Electric field directed layer-by-layer assembly of highly fluorescent CdTe nanoparticles.
Identifieur interne : 003796 ( Main/Exploration ); précédent : 003795; suivant : 003797Electric field directed layer-by-layer assembly of highly fluorescent CdTe nanoparticles.
Auteurs : RBID : pubmed:12914042English descriptors
- KwdEn :
- Ammonium Chloride, Cadmium Compounds (chemical synthesis), Cadmium Compounds (chemistry), Cadmium Compounds (isolation & purification), Electrochemistry (instrumentation), Electrochemistry (methods), Electrodes, Electromagnetic Fields, Electrophoresis (methods), Equipment Design, Fluorescence, Materials Testing, Nanotechnology (instrumentation), Nanotechnology (methods), Particle Size, Photochemistry (instrumentation), Photochemistry (methods), Polyethylenes (chemistry), Quaternary Ammonium Compounds (chemistry), Tellurium (chemistry), Tellurium (isolation & purification), Tin Compounds (chemistry).
- MESH :
- chemical , chemical synthesis : Cadmium Compounds.
- chemical , chemistry : Cadmium Compounds, Polyethylenes, Quaternary Ammonium Compounds, Tellurium, Tin Compounds.
- chemical , isolation & purification : Cadmium Compounds, Tellurium.
- chemical : Ammonium Chloride.
- instrumentation : Electrochemistry, Nanotechnology, Photochemistry.
- methods : Electrochemistry, Electrophoresis, Nanotechnology, Photochemistry.
- Electrodes, Electromagnetic Fields, Equipment Design, Fluorescence, Materials Testing, Particle Size.
Abstract
An electric field directed layer-by-layer assembly technique has been developed by combining electrophoretic deposition and the layer-by-layer self-assembly method. This technique is employed to realize spatially selective deposition of CdTe nanoparticles on electrodes of indium-tin oxide (ITO). The fluorescence measurements prove that the selectivity of the film deposition increases against applied voltage and reaches 99% when the voltage is 1.4 V. Upon further increase of the voltage, the selectivity slightly decreases. This decrease occurs because high voltage leads to a degradation of CdTe particles and thus reduces fluorescence intensity of the resultant CdTe film. However, fluorescence investigation indicates that a spacer layer of polyelectrolyte complex between the ITO electrode and the CdTe film is useful to protect the CdTe from being destroyed under high voltages.
PubMed: 12914042
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Electric field directed layer-by-layer assembly of highly fluorescent CdTe nanoparticles.</title><author><name sortKey="Sun, J" uniqKey="Sun J">J Sun</name><affiliation wicri:level="3"><nlm:affiliation>Department of Physics, Center of Nanoscience, University of Munich, Amalienstrasse 54, D-80799 Munich, Germany.</nlm:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Department of Physics, Center of Nanoscience, University of Munich, Amalienstrasse 54, D-80799 Munich</wicri:regionArea><placeName><region type="land" nuts="1">Bavière</region><region type="district" nuts="2">District de Haute-Bavière</region><settlement type="city">Munich</settlement></placeName></affiliation></author><author><name sortKey="Gao, M" uniqKey="Gao M">M Gao</name></author><author><name sortKey="Feldmann, J" uniqKey="Feldmann J">J Feldmann</name></author></titleStmt><publicationStmt><date when="2001">2001</date><idno type="RBID">pubmed:12914042</idno><idno type="pmid">12914042</idno><idno type="wicri:Area/Main/Corpus">003428</idno><idno type="wicri:Area/Main/Curation">003428</idno><idno type="wicri:Area/Main/Exploration">003796</idno></publicationStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Ammonium Chloride</term><term>Cadmium Compounds (chemical synthesis)</term><term>Cadmium Compounds (chemistry)</term><term>Cadmium Compounds (isolation & purification)</term><term>Electrochemistry (instrumentation)</term><term>Electrochemistry (methods)</term><term>Electrodes</term><term>Electromagnetic Fields</term><term>Electrophoresis (methods)</term><term>Equipment Design</term><term>Fluorescence</term><term>Materials Testing</term><term>Nanotechnology (instrumentation)</term><term>Nanotechnology (methods)</term><term>Particle Size</term><term>Photochemistry (instrumentation)</term><term>Photochemistry (methods)</term><term>Polyethylenes (chemistry)</term><term>Quaternary Ammonium Compounds (chemistry)</term><term>Tellurium (chemistry)</term><term>Tellurium (isolation & purification)</term><term>Tin Compounds (chemistry)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemical synthesis" xml:lang="en"><term>Cadmium Compounds</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Cadmium Compounds</term><term>Polyethylenes</term><term>Quaternary Ammonium Compounds</term><term>Tellurium</term><term>Tin Compounds</term></keywords><keywords scheme="MESH" type="chemical" qualifier="isolation & purification" xml:lang="en"><term>Cadmium Compounds</term><term>Tellurium</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Ammonium Chloride</term></keywords><keywords scheme="MESH" qualifier="instrumentation" xml:lang="en"><term>Electrochemistry</term><term>Nanotechnology</term><term>Photochemistry</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Electrochemistry</term><term>Electrophoresis</term><term>Nanotechnology</term><term>Photochemistry</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Electrodes</term><term>Electromagnetic Fields</term><term>Equipment Design</term><term>Fluorescence</term><term>Materials Testing</term><term>Particle Size</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">An electric field directed layer-by-layer assembly technique has been developed by combining electrophoretic deposition and the layer-by-layer self-assembly method. This technique is employed to realize spatially selective deposition of CdTe nanoparticles on electrodes of indium-tin oxide (ITO). The fluorescence measurements prove that the selectivity of the film deposition increases against applied voltage and reaches 99% when the voltage is 1.4 V. Upon further increase of the voltage, the selectivity slightly decreases. This decrease occurs because high voltage leads to a degradation of CdTe particles and thus reduces fluorescence intensity of the resultant CdTe film. However, fluorescence investigation indicates that a spacer layer of polyelectrolyte complex between the ITO electrode and the CdTe film is useful to protect the CdTe from being destroyed under high voltages.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">12914042</PMID><DateCreated><Year>2003</Year><Month>08</Month><Day>13</Day></DateCreated><DateCompleted><Year>2003</Year><Month>09</Month><Day>16</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">1533-4880</ISSN><JournalIssue CitedMedium="Print"><Volume>1</Volume><Issue>2</Issue><PubDate><Year>2001</Year><Month>Jun</Month></PubDate></JournalIssue><Title>Journal of nanoscience and nanotechnology</Title><ISOAbbreviation>J Nanosci Nanotechnol</ISOAbbreviation></Journal><ArticleTitle>Electric field directed layer-by-layer assembly of highly fluorescent CdTe nanoparticles.</ArticleTitle><Pagination><MedlinePgn>133-6</MedlinePgn></Pagination><Abstract><AbstractText>An electric field directed layer-by-layer assembly technique has been developed by combining electrophoretic deposition and the layer-by-layer self-assembly method. This technique is employed to realize spatially selective deposition of CdTe nanoparticles on electrodes of indium-tin oxide (ITO). The fluorescence measurements prove that the selectivity of the film deposition increases against applied voltage and reaches 99% when the voltage is 1.4 V. Upon further increase of the voltage, the selectivity slightly decreases. This decrease occurs because high voltage leads to a degradation of CdTe particles and thus reduces fluorescence intensity of the resultant CdTe film. However, fluorescence investigation indicates that a spacer layer of polyelectrolyte complex between the ITO electrode and the CdTe film is useful to protect the CdTe from being destroyed under high voltages.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Sun</LastName><ForeName>J</ForeName><Initials>J</Initials><Affiliation>Department of Physics, Center of Nanoscience, University of Munich, Amalienstrasse 54, D-80799 Munich, Germany.</Affiliation></Author><Author ValidYN="Y"><LastName>Gao</LastName><ForeName>M</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Feldmann</LastName><ForeName>J</ForeName><Initials>J</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType>Journal Article</PublicationType><PublicationType>Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>J Nanosci Nanotechnol</MedlineTA><NlmUniqueID>101088195</NlmUniqueID><ISSNLinking>1533-4880</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Cadmium Compounds</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Polyethylenes</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Quaternary Ammonium Compounds</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Tin Compounds</NameOfSubstance></Chemical><Chemical><RegistryNumber>01Q9PC255D</RegistryNumber><NameOfSubstance>Ammonium Chloride</NameOfSubstance></Chemical><Chemical><RegistryNumber>1306-25-8</RegistryNumber><NameOfSubstance>cadmium telluride</NameOfSubstance></Chemical><Chemical><RegistryNumber>26062-79-3</RegistryNumber><NameOfSubstance>poly-N,N-dimethyl-N,N-diallylammonium chloride</NameOfSubstance></Chemical><Chemical><RegistryNumber>71243-84-0</RegistryNumber><NameOfSubstance>indium tin oxide</NameOfSubstance></Chemical><Chemical><RegistryNumber>NQA0O090ZJ</RegistryNumber><NameOfSubstance>Tellurium</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N">Ammonium Chloride</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Cadmium Compounds</DescriptorName><QualifierName MajorTopicYN="Y">chemical synthesis</QualifierName><QualifierName MajorTopicYN="N">chemistry</QualifierName><QualifierName MajorTopicYN="N">isolation & purification</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Electrochemistry</DescriptorName><QualifierName MajorTopicYN="N">instrumentation</QualifierName><QualifierName MajorTopicYN="Y">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y">Electrodes</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Electromagnetic Fields</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Electrophoresis</DescriptorName><QualifierName MajorTopicYN="Y">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Equipment Design</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Fluorescence</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Materials Testing</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Nanotechnology</DescriptorName><QualifierName MajorTopicYN="Y">instrumentation</QualifierName><QualifierName MajorTopicYN="N">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Particle Size</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Photochemistry</DescriptorName><QualifierName MajorTopicYN="N">instrumentation</QualifierName><QualifierName MajorTopicYN="N">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Polyethylenes</DescriptorName><QualifierName MajorTopicYN="N">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Quaternary Ammonium Compounds</DescriptorName><QualifierName MajorTopicYN="N">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Tellurium</DescriptorName><QualifierName MajorTopicYN="N">chemistry</QualifierName><QualifierName MajorTopicYN="N">isolation & purification</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Tin Compounds</DescriptorName><QualifierName MajorTopicYN="N">chemistry</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2003</Year><Month>8</Month><Day>14</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2003</Year><Month>9</Month><Day>17</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2003</Year><Month>8</Month><Day>14</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">12914042</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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