Liquid Crystallinity and Dimensions of Surfactant-Stabilized Sheets of Reduced Graphene Oxide.
Identifieur interne : 003B69 ( PubMed/Corpus ); précédent : 003B68; suivant : 003B70Liquid Crystallinity and Dimensions of Surfactant-Stabilized Sheets of Reduced Graphene Oxide.
Auteurs : Camilo Zamora-Ledezma ; Nicolas Puech ; Cécile Zakri ; Eric Grelet ; Simon E. Moulton ; Gordon G. Wallace ; Sanjeev Gambhir ; Christophe Blanc ; Eric Anglaret ; Philippe PoulinSource :
- The journal of physical chemistry letters [ 1948-7185 ] ; 2012.
Abstract
Graphene oxide (GO) flakes dissolved in water can spontaneously form liquid crystals. Liquid crystallinity presents an opportunity to process graphene materials into macroscopic assemblies with long-range ordering, but most graphene electronic functionalities are lost in oxidation treatments. Reduction of GO allows recovering functionalities and makes reduced graphene oxide (RGO) of greater interest. Unfortunately, chemical reduction of GO generally results in the aggregation of the flakes, with no liquid crystallinity observed. We report in the present work liquid crystals made of RGO. The addition of surfactants in appropriate conditions is used to stabilize the RGO flakes against aggregation maintaining their ability to form water-based liquid crystals. Structural and thermodynamical studies allow the dimensions of the flakes to be deduced. It is found that the thickness and diameter of RGO flakes are close to that of neat GO flakes.
DOI: 10.1021/jz3008479
PubMed: 26292127
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Moulton</name><affiliation><nlm:affiliation>§ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, New South Wales, Australia.</nlm:affiliation></affiliation></author><author><name sortKey="Wallace, Gordon G" sort="Wallace, Gordon G" uniqKey="Wallace G" first="Gordon G" last="Wallace">Gordon G. Wallace</name><affiliation><nlm:affiliation>§ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, New South Wales, Australia.</nlm:affiliation></affiliation></author><author><name sortKey="Gambhir, Sanjeev" sort="Gambhir, Sanjeev" uniqKey="Gambhir S" first="Sanjeev" last="Gambhir">Sanjeev Gambhir</name><affiliation><nlm:affiliation>§ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, New South Wales, Australia.</nlm:affiliation></affiliation></author><author><name sortKey="Blanc, Christophe" sort="Blanc, Christophe" uniqKey="Blanc C" first="Christophe" last="Blanc">Christophe Blanc</name><affiliation><nlm:affiliation>∥Laboratoire Charles Coulomb UMR 5221, Université Montpellier II, place Eugène Bataillon, 34095 Montpellier Cedex 5, France.</nlm:affiliation></affiliation></author><author><name sortKey="Anglaret, Eric" sort="Anglaret, Eric" uniqKey="Anglaret E" first="Eric" last="Anglaret">Eric Anglaret</name><affiliation><nlm:affiliation>∥Laboratoire Charles Coulomb UMR 5221, Université Montpellier II, place Eugène Bataillon, 34095 Montpellier Cedex 5, France.</nlm:affiliation></affiliation></author><author><name sortKey="Poulin, Philippe" sort="Poulin, Philippe" uniqKey="Poulin P" first="Philippe" last="Poulin">Philippe Poulin</name><affiliation><nlm:affiliation>†Centre de Recherche Paul-Pascal, Université de Bordeaux - CNRS, 115 Avenue Schweitzer, 33600 Pessac, France.</nlm:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2012">2012</date><idno type="RBID">pubmed:26292127</idno><idno type="pmid">26292127</idno><idno type="doi">10.1021/jz3008479</idno><idno type="wicri:Area/PubMed/Corpus">003B69</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">003B69</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Liquid Crystallinity and Dimensions of Surfactant-Stabilized Sheets of Reduced Graphene Oxide.</title><author><name sortKey="Zamora Ledezma, Camilo" sort="Zamora Ledezma, Camilo" uniqKey="Zamora Ledezma C" first="Camilo" last="Zamora-Ledezma">Camilo Zamora-Ledezma</name><affiliation><nlm:affiliation>†Centre de Recherche Paul-Pascal, Université de Bordeaux - CNRS, 115 Avenue Schweitzer, 33600 Pessac, France.</nlm:affiliation></affiliation></author><author><name sortKey="Puech, Nicolas" sort="Puech, Nicolas" uniqKey="Puech N" first="Nicolas" last="Puech">Nicolas Puech</name><affiliation><nlm:affiliation>†Centre de Recherche Paul-Pascal, Université de Bordeaux - CNRS, 115 Avenue Schweitzer, 33600 Pessac, France.</nlm:affiliation></affiliation></author><author><name sortKey="Zakri, Cecile" sort="Zakri, Cecile" uniqKey="Zakri C" first="Cécile" last="Zakri">Cécile Zakri</name><affiliation><nlm:affiliation>†Centre de Recherche Paul-Pascal, Université de Bordeaux - CNRS, 115 Avenue Schweitzer, 33600 Pessac, France.</nlm:affiliation></affiliation></author><author><name sortKey="Grelet, Eric" sort="Grelet, Eric" uniqKey="Grelet E" first="Eric" last="Grelet">Eric Grelet</name><affiliation><nlm:affiliation>†Centre de Recherche Paul-Pascal, Université de Bordeaux - CNRS, 115 Avenue Schweitzer, 33600 Pessac, France.</nlm:affiliation></affiliation></author><author><name sortKey="Moulton, Simon E" sort="Moulton, Simon E" uniqKey="Moulton S" first="Simon E" last="Moulton">Simon E. Moulton</name><affiliation><nlm:affiliation>§ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, New South Wales, Australia.</nlm:affiliation></affiliation></author><author><name sortKey="Wallace, Gordon G" sort="Wallace, Gordon G" uniqKey="Wallace G" first="Gordon G" last="Wallace">Gordon G. Wallace</name><affiliation><nlm:affiliation>§ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, New South Wales, Australia.</nlm:affiliation></affiliation></author><author><name sortKey="Gambhir, Sanjeev" sort="Gambhir, Sanjeev" uniqKey="Gambhir S" first="Sanjeev" last="Gambhir">Sanjeev Gambhir</name><affiliation><nlm:affiliation>§ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, New South Wales, Australia.</nlm:affiliation></affiliation></author><author><name sortKey="Blanc, Christophe" sort="Blanc, Christophe" uniqKey="Blanc C" first="Christophe" last="Blanc">Christophe Blanc</name><affiliation><nlm:affiliation>∥Laboratoire Charles Coulomb UMR 5221, Université Montpellier II, place Eugène Bataillon, 34095 Montpellier Cedex 5, France.</nlm:affiliation></affiliation></author><author><name sortKey="Anglaret, Eric" sort="Anglaret, Eric" uniqKey="Anglaret E" first="Eric" last="Anglaret">Eric Anglaret</name><affiliation><nlm:affiliation>∥Laboratoire Charles Coulomb UMR 5221, Université Montpellier II, place Eugène Bataillon, 34095 Montpellier Cedex 5, France.</nlm:affiliation></affiliation></author><author><name sortKey="Poulin, Philippe" sort="Poulin, Philippe" uniqKey="Poulin P" first="Philippe" last="Poulin">Philippe Poulin</name><affiliation><nlm:affiliation>†Centre de Recherche Paul-Pascal, Université de Bordeaux - CNRS, 115 Avenue Schweitzer, 33600 Pessac, France.</nlm:affiliation></affiliation></author></analytic><series><title level="j">The journal of physical chemistry letters</title><idno type="ISSN">1948-7185</idno><imprint><date when="2012" type="published">2012</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Graphene oxide (GO) flakes dissolved in water can spontaneously form liquid crystals. Liquid crystallinity presents an opportunity to process graphene materials into macroscopic assemblies with long-range ordering, but most graphene electronic functionalities are lost in oxidation treatments. Reduction of GO allows recovering functionalities and makes reduced graphene oxide (RGO) of greater interest. Unfortunately, chemical reduction of GO generally results in the aggregation of the flakes, with no liquid crystallinity observed. We report in the present work liquid crystals made of RGO. The addition of surfactants in appropriate conditions is used to stabilize the RGO flakes against aggregation maintaining their ability to form water-based liquid crystals. Structural and thermodynamical studies allow the dimensions of the flakes to be deduced. It is found that the thickness and diameter of RGO flakes are close to that of neat GO flakes.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">26292127</PMID><DateCreated><Year>2015</Year><Month>08</Month><Day>21</Day></DateCreated><DateCompleted><Year>2015</Year><Month>09</Month><Day>22</Day></DateCompleted><DateRevised><Year>2015</Year><Month>08</Month><Day>21</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">1948-7185</ISSN><JournalIssue CitedMedium="Print"><Volume>3</Volume><Issue>17</Issue><PubDate><Year>2012</Year><Month>Sep</Month><Day>06</Day></PubDate></JournalIssue><Title>The journal of physical chemistry letters</Title><ISOAbbreviation>J Phys Chem Lett</ISOAbbreviation></Journal><ArticleTitle>Liquid Crystallinity and Dimensions of Surfactant-Stabilized Sheets of Reduced Graphene Oxide.</ArticleTitle><Pagination><MedlinePgn>2425-30</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1021/jz3008479</ELocationID><Abstract><AbstractText>Graphene oxide (GO) flakes dissolved in water can spontaneously form liquid crystals. Liquid crystallinity presents an opportunity to process graphene materials into macroscopic assemblies with long-range ordering, but most graphene electronic functionalities are lost in oxidation treatments. Reduction of GO allows recovering functionalities and makes reduced graphene oxide (RGO) of greater interest. Unfortunately, chemical reduction of GO generally results in the aggregation of the flakes, with no liquid crystallinity observed. We report in the present work liquid crystals made of RGO. The addition of surfactants in appropriate conditions is used to stabilize the RGO flakes against aggregation maintaining their ability to form water-based liquid crystals. Structural and thermodynamical studies allow the dimensions of the flakes to be deduced. It is found that the thickness and diameter of RGO flakes are close to that of neat GO flakes.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Zamora-Ledezma</LastName><ForeName>Camilo</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>†Centre de Recherche Paul-Pascal, Université de Bordeaux - CNRS, 115 Avenue Schweitzer, 33600 Pessac, France.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>‡Laboratorio de Física de la Materia Condensada, Centro de Física, Instituto Venezolano de Investigaciones Científícas, Altos de Pipe, 1204 Caracas, Venezuela.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Puech</LastName><ForeName>Nicolas</ForeName><Initials>N</Initials><AffiliationInfo><Affiliation>†Centre de Recherche Paul-Pascal, Université de Bordeaux - CNRS, 115 Avenue Schweitzer, 33600 Pessac, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Zakri</LastName><ForeName>Cécile</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>†Centre de Recherche Paul-Pascal, Université de Bordeaux - CNRS, 115 Avenue Schweitzer, 33600 Pessac, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Grelet</LastName><ForeName>Eric</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>†Centre de Recherche Paul-Pascal, Université de Bordeaux - CNRS, 115 Avenue Schweitzer, 33600 Pessac, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Moulton</LastName><ForeName>Simon E</ForeName><Initials>SE</Initials><AffiliationInfo><Affiliation>§ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, New South Wales, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Wallace</LastName><ForeName>Gordon G</ForeName><Initials>GG</Initials><AffiliationInfo><Affiliation>§ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, New South Wales, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Gambhir</LastName><ForeName>Sanjeev</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>§ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, New South Wales, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Blanc</LastName><ForeName>Christophe</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>∥Laboratoire Charles Coulomb UMR 5221, Université Montpellier II, place Eugène Bataillon, 34095 Montpellier Cedex 5, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Anglaret</LastName><ForeName>Eric</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>∥Laboratoire Charles Coulomb UMR 5221, Université Montpellier II, place Eugène Bataillon, 34095 Montpellier Cedex 5, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Poulin</LastName><ForeName>Philippe</ForeName><Initials>P</Initials><AffiliationInfo><Affiliation>†Centre de Recherche Paul-Pascal, Université de Bordeaux - CNRS, 115 Avenue Schweitzer, 33600 Pessac, France.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2012</Year><Month>08</Month><Day>20</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>J Phys Chem Lett</MedlineTA><NlmUniqueID>101526034</NlmUniqueID><ISSNLinking>1948-7185</ISSNLinking></MedlineJournalInfo><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">X-ray scattering</Keyword><Keyword MajorTopicYN="N">bile salts</Keyword><Keyword MajorTopicYN="N">graphene</Keyword><Keyword MajorTopicYN="N">graphene oxide</Keyword><Keyword MajorTopicYN="N">liquid crystals</Keyword><Keyword MajorTopicYN="N">nematic</Keyword><Keyword MajorTopicYN="N">reduced graphene oxide</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2015</Year><Month>8</Month><Day>21</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2012</Year><Month>9</Month><Day>6</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2012</Year><Month>9</Month><Day>6</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">26292127</ArticleId><ArticleId IdType="doi">10.1021/jz3008479</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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