Molecular interactions and structure of a supramolecular arrangement of glucose oxidase and palladium nanoparticles.
Identifieur interne : 001272 ( Main/Exploration ); précédent : 001271; suivant : 001273Molecular interactions and structure of a supramolecular arrangement of glucose oxidase and palladium nanoparticles.
Auteurs : RBID : pubmed:21643578English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Enzymes, Immobilized, Glucose Oxidase, Palladium.
- chemistry : Nanoparticles.
- enzymology : Aspergillus niger.
- ultrastructure : Nanoparticles.
- Electrochemistry, Oxidation-Reduction, Spectroscopy, Fourier Transform Infrared.
Abstract
This paper presents studies about the molecular interactions and redox processes involved in the formation of palladium nanoparticles associated to glucose oxidase (GOx-PdNPs) in a supramolecular arrangement. The synthesis occurs in two steps, the Pd reduction and the formation of the 80 nm sized supramolecular aggregates containing multiples units of GOx associated to 3.5 nm sized PdNPs. During synthesis, GOx molecules interact with Pd salt leading to metal ion and FAD reduction probably via the thiol group of the cysteine 521 residue. For the growing of PdNPs, formic acid was necessary as a co-adjuvant reducing agent. Besides the contribution for the redox processes, GOx is also necessary for the NP stability preventing the formation of precipitates resulted from uncontrolled growing of NPs Cyclic voltammetry of the GOx-PdNPs demonstrated electroactivity of the bionanocomposite immobilized on ITO (indium-tin oxide) electrode surface and also the NP is partially blocked due to strong interaction GOx and the surface of PdNPs. Vibrational spectroscopy (FTIR) showed that significant structural changes occurred in GOx after the association to PdNP. These mechanistics and structural studies can contribute for modulation of bionanocomposites properties.
DOI: 10.1039/c1cp20432g
PubMed: 21643578
Links toward previous steps (curation, corpus...)
Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Molecular interactions and structure of a supramolecular arrangement of glucose oxidase and palladium nanoparticles.</title><author><name sortKey="Pereira, Andressa R" uniqKey="Pereira A">Andressa R Pereira</name><affiliation wicri:level="1"><nlm:affiliation>Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil.</nlm:affiliation><country xml:lang="fr">Brésil</country><wicri:regionArea>Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André</wicri:regionArea></affiliation></author><author><name sortKey="Iost, Rodrigo M" uniqKey="Iost R">Rodrigo M Iost</name></author><author><name sortKey="Martins, Marccus V A" uniqKey="Martins M">Marccus V A Martins</name></author><author><name sortKey="Yokomizo, Cesar H" uniqKey="Yokomizo C">Cesar H Yokomizo</name></author><author><name sortKey="Da Silva, Welter C" uniqKey="Da Silva W">Welter C da Silva</name></author><author><name sortKey="Nantes, Iseli L" uniqKey="Nantes I">Iseli L Nantes</name></author><author><name sortKey="Crespilho, Frank N" uniqKey="Crespilho F">Frank N Crespilho</name></author></titleStmt><publicationStmt><date when="2011">2011</date><idno type="doi">10.1039/c1cp20432g</idno><idno type="RBID">pubmed:21643578</idno><idno type="pmid">21643578</idno><idno type="wicri:Area/Main/Corpus">001349</idno><idno type="wicri:Area/Main/Curation">001349</idno><idno type="wicri:Area/Main/Exploration">001272</idno></publicationStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aspergillus niger (enzymology)</term><term>Electrochemistry</term><term>Enzymes, Immobilized (chemistry)</term><term>Glucose Oxidase (chemistry)</term><term>Nanoparticles (chemistry)</term><term>Nanoparticles (ultrastructure)</term><term>Oxidation-Reduction</term><term>Palladium (chemistry)</term><term>Spectroscopy, Fourier Transform Infrared</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Enzymes, Immobilized</term><term>Glucose Oxidase</term><term>Palladium</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Nanoparticles</term></keywords><keywords scheme="MESH" qualifier="enzymology" xml:lang="en"><term>Aspergillus niger</term></keywords><keywords scheme="MESH" qualifier="ultrastructure" xml:lang="en"><term>Nanoparticles</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Electrochemistry</term><term>Oxidation-Reduction</term><term>Spectroscopy, Fourier Transform Infrared</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This paper presents studies about the molecular interactions and redox processes involved in the formation of palladium nanoparticles associated to glucose oxidase (GOx-PdNPs) in a supramolecular arrangement. The synthesis occurs in two steps, the Pd reduction and the formation of the 80 nm sized supramolecular aggregates containing multiples units of GOx associated to 3.5 nm sized PdNPs. During synthesis, GOx molecules interact with Pd salt leading to metal ion and FAD reduction probably via the thiol group of the cysteine 521 residue. For the growing of PdNPs, formic acid was necessary as a co-adjuvant reducing agent. Besides the contribution for the redox processes, GOx is also necessary for the NP stability preventing the formation of precipitates resulted from uncontrolled growing of NPs Cyclic voltammetry of the GOx-PdNPs demonstrated electroactivity of the bionanocomposite immobilized on ITO (indium-tin oxide) electrode surface and also the NP is partially blocked due to strong interaction GOx and the surface of PdNPs. Vibrational spectroscopy (FTIR) showed that significant structural changes occurred in GOx after the association to PdNP. These mechanistics and structural studies can contribute for modulation of bionanocomposites properties.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">21643578</PMID><DateCreated><Year>2011</Year><Month>06</Month><Day>22</Day></DateCreated><DateCompleted><Year>2011</Year><Month>10</Month><Day>04</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1463-9084</ISSN><JournalIssue CitedMedium="Internet"><Volume>13</Volume><Issue>26</Issue><PubDate><Year>2011</Year><Month>Jul</Month><Day>14</Day></PubDate></JournalIssue><Title>Physical chemistry chemical physics : PCCP</Title><ISOAbbreviation>Phys Chem Chem Phys</ISOAbbreviation></Journal><ArticleTitle>Molecular interactions and structure of a supramolecular arrangement of glucose oxidase and palladium nanoparticles.</ArticleTitle><Pagination><MedlinePgn>12155-62</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1039/c1cp20432g</ELocationID><Abstract><AbstractText>This paper presents studies about the molecular interactions and redox processes involved in the formation of palladium nanoparticles associated to glucose oxidase (GOx-PdNPs) in a supramolecular arrangement. The synthesis occurs in two steps, the Pd reduction and the formation of the 80 nm sized supramolecular aggregates containing multiples units of GOx associated to 3.5 nm sized PdNPs. During synthesis, GOx molecules interact with Pd salt leading to metal ion and FAD reduction probably via the thiol group of the cysteine 521 residue. For the growing of PdNPs, formic acid was necessary as a co-adjuvant reducing agent. Besides the contribution for the redox processes, GOx is also necessary for the NP stability preventing the formation of precipitates resulted from uncontrolled growing of NPs Cyclic voltammetry of the GOx-PdNPs demonstrated electroactivity of the bionanocomposite immobilized on ITO (indium-tin oxide) electrode surface and also the NP is partially blocked due to strong interaction GOx and the surface of PdNPs. Vibrational spectroscopy (FTIR) showed that significant structural changes occurred in GOx after the association to PdNP. These mechanistics and structural studies can contribute for modulation of bionanocomposites properties.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Pereira</LastName><ForeName>Andressa R</ForeName><Initials>AR</Initials><Affiliation>Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil.</Affiliation></Author><Author ValidYN="Y"><LastName>Iost</LastName><ForeName>Rodrigo M</ForeName><Initials>RM</Initials></Author><Author ValidYN="Y"><LastName>Martins</LastName><ForeName>Marccus V A</ForeName><Initials>MV</Initials></Author><Author ValidYN="Y"><LastName>Yokomizo</LastName><ForeName>Cesar H</ForeName><Initials>CH</Initials></Author><Author ValidYN="Y"><LastName>da Silva</LastName><ForeName>Welter C</ForeName><Initials>WC</Initials></Author><Author ValidYN="Y"><LastName>Nantes</LastName><ForeName>Iseli L</ForeName><Initials>IL</Initials></Author><Author ValidYN="Y"><LastName>Crespilho</LastName><ForeName>Frank N</ForeName><Initials>FN</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType>Journal Article</PublicationType><PublicationType>Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2011</Year><Month>06</Month><Day>03</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Phys Chem Chem Phys</MedlineTA><NlmUniqueID>100888160</NlmUniqueID><ISSNLinking>1463-9076</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Enzymes, Immobilized</NameOfSubstance></Chemical><Chemical><RegistryNumber>5TWQ1V240M</RegistryNumber><NameOfSubstance>Palladium</NameOfSubstance></Chemical><Chemical><RegistryNumber>EC 1.1.3.4</RegistryNumber><NameOfSubstance>Glucose Oxidase</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N">Aspergillus niger</DescriptorName><QualifierName MajorTopicYN="Y">enzymology</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Electrochemistry</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Enzymes, Immobilized</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Glucose Oxidase</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Nanoparticles</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName><QualifierName MajorTopicYN="N">ultrastructure</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Oxidation-Reduction</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Palladium</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Spectroscopy, Fourier Transform Infrared</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="aheadofprint"><Year>2011</Year><Month>6</Month><Day>3</Day></PubMedPubDate><PubMedPubDate PubStatus="epublish"><Year>2011</Year><Month>6</Month><Day>21</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2011</Year><Month>6</Month><Day>7</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2011</Year><Month>6</Month><Day>7</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2011</Year><Month>10</Month><Day>5</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="doi">10.1039/c1cp20432g</ArticleId><ArticleId IdType="pubmed">21643578</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=IndiumV2/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 001272 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 001272 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= *** parameter Area/wikiCode missing ***
|area= IndiumV2
|flux= Main
|étape= Exploration
|type= RBID
|clé= pubmed:21643578
|texte= Molecular interactions and structure of a supramolecular arrangement of glucose oxidase and palladium nanoparticles.
}}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Main/Exploration/RBID.i -Sk "pubmed:21643578" \
| HfdSelect -Kh $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd \
| NlmPubMed2Wicri -a IndiumV2
| This area was generated with Dilib version V0.5.76. |  |