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Gold nanoparticle deposition on silica nanohelices : a new controllable 3D substrate in aqueous suspension for optical sensing.

hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorTOMOTO, Rumi
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorLECOMTE, Sophie
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorSI, Satyabrata
hal.structure.identifierInstitut de Physique et Chimie des Matériaux de Strasbourg [IPCMS]
dc.contributor.authorMOLDAVEN, Simona
hal.structure.identifierInstitut de Physique et Chimie des Matériaux de Strasbourg [IPCMS]
dc.contributor.authorERSEN, Ovidiu
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDELVILLE, Marie-Hélène
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorODA, Reiko
dc.date.issued2012
dc.identifier.issn1932-7447
dc.description.abstractEnWe describe new methods to prepare gold nanoparticle/silica nanohelix hybrid nanostructures which form a 3D network in the aqueous phase. Nanometric silica helices and tubules obtained by sol-gel polycondensation on organic templates of self-assembled amphiphilic molecules were further functionalized with (3-aminopropyl)triethoxysilane (APTES) or (3-mercaptopropyl)triethoxysilane (MPTES). These helices interact strongly with gold nanoparticles (GNPs) of various diameters (1-15 nm). Small GNPs (1-2 nm) at the surface of silica nanohelices grew to about 5 nm when stored in the appropriate organic solvent, whereas this growth process was not observed in water, allowing the size of GNPs at the surface of silica to be controlled by a simple solvent exchange. Larger GNPs (more than 10 nm) at the surface of nano hybrid fibers were used to produce surface enhanced raman scattering (SERS) using benzenthiol as a probe. This provides a novel sustainable approach for designing nanohybrid systems with photonic applications such as ultrasensitive chemical and biological sensors using a simple aqueous suspension of a 3D network of nanohelices.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.subjectNanoparticles
dc.subjectGold
dc.subjectSilica
dc.subjectAqueous phase
dc.title.enGold nanoparticle deposition on silica nanohelices : a new controllable 3D substrate in aqueous suspension for optical sensing.
dc.typeArticle de revue
dc.identifier.doi10.1021/jp307784m
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Physical Chemistry C
bordeaux.page23143-23152
bordeaux.volume116
bordeaux.issue43
bordeaux.peerReviewedoui
hal.identifierhal-00752117
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00752117v1
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