Comparative study of amphiphilic hyperbranched and linear polymer stabilized organo‐soluble gold nanoparticles as efficient recyclable catalysts in the biphasic reduction of 4‐nitrophenol
Identifieur interne : 000036 ( Main/Exploration ); précédent : 000035; suivant : 000037Comparative study of amphiphilic hyperbranched and linear polymer stabilized organo‐soluble gold nanoparticles as efficient recyclable catalysts in the biphasic reduction of 4‐nitrophenol
Auteurs : Nan Hu [République populaire de Chine] ; Jing Uan Yin [République populaire de Chine] ; Qiang Tang [République populaire de Chine] ; Yu Chen [République populaire de Chine]Source :
- Journal of Polymer Science Part A: Polymer Chemistry [ 0887-624X ] ; 2011-09-01.
English descriptors
Abstract
A series of organo‐soluble spherical gold nanoparticles (AuNPs) were prepared through the reduction of HAuCl4 by NaBH4 in the presence of amphiphilic hyperbranched polymers that had a hydrophilic hyperbranched polyethylenimine core and a hydrophobic shell formed by many palmitamide (C16) chains. For comparison, the corresponding linear polymeric analog derived from linear polyethylenimine was also used to prepare the organo‐soluble AuNPs. The obtained AuNPs were characterized by transmission electron microscopy. It was found that higher feed ratio of polymer to HAuCl4 and utilization of polymers with higher C16 density usually resulted in smaller AuNPs with relatively lower polydispersity. Except of the polymer having the pronounced low molecular weight, the molecular weight and the morphology of the amphiphilic polymers had almost no obvious effect on the size of the formed AuNPs. These organo‐soluble AuNPs could be used as efficient catalysts for the biphasic catalytic reduction of 4‐nitrophenol by NaBH4. Their apparent rate coefficients had correlation with the molecular weight of the used amphiphilic polymers, but were less relevant to the morphology of these polymers. These organo‐soluble AuNPs could be conveniently recovered and reused many times. The morphology of the capping polymers had obvious effect on the lifetime of the AuNPs catalysts in the catalytic reduction of 4‐nitrophenol. Except of the pronounced low molecular weight hyperbranched polymer, the other hyperbranched ones with relatively high molecular weight rendered the AuNPs to have bigger turnover number values than their linear analog. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011
Url:
DOI: 10.1002/pola.24818
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 000285
- to stream Istex, to step Curation: 000241
- to stream Istex, to step Checkpoint: 000020
- to stream Main, to step Merge: 000047
- to stream Main, to step Curation: 000047
Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Comparative study of amphiphilic hyperbranched and linear polymer stabilized organo‐soluble gold nanoparticles as efficient recyclable catalysts in the biphasic reduction of 4‐nitrophenol</title><author><name sortKey="Hu, Nan" sort="Hu, Nan" uniqKey="Hu N" first="Nan" last="Hu">Nan Hu</name></author><author><name sortKey="Yin, Jing Uan" sort="Yin, Jing Uan" uniqKey="Yin J" first="Jing Uan" last="Yin">Jing Uan Yin</name></author><author><name sortKey="Tang, Qiang" sort="Tang, Qiang" uniqKey="Tang Q" first="Qiang" last="Tang">Qiang Tang</name></author><author><name sortKey="Chen, Yu" sort="Chen, Yu" uniqKey="Chen Y" first="Yu" last="Chen">Yu Chen</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:54616AA25CFC35D986C6D063620CA47777096275</idno><date when="2011" year="2011">2011</date><idno type="doi">10.1002/pola.24818</idno><idno type="url">https://api.istex.fr/document/54616AA25CFC35D986C6D063620CA47777096275/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000285</idno><idno type="wicri:Area/Istex/Curation">000241</idno><idno type="wicri:Area/Istex/Checkpoint">000020</idno><idno type="wicri:doubleKey">0887-624X:2011:Hu N:comparative:study:of</idno><idno type="wicri:Area/Main/Merge">000047</idno><idno type="wicri:Area/Main/Curation">000047</idno><idno type="wicri:Area/Main/Exploration">000036</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Comparative study of amphiphilic hyperbranched and linear polymer stabilized organo‐soluble gold nanoparticles as efficient recyclable catalysts in the biphasic reduction of 4‐nitrophenol</title><author><name sortKey="Hu, Nan" sort="Hu, Nan" uniqKey="Hu N" first="Nan" last="Hu">Nan Hu</name><affiliation wicri:level="1"><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Department of Chemistry, School of Sciences, Tianjin University, Tianjin 300072</wicri:regionArea><placeName><settlement type="city">Tianjin</settlement></placeName></affiliation></author><author><name sortKey="Yin, Jing Uan" sort="Yin, Jing Uan" uniqKey="Yin J" first="Jing Uan" last="Yin">Jing Uan Yin</name><affiliation wicri:level="1"><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Department of Chemistry, School of Sciences, Tianjin University, Tianjin 300072</wicri:regionArea><placeName><settlement type="city">Tianjin</settlement></placeName></affiliation></author><author><name sortKey="Tang, Qiang" sort="Tang, Qiang" uniqKey="Tang Q" first="Qiang" last="Tang">Qiang Tang</name><affiliation wicri:level="1"><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Department of Chemistry, School of Sciences, Tianjin University, Tianjin 300072</wicri:regionArea><placeName><settlement type="city">Tianjin</settlement></placeName></affiliation></author><author><name sortKey="Chen, Yu" sort="Chen, Yu" uniqKey="Chen Y" first="Yu" last="Chen">Yu Chen</name><affiliation wicri:level="1"><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Department of Chemistry, School of Sciences, Tianjin University, Tianjin 300072</wicri:regionArea><placeName><settlement type="city">Tianjin</settlement></placeName></affiliation><affiliation wicri:level="1"><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Key Laboratory of Molecular Engineering of Polymers (Fudan University), Ministry of Education</wicri:regionArea><wicri:noRegion>Ministry of Education</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Polymer Science Part A: Polymer Chemistry</title><title level="j" type="abbrev">J. Polym. Sci. A Polym. Chem.</title><idno type="ISSN">0887-624X</idno><idno type="eISSN">1099-0518</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2011-09-01">2011-09-01</date><biblScope unit="volume">49</biblScope><biblScope unit="issue">17</biblScope><biblScope unit="page" from="3826">3826</biblScope><biblScope unit="page" to="3834">3834</biblScope></imprint><idno type="ISSN">0887-624X</idno></series><idno type="istex">54616AA25CFC35D986C6D063620CA47777096275</idno><idno type="DOI">10.1002/pola.24818</idno><idno type="ArticleID">POLA24818</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0887-624X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>amphiphiles</term><term>hyperbranched</term><term>nanoparticles</term><term>recyclable catalyst</term><term>stabilizer</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">A series of organo‐soluble spherical gold nanoparticles (AuNPs) were prepared through the reduction of HAuCl4 by NaBH4 in the presence of amphiphilic hyperbranched polymers that had a hydrophilic hyperbranched polyethylenimine core and a hydrophobic shell formed by many palmitamide (C16) chains. For comparison, the corresponding linear polymeric analog derived from linear polyethylenimine was also used to prepare the organo‐soluble AuNPs. The obtained AuNPs were characterized by transmission electron microscopy. It was found that higher feed ratio of polymer to HAuCl4 and utilization of polymers with higher C16 density usually resulted in smaller AuNPs with relatively lower polydispersity. Except of the polymer having the pronounced low molecular weight, the molecular weight and the morphology of the amphiphilic polymers had almost no obvious effect on the size of the formed AuNPs. These organo‐soluble AuNPs could be used as efficient catalysts for the biphasic catalytic reduction of 4‐nitrophenol by NaBH4. Their apparent rate coefficients had correlation with the molecular weight of the used amphiphilic polymers, but were less relevant to the morphology of these polymers. These organo‐soluble AuNPs could be conveniently recovered and reused many times. The morphology of the capping polymers had obvious effect on the lifetime of the AuNPs catalysts in the catalytic reduction of 4‐nitrophenol. Except of the pronounced low molecular weight hyperbranched polymer, the other hyperbranched ones with relatively high molecular weight rendered the AuNPs to have bigger turnover number values than their linear analog. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011</div></front></TEI><affiliations><list><country><li>République populaire de Chine</li></country><settlement><li>Tianjin</li></settlement></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Hu, Nan" sort="Hu, Nan" uniqKey="Hu N" first="Nan" last="Hu">Nan Hu</name></noRegion><name sortKey="Chen, Yu" sort="Chen, Yu" uniqKey="Chen Y" first="Yu" last="Chen">Yu Chen</name><name sortKey="Chen, Yu" sort="Chen, Yu" uniqKey="Chen Y" first="Yu" last="Chen">Yu Chen</name><name sortKey="Tang, Qiang" sort="Tang, Qiang" uniqKey="Tang Q" first="Qiang" last="Tang">Qiang Tang</name><name sortKey="Yin, Jing Uan" sort="Yin, Jing Uan" uniqKey="Yin J" first="Jing Uan" last="Yin">Jing Uan Yin</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Musique/explor/MonteverdiV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000036 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000036 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Musique
|area= MonteverdiV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= ISTEX:54616AA25CFC35D986C6D063620CA47777096275
|texte= Comparative study of amphiphilic hyperbranched and linear polymer stabilized organo‐soluble gold nanoparticles as efficient recyclable catalysts in the biphasic reduction of 4‐nitrophenol
}}
| This area was generated with Dilib version V0.6.21. |  |