Synthesis and electrochemistry of 6 nm ferrocenated indium-tin oxide nanoparticles.
Identifieur interne : 000352 ( Main/Exploration ); précédent : 000351; suivant : 000353Synthesis and electrochemistry of 6 nm ferrocenated indium-tin oxide nanoparticles.
Auteurs : RBID : pubmed:23267676Abstract
Indium-tin oxide (ITO) nanoparticles, 6.1 ± 0.8 nm in diameter, were synthesized using a hot injection method. After reaction with 3-aminopropyldimethylethoxysilane to replace the initial oleylamine and oleic acid capping ligands, the aminated nanoparticles were rendered electroactive by functionalization with ferrocenoyl chloride. The nanoparticle color changed from blue-green to light brown, and the nanoparticles became more soluble in polar solvents, notably acetonitrile. The nanoparticle diffusion coefficient (D = 1.0 × 10(-6) cm(2)/s) and effective ferrocene concentration (C = 0.60 mM) in acetonitrile solutions were determined using ratios of DC and D(1/2)C data measured by microdisk voltammetry and chronoamperometry. The D result compares favorably to an Einstein-Stokes estimate (2.1 × 10(-6) cm(2)/s), assuming an 8 nm hydrodynamic diameter in acetonitrile (6 nm for the ITO core plus 2 nm for the ligand shell). The ferrocene concentration result is lower than anticipated (ca. 1.60 mM) based on a potentiometric titration of the ferrocene sites with Cu(II) in acetonitrile. Cyclic voltammetric data indicate tendency of the ferrocenated nanoparticles to adsorb on the Pt working electrode.
DOI: 10.1021/la304443k
PubMed: 23267676
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Synthesis and electrochemistry of 6 nm ferrocenated indium-tin oxide nanoparticles.</title><author><name sortKey="Roberts, Joseph J P" uniqKey="Roberts J">Joseph J P Roberts</name><affiliation wicri:level="1"><nlm:affiliation>Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, United States.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599</wicri:regionArea></affiliation></author><author><name sortKey="Vuong, Kim T" uniqKey="Vuong K">Kim T Vuong</name></author><author><name sortKey="Murray, Royce W" uniqKey="Murray R">Royce W Murray</name></author></titleStmt><publicationStmt><date when="2013">2013</date><idno type="doi">10.1021/la304443k</idno><idno type="RBID">pubmed:23267676</idno><idno type="pmid">23267676</idno><idno type="wicri:Area/Main/Corpus">000876</idno><idno type="wicri:Area/Main/Curation">000876</idno><idno type="wicri:Area/Main/Exploration">000352</idno></publicationStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Indium-tin oxide (ITO) nanoparticles, 6.1 ± 0.8 nm in diameter, were synthesized using a hot injection method. After reaction with 3-aminopropyldimethylethoxysilane to replace the initial oleylamine and oleic acid capping ligands, the aminated nanoparticles were rendered electroactive by functionalization with ferrocenoyl chloride. The nanoparticle color changed from blue-green to light brown, and the nanoparticles became more soluble in polar solvents, notably acetonitrile. The nanoparticle diffusion coefficient (D = 1.0 × 10(-6) cm(2)/s) and effective ferrocene concentration (C = 0.60 mM) in acetonitrile solutions were determined using ratios of DC and D(1/2)C data measured by microdisk voltammetry and chronoamperometry. The D result compares favorably to an Einstein-Stokes estimate (2.1 × 10(-6) cm(2)/s), assuming an 8 nm hydrodynamic diameter in acetonitrile (6 nm for the ITO core plus 2 nm for the ligand shell). The ferrocene concentration result is lower than anticipated (ca. 1.60 mM) based on a potentiometric titration of the ferrocene sites with Cu(II) in acetonitrile. Cyclic voltammetric data indicate tendency of the ferrocenated nanoparticles to adsorb on the Pt working electrode.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="PubMed-not-MEDLINE"><PMID Version="1">23267676</PMID><DateCreated><Year>2013</Year><Month>01</Month><Day>08</Day></DateCreated><DateCompleted><Year>2013</Year><Month>06</Month><Day>14</Day></DateCompleted><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1520-5827</ISSN><JournalIssue CitedMedium="Internet"><Volume>29</Volume><Issue>1</Issue><PubDate><Year>2013</Year><Month>Jan</Month><Day>8</Day></PubDate></JournalIssue><Title>Langmuir : the ACS journal of surfaces and colloids</Title><ISOAbbreviation>Langmuir</ISOAbbreviation></Journal><ArticleTitle>Synthesis and electrochemistry of 6 nm ferrocenated indium-tin oxide nanoparticles.</ArticleTitle><Pagination><MedlinePgn>474-9</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1021/la304443k</ELocationID><Abstract><AbstractText>Indium-tin oxide (ITO) nanoparticles, 6.1 ± 0.8 nm in diameter, were synthesized using a hot injection method. After reaction with 3-aminopropyldimethylethoxysilane to replace the initial oleylamine and oleic acid capping ligands, the aminated nanoparticles were rendered electroactive by functionalization with ferrocenoyl chloride. The nanoparticle color changed from blue-green to light brown, and the nanoparticles became more soluble in polar solvents, notably acetonitrile. The nanoparticle diffusion coefficient (D = 1.0 × 10(-6) cm(2)/s) and effective ferrocene concentration (C = 0.60 mM) in acetonitrile solutions were determined using ratios of DC and D(1/2)C data measured by microdisk voltammetry and chronoamperometry. The D result compares favorably to an Einstein-Stokes estimate (2.1 × 10(-6) cm(2)/s), assuming an 8 nm hydrodynamic diameter in acetonitrile (6 nm for the ITO core plus 2 nm for the ligand shell). The ferrocene concentration result is lower than anticipated (ca. 1.60 mM) based on a potentiometric titration of the ferrocene sites with Cu(II) in acetonitrile. Cyclic voltammetric data indicate tendency of the ferrocenated nanoparticles to adsorb on the Pt working electrode.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Roberts</LastName><ForeName>Joseph J P</ForeName><Initials>JJ</Initials><Affiliation>Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, United States.</Affiliation></Author><Author ValidYN="Y"><LastName>Vuong</LastName><ForeName>Kim T</ForeName><Initials>KT</Initials></Author><Author ValidYN="Y"><LastName>Murray</LastName><ForeName>Royce W</ForeName><Initials>RW</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType>Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2012</Year><Month>12</Month><Day>26</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Langmuir</MedlineTA><NlmUniqueID>9882736</NlmUniqueID><ISSNLinking>0743-7463</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="aheadofprint"><Year>2012</Year><Month>12</Month><Day>26</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2012</Year><Month>12</Month><Day>27</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2012</Year><Month>12</Month><Day>27</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2012</Year><Month>12</Month><Day>27</Day><Hour>6</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="doi">10.1021/la304443k</ArticleId><ArticleId IdType="pubmed">23267676</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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