Incidence of the core composition on the stability, the ROS production and the toxicity of CdSe quantum dots.
Identifieur interne : 000041 ( PubMed/Curation ); précédent : 000040; suivant : 000042Incidence of the core composition on the stability, the ROS production and the toxicity of CdSe quantum dots.
Auteurs : Florence-Anaïs Kauffer [France] ; Christophe Merlin [France] ; Lavinia Balan [France] ; Raphaël Schneider [France]Source :
- Journal of hazardous materials [ 1873-3336 ] ; 2014.
Descripteurs français
- KwdFr :
- Alliages, Boîtes quantiques, Composés du cadmium (), Composés du cadmium (effets des radiations), Composés du cadmium (synthèse chimique), Composés du cadmium (toxicité), Composés du sélénium (), Composés du sélénium (effets des radiations), Composés du sélénium (synthèse chimique), Composés du sélénium (toxicité), Diffraction des rayons X, Escherichia coli (), Escherichia coli (croissance et développement), Escherichia coli (métabolisme), Espèces réactives de l'oxygène (), Microscopie électronique à transmission, Photochimie, Propriétés de surface, Solubilité, Stress oxydatif (), Taille de particule, Thiomalates ().
- MESH :
- croissance et développement : Escherichia coli.
- effets des radiations : Composés du cadmium, Composés du sélénium.
- métabolisme : Escherichia coli.
- synthèse chimique : Composés du cadmium, Composés du sélénium.
- toxicité : Composés du cadmium, Composés du sélénium.
- Alliages, Boîtes quantiques, Composés du cadmium, Composés du sélénium, Diffraction des rayons X, Escherichia coli, Espèces réactives de l'oxygène, Microscopie électronique à transmission, Photochimie, Propriétés de surface, Solubilité, Stress oxydatif, Taille de particule, Thiomalates.
English descriptors
- KwdEn :
- Alloys, Cadmium Compounds (chemical synthesis), Cadmium Compounds (chemistry), Cadmium Compounds (radiation effects), Cadmium Compounds (toxicity), Escherichia coli (drug effects), Escherichia coli (growth & development), Escherichia coli (metabolism), Microscopy, Electron, Transmission, Oxidative Stress (drug effects), Particle Size, Photochemistry, Quantum Dots, Reactive Oxygen Species (chemistry), Selenium Compounds (chemical synthesis), Selenium Compounds (chemistry), Selenium Compounds (radiation effects), Selenium Compounds (toxicity), Solubility, Surface Properties, Thiomalates (chemistry), X-Ray Diffraction.
- MESH :
- chemical , chemical synthesis : Cadmium Compounds, Selenium Compounds.
- chemical , chemistry : Cadmium Compounds, Reactive Oxygen Species, Selenium Compounds, Thiomalates.
- chemical , radiation effects : Cadmium Compounds, Selenium Compounds.
- chemical , toxicity : Cadmium Compounds, Selenium Compounds.
- chemical : Alloys.
- drug effects : Escherichia coli, Oxidative Stress.
- growth & development : Escherichia coli.
- metabolism : Escherichia coli.
- Microscopy, Electron, Transmission, Particle Size, Photochemistry, Quantum Dots, Solubility, Surface Properties, X-Ray Diffraction.
Abstract
Mercaptosuccinic acid-capped CdSe and alloyed CdSe(S) QDs were prepared in aqueous solution at 100 and 170°C, respectively. These dots were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and UV-vis and photoluminescence spectroscopies. The dots were found to be of similar size (ca. 2nm) but differ in their composition and surface chemistry. The photostability of the QDs was found to correlate with their ability to produce reactive oxygen species (ROS) upon light activation. CdSe QDs produce hydroxyl radicals immediately after irradiation due to their modest photostability, while CdSe(S) QDs start to generate the hydroxyl radicals only once they start to be bleached (ca. 30min). Cytotoxicity experiments conducted on Escherichia coli cells revealed that CdSe QDs were the more toxic despite being the least loaded in cadmium. In addition, consistent with ROS assays, the cytotoxicity of the CdSe QDs appeared light-dependent and is in accordance with a light-dependent oxidative stress observed with an oxyR-based whole cell biosensor. Our results demonstrate the crucial role played by nanoparticles synthesis process on their PL properties, their stability and their toxicity.
DOI: 10.1016/j.jhazmat.2014.01.029
PubMed: 24509095
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sélénium</term></keywords><keywords scheme="MESH" qualifier="toxicité" xml:lang="fr"><term>Composés du cadmium</term><term>Composés du sélénium</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Microscopy, Electron, Transmission</term><term>Particle Size</term><term>Photochemistry</term><term>Quantum Dots</term><term>Solubility</term><term>Surface Properties</term><term>X-Ray Diffraction</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Alliages</term><term>Boîtes quantiques</term><term>Composés du cadmium</term><term>Composés du sélénium</term><term>Diffraction des rayons X</term><term>Escherichia coli</term><term>Espèces réactives de l'oxygène</term><term>Microscopie électronique à transmission</term><term>Photochimie</term><term>Propriétés de surface</term><term>Solubilité</term><term>Stress oxydatif</term><term>Taille de particule</term><term>Thiomalates</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Mercaptosuccinic acid-capped CdSe and alloyed CdSe(S) QDs were prepared in aqueous solution at 100 and 170°C, respectively. These dots were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and UV-vis and photoluminescence spectroscopies. The dots were found to be of similar size (ca. 2nm) but differ in their composition and surface chemistry. The photostability of the QDs was found to correlate with their ability to produce reactive oxygen species (ROS) upon light activation. CdSe QDs produce hydroxyl radicals immediately after irradiation due to their modest photostability, while CdSe(S) QDs start to generate the hydroxyl radicals only once they start to be bleached (ca. 30min). Cytotoxicity experiments conducted on Escherichia coli cells revealed that CdSe QDs were the more toxic despite being the least loaded in cadmium. In addition, consistent with ROS assays, the cytotoxicity of the CdSe QDs appeared light-dependent and is in accordance with a light-dependent oxidative stress observed with an oxyR-based whole cell biosensor. Our results demonstrate the crucial role played by nanoparticles synthesis process on their PL properties, their stability and their toxicity.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">24509095</PMID><DateCreated><Year>2014</Year><Month>02</Month><Day>24</Day></DateCreated><DateCompleted><Year>2014</Year><Month>10</Month><Day>20</Day></DateCompleted><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1873-3336</ISSN><JournalIssue CitedMedium="Internet"><Volume>268</Volume><PubDate><Year>2014</Year><Month>Mar</Month><Day>15</Day></PubDate></JournalIssue><Title>Journal of hazardous materials</Title><ISOAbbreviation>J. Hazard. Mater.</ISOAbbreviation></Journal><ArticleTitle>Incidence of the core composition on the stability, the ROS production and the toxicity of CdSe quantum dots.</ArticleTitle><Pagination><MedlinePgn>246-55</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.jhazmat.2014.01.029</ELocationID><ELocationID EIdType="pii" ValidYN="Y">S0304-3894(14)00043-0</ELocationID><Abstract><AbstractText>Mercaptosuccinic acid-capped CdSe and alloyed CdSe(S) QDs were prepared in aqueous solution at 100 and 170°C, respectively. These dots were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and UV-vis and photoluminescence spectroscopies. The dots were found to be of similar size (ca. 2nm) but differ in their composition and surface chemistry. The photostability of the QDs was found to correlate with their ability to produce reactive oxygen species (ROS) upon light activation. CdSe QDs produce hydroxyl radicals immediately after irradiation due to their modest photostability, while CdSe(S) QDs start to generate the hydroxyl radicals only once they start to be bleached (ca. 30min). Cytotoxicity experiments conducted on Escherichia coli cells revealed that CdSe QDs were the more toxic despite being the least loaded in cadmium. In addition, consistent with ROS assays, the cytotoxicity of the CdSe QDs appeared light-dependent and is in accordance with a light-dependent oxidative stress observed with an oxyR-based whole cell biosensor. Our results demonstrate the crucial role played by nanoparticles synthesis process on their PL properties, their stability and their toxicity.</AbstractText><CopyrightInformation>Copyright © 2014 Elsevier B.V. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Kauffer</LastName><ForeName>Florence-Anaïs</ForeName><Initials>FA</Initials><AffiliationInfo><Affiliation>Université de Lorraine, Laboratoire Réactions et Génie des Procédés (LRGP), UMR 7274, CNRS, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France; Université de Lorraine, Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR 7564, CNRS, 15 Avenue du Charmois, 54500 Vandoeuvre-lès-Nancy, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Merlin</LastName><ForeName>Christophe</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>Université de Lorraine, Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR 7564, CNRS, 15 Avenue du Charmois, 54500 Vandoeuvre-lès-Nancy, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Balan</LastName><ForeName>Lavinia</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>Institut de Science des Matériaux de Mulhouse (IS2M), LRC 7228, 15 rue Jean Starcky, 68093 Mulhouse, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Schneider</LastName><ForeName>Raphaël</ForeName><Initials>R</Initials><AffiliationInfo><Affiliation>Université de Lorraine, Laboratoire Réactions et Génie des Procédés (LRGP), UMR 7274, CNRS, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France. Electronic address: raphael.schneider@univ-lorraine.fr.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2014</Year><Month>01</Month><Day>24</Day></ArticleDate></Article><MedlineJournalInfo><Country>Netherlands</Country><MedlineTA>J Hazard Mater</MedlineTA><NlmUniqueID>9422688</NlmUniqueID><ISSNLinking>0304-3894</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D000497">Alloys</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D019187">Cadmium Compounds</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D017382">Reactive Oxygen 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UI="D045663">Quantum Dots</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D017382">Reactive Oxygen Species</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000737">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D018036">Selenium Compounds</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000138">chemical synthesis</QualifierName><QualifierName MajorTopicYN="N" UI="Q000737">chemistry</QualifierName><QualifierName MajorTopicYN="N" UI="Q000528">radiation effects</QualifierName><QualifierName MajorTopicYN="Y" UI="Q000633">toxicity</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D012995">Solubility</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D013499">Surface Properties</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D013870">Thiomalates</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000737">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D014961">X-Ray Diffraction</DescriptorName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Aqueous synthesis</Keyword><Keyword MajorTopicYN="N">CdSe quantum dots</Keyword><Keyword MajorTopicYN="N">Cytotoxicity</Keyword><Keyword MajorTopicYN="N">Photostability</Keyword><Keyword MajorTopicYN="N">Reactive oxygen species</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2013</Year><Month>10</Month><Day>20</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2013</Year><Month>12</Month><Day>5</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2014</Year><Month>1</Month><Day>5</Day></PubMedPubDate><PubMedPubDate PubStatus="aheadofprint"><Year>2014</Year><Month>1</Month><Day>24</Day></PubMedPubDate><PubMedPubDate 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