Fluorescence sensing of cyanide anions based on Au-modified upconversion nanoassemblies

dc.contributor.authorSun, Chunning
dc.contributor.authorGradzielski, Michael
dc.date.accessioned2021-11-20T06:12:37Z
dc.date.available2021-11-20T06:12:37Z
dc.date.issued2021-02-01
dc.description.abstractCyanides have been recognized as one of the most toxic chemicals and are harmful to the environment and human beings. Herein, fluorescence resonance energy transfer (FRET)-based upconversion nanoprobes for cyanide anions have been designed and prepared by assembling Au nanoparticles (NPs) on core–shell-structured NaYF4:Yb,Er@NaYF4:Yb upconversion NPs (csUCNPs), where csUCNPs act as the energy donor and Au NPs act as the energy acceptor. The Au content was optimized in order to have a large quenching efficiency in upconversion luminescence (UCL). The cyanide-mediated redox reaction leads to the consumption of Au NPs, resulting in UCL recovery by the inhibition of the FRET process. On the basis of these features, csUCNP/Au nanoassemblies can serve as sensitive nanoprobes for cyanide ions with a detection limit of 1.53 μM. Moreover, no significant UCL variation was observed upon the addition of other interfering ions, showing the excellent selectivity of nanoprobes toward cyanide ion sensing. The easy preparation of such upconversion-based nanoprobes provides a promising platform for sensitive and selective sensing of other hazardous species.en
dc.description.sponsorshipTU Berlin, Open-Access-Mittel - 2021en
dc.identifier.eissn1364-5528
dc.identifier.issn0003-2654
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/13919
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-12693
dc.language.isoen
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/en
dc.subject.ddc540 Chemie und zugeordnete Wissenschaftenen
dc.subject.otherfluorescence resonance energy transferen
dc.subject.otherFRETen
dc.subject.othercyanide ionsen
dc.subject.otherAuen
dc.subject.othernanoparticlesen
dc.titleFluorescence sensing of cyanide anions based on Au-modified upconversion nanoassembliesen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.doi10.1039/D0AN01954B
dcterms.bibliographicCitation.issue7
dcterms.bibliographicCitation.journaltitleAnalysten
dcterms.bibliographicCitation.originalpublishernameRoyal Society of Chemistry (RSC)en
dcterms.bibliographicCitation.originalpublisherplaceCambridgeen
dcterms.bibliographicCitation.pageend2159
dcterms.bibliographicCitation.pagestart2152
dcterms.bibliographicCitation.volume146
tub.accessrights.dnbfreeen
tub.affiliationFak. 2 Mathematik und Naturwissenschaften::Inst. Chemie::FG Physikalische Chemie / Molekulare Materialwissenschaftende
tub.affiliation.facultyFak. 2 Mathematik und Naturwissenschaftende
tub.affiliation.groupFG Physikalische Chemie / Molekulare Materialwissenschaftende
tub.affiliation.instituteInst. Chemiede
tub.publisher.universityorinstitutionTechnische Universität Berlinen

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