Engineering Thermoswitchable Lithographic Hybrid Gold Nanorods as Plasmonic Devices for Sensing and Active Plasmonics Applications

Nguyen, M.T.; Sun, Xiaoduan; Lacaze, Emmanuelle; Winkler, Pamina M.; Hohenau, Andreas; Krenn, Joachim R.; Bourdillon, C.; Lamouri, A.; Grand, Johan; Lévi, G.; Boubekeur-Lecaque, Leı̈la; Mangeney, Claire; Félidj, Nordin

doi:10.1021/acsphotonics.5b00280

Cited by 45 publications

(43 citation statements)

References 52 publications

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“…The development of strategies for the preparation of surfaces decorated with noble metal nanoparticle (MNP) assemblies has received significant attention in the last years, while their use in the most outstanding biological, catalytic, and optoelectronic applications is being anticipated. Indeed, to obtain surface arrays of MNPs different protocols have been reported, including lithography‐based, spin‐coating, connective deposition,[2b] surface‐initiated transfer radical polymerization (SI‐ATRP) combined with click chemistry, miniemulsion loaded with a metal precursor complex, self‐assembly at liquid–liquid interface, Langmuir–Blodgett, evaporation of gold by electron‐beam, and drop casting . Many of these methods present some disadvantages due partly to their complexity, and the less complex methods show poor control of outcome.…”

Section: Introductionmentioning

confidence: 99%

“…This feature can be exploited for the generation of 2D and 3D nanoparticle arrays. [1–3,6,8a,9] In this case, the polymer shell is used to control the gap between the particles, avoiding direct contact among metallic cores and, in addition, guiding the self‐assemble. Furthermore, the hydrophobic p(NIPAM) coating can trap hydrophobic analytes close to the Au NPs surface, amplifying the Raman signal, and making them attractive materials for sensing applications.…”

Section: Introductionmentioning

confidence: 99%

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Design of Nanostructured Surfaces Based on Metal NP Precipitation Strategy and their Catalytic Application

Guarrotxena

Garrido

Quijada‐Garrido

2018

Adv Materials Inter

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the MNP arrangement in an organized manner will prevent possible agglomerations, often observed in MNPs with the subsequent loss of functional properties. In this regard, the reversible temperature-induced coil-globule transition in water experienced by thermoresponsive polymers, such as poly(N-isopropylacrylamide) p(NIPAM), causes the polymer shrink above the lower critical solution temperature (LCST). This feature can be exploited for the generation of 2D and 3D nanoparticle arrays. [1-3,6,8a,9] In this case, the polymer shell is used to control the gap between the particles, avoiding direct contact among metallic cores and, in addition, guiding the self-assemble. Furthermore, the hydrophobic p(NIPAM) coating can trap hydrophobic analytes close to the Au NPs surface, amplifying the Raman signal, [3] and making them attractive materials for sensing applications. In this work, we investigate the MNPs coating with poly(2-(2-methoxyethoxy)ethyl methacrylate) p(MEO 2 MA), a thermoresponsive polymer, based on lateral chains of oligoethylene glycol, which exhibits a LCST around 26 °C. We demonstrate that setting the temperature close to the collapsing temperature of the thermoresponsive polymers, based on MEO 2 MA and a thiolated comonomer, is a simple strategy to attain the controlled precipitation of MNPs on a microstructured polymer surface (Scheme 1) consisting on well-aligned electrospun fibers of a biodegradable polymer with high plasmonic specific area.The arrangement of plasmonic NPs may find application for sensing, [10] and, the aligned metal NP-fiber, as scaffolds, for neural cells; since fibers coated with gold NPs can guide the neurite outgrowth. [7b] Nevertheless, another interesting property of noble metal NPs is their catalytic activity. Indeed, despite the widespread use of colloidal noble metal NPs in catalysis, [11] the extraordinary catalytic activity of pristine MNPs is often hampered due to their tendency to aggregate during the catalytic reaction, reducing their activity and preventing their reutilization. For this reason, to avoid the aggregation of the particles during catalysis and facilitate their recovery and reutilization, the use of coatings [11b,c,12] and supports [13] are strategies frequently used. Taken this into consideration, we propose a noble metal@polymer@fiber nanocomposite with the MNPs just on the surface of microfiber mats to take advantage of the mats' high surface area and their feasibility to be used for several cycles. In this work, the reduction of 4-nitrophenol in water with gold@polymer@fiber nanocomposite has been studied The fabrication of functional surfaces based on arrangements of metallic nanoparticles (MNPs) is challenging for biomedical, optoelectronic, and catalytic applications. Herein, the fabrication of 3D nanostructured microfibers is reported by the controlled cooperative precipitation of MNPs on electrospun polymer fiber mats, at the critical solution temperature of a thermoresponsive copolymer coating the MNPs surface. To obtain the metallic decorat...

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of Nanostructured Surfaces Based on Metal NP Precipitation Strategy and their Catalytic Application

Guarrotxena

Garrido

Quijada‐Garrido

2018

Adv Materials Inter

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“…Many approaches have been explored to actively control these plasmonic properties without changing the topographic features of the nanoparticles themselves. Liquid crystals [ 5 ], thermosensitive polymers [ 6 ], transition metal dichalcogenides [ 7 ] and graphene [ 8 ] monolayers have been used for this purpose. The change in the refractive index or the doping ability of these materials allows the plasmonic system’s environment to be actively changed and the plasmonic properties to be controlled.…”

Section: Introductionmentioning

confidence: 99%

Polarization-dependent strong coupling between silver nanorods and photochromic molecules

Lamri¹,

Veltri²,

Aubard³

et al. 2018

Beilstein J. Nanotechnol.

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Active plasmonics is a key focus for the development of advanced plasmonic applications. By selectively exciting the localized surface plasmon resonance sustained by the short or the long axis of silver nanorods, we demonstrate a polarization-dependent strong coupling between the plasmonic resonance and the excited state of photochromic molecules. By varying the width and the length of the nanorods independently, a clear Rabi splitting appears in the dispersion curves of both resonators.

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“… 24 Among the systems that utilize responsive polymers, poly( N -isopropylacrylamide) (pNIPAAm) based polymers (in particular copolymers with carboxylic acid groups) hold a prominent position due to their strong volumetric change upon swelling and collapsing by variation of the temperature around its lower critical solution temperature (LCST) of ∼32 °C. This polymer was explored in form of brushes that surrounded 25 or directly capped 26 , 27 metallic nanoparticles in order to reversibly tune localized surface plasmon resonance. In addition, pNIPAAm microgels 28 were coupled with Au nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Tunable Plasmonic Nanohole Arrays Actuated by a Thermoresponsive Hydrogel Cushion

et al. 2015

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New plasmonic structure with actively tunable optical characteristics based on thermoresponsive hydrogel is reported. It consists of a thin, template-stripped Au film with arrays of nanoholes that is tethered to a transparent support by a cross-linked poly(N-isopropylacrylamide) (pNIPAAm)-based polymer network. Upon a contact of the porous Au surface with an aqueous environment, a rapid flow of water through the pores enables swelling and collapsing of the underlying pNIPAAm network. The swelling and collapsing could be triggered by small temperature changes around the lower critical solution temperature (LCST) of the hydrogel. The process is reversible, and it is associated with strong refractive index changes of Δn ∼ 0.1, which characteristically alters the spectrum of surface plasmon modes supported by the porous Au film. This approach can offer new attractive means for optical biosensors with flow-through architecture and actively tunable plasmonic transmission optical filters.

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Engineering Thermoswitchable Lithographic Hybrid Gold Nanorods as Plasmonic Devices for Sensing and Active Plasmonics Applications

Abstract: International audienc

Cited by 45 publications

References 52 publications

Design of Nanostructured Surfaces Based on Metal NP Precipitation Strategy and their Catalytic Application

Design of Nanostructured Surfaces Based on Metal NP Precipitation Strategy and their Catalytic Application

Polarization-dependent strong coupling between silver nanorods and photochromic molecules

Tunable Plasmonic Nanohole Arrays Actuated by a Thermoresponsive Hydrogel Cushion

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