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GoldHelix: Gold Nanoparticles Forming 3D Helical Superstructures with Controlled Morphology and Strong Chiroptical Property

hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorCHENG, Jiaji
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorSAUX, Guillaume Le
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorGAO, Jie
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorBUFFETEAU, Thierry
hal.structure.identifierLaboratoire de Chimie et Physique - Approche Multi-échelle des Milieux Complexes [LCP-A2MC]
dc.contributor.authorBATTIE, Yann
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorBAROIS, Philippe
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorPONSINET, Virginie
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDELVILLE, Marie-Hélène
hal.structure.identifierInstitut de Physique et Chimie des Matériaux de Strasbourg [IPCMS]
dc.contributor.authorERSEN, Ovidiu
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorPOUGET, Emilie
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorODA, Reiko
dc.date.issued2017-03-30
dc.identifier.issn1936-0851
dc.description.abstractEnPlasmonic nanoparticles, particularly gold nanoparticles (GNPs) hold a great potential as structural and functional building blocks for three-dimensional (3D) nanoarchitectures with specific optical applications. However, a rational control of their assembly into nanoscale superstructures with defined positioning and overall arrangement still remains challenging. Herein, we propose a solution to this challenge by using as building blocks: (1) nanometric silica helices with tunable handedness and sizes as a matrix and (2) GNPs with diameter varying from 4 to 10 nm to prepare a collection of helical GNPs superstructures (called Goldhelices hereafter). These nanomaterials exhibit well-defined arrangement of GNPs following the helicity of the silica template. Strong chiroptical activity is evidenced by circular dichroism (CD) spectroscopy at the wavelength of the surface plasmon resonance (SPR) of the GNPs with a anisotropy factor (g-factor) of the order of 1 × 10−4, i.e., 10-fold larger than what is typically reported in the literature. Such CD signals were simulated using a coupled dipole method which fit very well the experimental data. The measured signals are 1−2 orders of magnitude lower than the simulated signals, which is explained by the disordered GNPs grafting, the polydispersity of the GNPs, and the dimension of the nanohelices.....
dc.description.sponsorshipInitiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.subject.enSilica
dc.subject.enChiral nanostructures
dc.subject.enChiroptical properties
dc.subject.enCircular dichroism of plasmon
dc.subject.enGold nanoparticles
dc.subject.enPlasmonic nanoparticles
dc.title.enGoldHelix: Gold Nanoparticles Forming 3D Helical Superstructures with Controlled Morphology and Strong Chiroptical Property
dc.typeArticle de revue
dc.identifier.doi10.1021/acsnano.6b08723
dc.subject.halPhysique [physics]/Physique [physics]
dc.subject.halChimie/Matériaux
bordeaux.journalACS Nano
bordeaux.page3806-3818
bordeaux.volume11
bordeaux.issue4
bordeaux.peerReviewedoui
hal.identifierhal-01517988
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01517988v1
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