 2015, vol. 10, issue 10, p. 8243-8254.en
dc.identifier.issn1452-3981cs
dc.identifier.orcid0000-0002-8288-3999cs
dc.identifier.orcid0000-0001-6332-8917cs
dc.identifier.orcid0000-0003-4122-0694cs
dc.identifier.orcid0000-0003-4216-9544cs
dc.identifier.orcid0000-0002-8527-286Xcs
dc.identifier.other123365cs
dc.identifier.researcheridN-9991-2014cs
dc.identifier.researcheridP-3551-2018cs
dc.identifier.researcheridE-5711-2012cs
dc.identifier.researcheridD-7686-2012cs
dc.identifier.scopus12040049600cs
dc.identifier.scopus56115133500cs
dc.identifier.scopus6603604023cs
dc.identifier.urihttp://hdl.handle.net/11012/201458
dc.language.isoencs
dc.publisherESGcs
dc.relation.ispartofINTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCEcs
dc.relation.urihttp://www.electrochemsci.org/papers/vol10/101008243.pdfcs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1452-3981/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectBrdicka reactionen
dc.subjectcarbon dotsen
dc.subjectnanoparticlesen
dc.subjectvoltammetryen
dc.subjectglassy carbon electrodeen
dc.titleCharacterization of carbon dots covered with polyvinylpyrrolidone and polyethylene glycolen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-123365en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:50:09en
sync.item.modts2025.01.17 16:49:14en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Chytré nanonástrojecs
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