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Chiral CdSe nanoplatelets as an ultrasensitive probe for lead ion sensing

dc.contributor.authorWANG, Xiongbin
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorHAO, Junjie
hal.structure.identifierCollege of Physics and Energy
hal.structure.identifierSchool of Materials Science and Engineering
dc.contributor.authorCHENG, Jiaji
hal.structure.identifierCollege of Physics and Energy
dc.contributor.authorLI, Junzi
hal.structure.identifierThe Institute of Applied Physics and Materials Engineering
hal.structure.identifierDepartment of Materials Science and Engineering
dc.contributor.authorMIAO, Jun
dc.contributor.authorLI, Ruxue
hal.structure.identifierThe Institute of Applied Physics and Materials Engineering
dc.contributor.authorLI, Yiwen
hal.structure.identifierSchool of Science and Engineering
dc.contributor.authorLI, Jiagen
dc.contributor.authorLIU, Yuhui
hal.structure.identifierSchool of Science and Engineering
dc.contributor.authorZHU, Xi
dc.contributor.authorLIU, Yanjun
dc.contributor.authorSUN, Xiao Wei
hal.structure.identifierThe Institute of Applied Physics and Materials Engineering
dc.contributor.authorTANG, Zikang
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDELVILLE, Marie-Hélène
hal.structure.identifierCollege of Physics and Energy
dc.contributor.authorHE, Tingchao
dc.contributor.authorCHEN, Rui
dc.date.issued2019
dc.identifier.issn2040-3364
dc.description.abstractEnAs opposed to traditional photoluminescence and ultra-violet based optical sensing, we present here a sensing system based on resolved optically active polarization with promising applications. It is based on the ultrathin CdSe nanoplatelets (NPLs) when modified with either L or D-cysteine molecules (L/D-cys) as bio-to-nano ligands. The chiral ligand transfers its chiroptical activity to the achiral nanoplatelets with an anisotropy factor of ∼10−4, which unlocks the chiral excitonic transitions and allows lead ion detection with a limit of detection (LOD) as low as 4.9 nM. Simulations and modelling based on time-dependent density functional theory (TD-DFT) reveal the chiral mechanism of L/D-cys capped CdSe NPLs. The presented CD-based sensing system illustrates an alternative possibility of using chiral CdSe NPLs as competitive chiral sensors for heavy metal ion detection.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.title.enChiral CdSe nanoplatelets as an ultrasensitive probe for lead ion sensing
dc.typeArticle de revue
dc.identifier.doi10.1039/c8nr10506e
dc.subject.halChimie/Chimie analytique
dc.subject.halChimie/Matériaux
bordeaux.journalNanoscale
bordeaux.page9327-9334
bordeaux.volume11
bordeaux.issue19
bordeaux.peerReviewedoui
hal.identifierhal-02138867
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02138867v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Nanoscale&rft.date=2019&rft.volume=11&rft.issue=19&rft.spage=9327-9334&rft.epage=9327-9334&rft.eissn=2040-3364&rft.issn=2040-3364&rft.au=WANG,%20Xiongbin&HAO,%20Junjie&CHENG,%20Jiaji&LI,%20Junzi&MIAO,%20Jun&rft.genre=article


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