Light-assisted synthesis and functionalization of silver nanoparticles with thiol derivative thioxanthones: new insights into the engineering of metal/chromophore nanoassemblies
Identifieur interne : 000689 ( Hal/Curation ); précédent : 000688; suivant : 000690Light-assisted synthesis and functionalization of silver nanoparticles with thiol derivative thioxanthones: new insights into the engineering of metal/chromophore nanoassemblies
Auteurs : Songlin Niu [France] ; Raphaël Schneider [France] ; Loïc Vidal [France] ; Samar Hajjar-Garreau [France] ; Lavinia Balan [France]Source :
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Abstract
In this study, silver nanoparticles (Ag NPs) were generated, functionalized, and stabilized using a one-step photochemical approach that does not require more than few minutes with a low power near UV LED source. A series of thiol-functionalized thioxanthone (TX) derivatives were prepared and used for the photoinduced synthesis of Ag NPs and their surface functionalization and stabilization. Upon illumination, Ag+ ions are reduced by free radicals generated through an oxidoreductive process occurring between excited TX groups and N-methyldiethanolamine. This process generates monodispersed silver nanoparticles with an average diameter about 2-7 nm depending on the TX derivative used. Due to the strong interaction between Ag atoms and thiol groups of the ligands, AgNPs are capped in situ by TX derivatives and exhibit remarkable stability in solution. Subsequent studies carried out on silver NPs/TX nanoassemblies (designed as AgNPs@S-TX) demonstrated their potentials in free radical photopolymerization of acrylate monomers.
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DOI: 10.1007/s11051-014-2620-y
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<front><div type="abstract" xml:lang="en">In this study, silver nanoparticles (Ag NPs) were generated, functionalized, and stabilized using a one-step photochemical approach that does not require more than few minutes with a low power near UV LED source. A series of thiol-functionalized thioxanthone (TX) derivatives were prepared and used for the photoinduced synthesis of Ag NPs and their surface functionalization and stabilization. Upon illumination, Ag+ ions are reduced by free radicals generated through an oxidoreductive process occurring between excited TX groups and N-methyldiethanolamine. This process generates monodispersed silver nanoparticles with an average diameter about 2-7 nm depending on the TX derivative used. Due to the strong interaction between Ag atoms and thiol groups of the ligands, AgNPs are capped in situ by TX derivatives and exhibit remarkable stability in solution. Subsequent studies carried out on silver NPs/TX nanoassemblies (designed as AgNPs@S-TX) demonstrated their potentials in free radical photopolymerization of acrylate monomers.</div>
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<author role="aut"><persName><forename type="first">Samar</forename>
<surname>Hajjar-Garreau</surname>
</persName>
<idno type="halAuthorId">1071570</idno>
<affiliation ref="#struct-239285"></affiliation>
</author>
<author role="aut"><persName><forename type="first">Lavinia</forename>
<surname>Balan</surname>
</persName>
<idno type="halAuthorId">106257</idno>
<affiliation ref="#struct-106332"></affiliation>
</author>
</analytic>
<monogr><idno type="halJournalId" status="INCOMING">96514</idno>
<title level="j">Journal of Nanoparticles Research</title>
<imprint><biblScope unit="volume">16</biblScope>
<biblScope unit="pp">2620</biblScope>
<date type="datePub">2014-09-08</date>
</imprint>
</monogr>
<idno type="doi">10.1007/s11051-014-2620-y</idno>
</biblStruct>
</sourceDesc>
<profileDesc><langUsage><language ident="en">English</language>
</langUsage>
<textClass><keywords scheme="author"><term xml:lang="en">Photoinduced synthesis</term>
<term xml:lang="en">Silver nanoparticles</term>
<term xml:lang="en">Photopolymerization</term>
<term xml:lang="en">Thioxanthone derivatives</term>
<term xml:lang="en">Nanocomposites</term>
<term xml:lang="en">Surface plasmon resonance</term>
</keywords>
<classCode scheme="halDomain" n="chim.mate">Chemical Sciences/Material chemistry</classCode>
<classCode scheme="halTypology" n="ART">Journal articles</classCode>
</textClass>
<abstract xml:lang="en">In this study, silver nanoparticles (Ag NPs) were generated, functionalized, and stabilized using a one-step photochemical approach that does not require more than few minutes with a low power near UV LED source. A series of thiol-functionalized thioxanthone (TX) derivatives were prepared and used for the photoinduced synthesis of Ag NPs and their surface functionalization and stabilization. Upon illumination, Ag+ ions are reduced by free radicals generated through an oxidoreductive process occurring between excited TX groups and N-methyldiethanolamine. This process generates monodispersed silver nanoparticles with an average diameter about 2-7 nm depending on the TX derivative used. Due to the strong interaction between Ag atoms and thiol groups of the ligands, AgNPs are capped in situ by TX derivatives and exhibit remarkable stability in solution. Subsequent studies carried out on silver NPs/TX nanoassemblies (designed as AgNPs@S-TX) demonstrated their potentials in free radical photopolymerization of acrylate monomers.</abstract>
</profileDesc>
</hal>
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