Development of New Localized Surface Plasmon Resonance Interfaces Based on Gold Nanostructures Sandwiched between Tin-Doped Indium Oxide Films

Niedziółka‐Jönsson, Joanna; Barka, Fatiha; Castel, Xavier; Pisarek, Marcin; Bezzi, Nacer; Boukherroub, Rabah; Szunerits, Sabine

doi:10.1021/la903330d

Cited by 19 publications

(29 citation statements)

References 33 publications

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“…The optical extinction spectra corresponding to before and after HSA adsorption onto silica- and titania-coated gold nanodisks are shown in Figure 2 A. The presence of different dielectric coatings leads to a significant variation in the initial λ max position (i.e., ~715 nm and ~767 nm for silica- and titania-coated sensors, respectively), which arises from perturbations in the electromagnetic field distribution around the gold nanodisks due to the presence of the dielectric coatings [ 64 , 65 , 66 ]. Consequently, the distinct plasmonic properties result in the sensor arrays exhibiting different bulk refractive index sensitivities, which typically increase as the LSPR peak position moves to higher wavelengths [ 67 , 68 ].…”

Section: Resultsmentioning

confidence: 99%

Quantitative Comparison of Protein Adsorption and Conformational Changes on Dielectric-Coated Nanoplasmonic Sensing Arrays

Ferhan

Jackman

Sut

et al. 2018

Sensors

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Nanoplasmonic sensors are a popular, surface-sensitive measurement tool to investigate biomacromolecular interactions at solid-liquid interfaces, opening the door to a wide range of applications. In addition to high surface sensitivity, nanoplasmonic sensors have versatile surface chemistry options as plasmonic metal nanoparticles can be coated with thin dielectric layers. Within this scope, nanoplasmonic sensors have demonstrated promise for tracking protein adsorption and substrate-induced conformational changes on oxide film-coated arrays, although existing studies have been limited to single substrates. Herein, we investigated human serum albumin (HSA) adsorption onto silica- and titania-coated arrays of plasmonic gold nanodisks by localized surface plasmon resonance (LSPR) measurements and established an analytical framework to compare responses across multiple substrates with different sensitivities. While similar responses were recorded on the two substrates for HSA adsorption under physiologically-relevant ionic strength conditions, distinct substrate-specific behavior was observed at lower ionic strength conditions. With decreasing ionic strength, larger measurement responses occurred for HSA adsorption onto silica surfaces, whereas HSA adsorption onto titania surfaces occurred independently of ionic strength condition. Complementary quartz crystal microbalance-dissipation (QCM-D) measurements were also performed, and the trend in adsorption behavior was similar. Of note, the magnitudes of the ionic strength-dependent LSPR and QCM-D measurement responses varied, and are discussed with respect to the measurement principle and surface sensitivity of each technique. Taken together, our findings demonstrate how the high surface sensitivity of nanoplasmonic sensors can be applied to quantitatively characterize protein adsorption across multiple surfaces, and outline broadly-applicable measurement strategies for biointerfacial science applications.

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Section: Resultsmentioning

confidence: 99%

Quantitative Comparison of Protein Adsorption and Conformational Changes on Dielectric-Coated Nanoplasmonic Sensing Arrays

Ferhan

Jackman

Sut

et al. 2018

Sensors

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“…times), ethanol (5 min, 2 times) and finally with water, and dried under a nitrogen stream. 30 2.3.3. ''Clicking'' alkyne-functionalized cyclophane (1) to azide-terminated surface.…”

Section: Deposition Of Ito Overlayersmentioning

confidence: 99%

“…The azide-terminated ITO/Au NSs/ITO surface was immersed in 10 mL of a solution of acetonitrile with alkyne-functionalized cyclophane (2 mM), CuI (2 mM) and DBU (0.1 M) and kept for 48 h at 70 C. The resulting surface was washed with acetonitrile, ethanol and water, and dried under a stream of nitrogen. 30 2.4. Instrumentation 2.4.1.…”

Section: Deposition Of Ito Overlayersmentioning

confidence: 99%

Optical and electrochemical properties of tunable host–guest complexes linked to plasmonic interfaces

et al. 2011

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This article describes the use of localized surface plasmon resonance (LSPR) interface to detect complexation/decomplexation steps of a controllable host-guest system at the solid-liquid interface. The LSPR interfaces consist of a sandwiched structure comprising a tin-doped indium oxide (ITO) substrate, gold nanostructures (Au NSs) and a thin ITO film overcoating. ''Click'' chemistry was used to covalently link an alkyne-functionalized p-electron deficient tetracationic cyclophane cyclobis(paraquat-p-phenylene) (CBPQT 4+ ) unit to an azide-terminated LSPR interface. The modified interfaces were characterized using X-ray photoelectron spectroscopy (XPS), cyclic voltammetry and UV-vis transmission spectroscopy. Tetrathiafulvalene (TTF) was used as a model guest molecule to demonstrate the possibility to follow the complexation/decomplexation events by monitoring the change in the LSPR signal. The results demonstrate that redox controlled host-guest complexation at the surface can be monitored effectively using LSPR.

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“…69,73,74,[79][80][81][82] Por exemplo, nanoesferas são facilmente obtidas e se caracterizam por uma distribuição da polarizabilidade na superfície concentrada nos polos. Por outro lado, através de sínteses com procedimentos um pouco mais elaborados, pode-se obter estruturas mais complexas como nanobipirâmides, nanobastões, nanoshells, nanobranches, etc.…”

Section: Comparação Do Desempenho De Biossensores Plasmônicos Utilizaunclassified

Ressonância de plasmon de superfície localizado e aplicação em biossensores e células solares

Santos¹,

Santos²,

Thesing³

et al. 2016

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LOCALIZED SURFACE PLASMON RESSONANCE APPLIED TO BIOSENSORS AND SOLAR CELLS. Within the last decades, the research on nanoparticles presenting localized surface plasmon resonance has increased constantly. In these materials, the interaction between electrons and incident light results in charge separation, enhancement of the electromagnetic field on the nanoparticles surface and in unique optical properties. Although many metals such as gold, silver, copper and aluminum present localized surface plasmon resonance within the visible range, gold and silver are the most commonly studied metals, due to the chemical inertia of gold and intense plasmon resonance from silver. In this review, we provide a description of the origin of localized surface plasmon resonance through the works developed by Mie, Maxwell and Maxwell-Garnett and a description of many examples of application of plasmonic nanoparticles on biosensors and solar cells, detailing the contribution of these plasmonic nanoparticles on the performance of these devices.Keywords: LSPR; Localized Surface Plasmon Resonance; biosensor; solar cell. INTRODUÇÃONos últimos 20 anos o interesse por nanopartículas metálicas (NPs-M) tem aumentado constantemente devido a sua ampla variedade de aplicações.1-8 Vários grupos de pesquisa têm estudado desde nanopartículas isoladas de cerca de 1 nm até nanopartículas de centenas de nanômetros, assim como seus aglomerados, buscando entender seu comportamento óptico e catalítico. Adicionalmente, a literatura descreve a constante busca por metodologias de síntese cada vez mais simples, de baixo custo e com alta reprodutibilidade. O comportamento óptico de nanopartículas metálicas tem fascinado a humanidade há vários séculos através de obras de arte, mesmo antes que a palavra nanotecnologia fosse utilizada.9 Um dos exemplos mais conhecidos é a Taça de Lycurgus (século 4 d.C), que tem em sua composição nanopartículas de ouro (NPAu).10 No entanto, foi somente em 1857 que as NPs-M receberam maior atenção devido aos estudos de Michael Faraday sobre o efeito da interação da luz em uma solução coloidal de NPAu obtida através da redução do cloreto de ouro pelo fósforo.11,12 Deste então, o interesse nestas NPs tem aumentado e novas metodologias de síntese e caracterização têm sido desenvolvidas, possibilitando grande controle de tamanho e formato.13-15 A pesquisa nesta área foi enriquecida pela compreensão do efeito da ressonância de plasmon de superfície localizado (LSPR), que explica o comportamento óptico destes materiais. Mie foi o primeiro a elucidar a origem das cores nestas estruturas e sua teoria foi posteriormente complementada com os modelos de Maxwell-Garnett que explicavam a interação de NPs-M com o meio. Estes estudos proporcionaram uma ampla visão quanto as possíveis aplicações das NPs-M, sendo atualmente empregada no desenvolvimento de novos materiais como células solares, biossensores e catalisadores. Nesta revisão, serão abordados os embasamentos teóricos envolvidos no efeito LSPR de NPs-M, destacando a aplicação destas n...

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Development of New Localized Surface Plasmon Resonance Interfaces Based on Gold Nanostructures Sandwiched between Tin-Doped Indium Oxide Films

Cited by 19 publications

References 33 publications

Quantitative Comparison of Protein Adsorption and Conformational Changes on Dielectric-Coated Nanoplasmonic Sensing Arrays

Quantitative Comparison of Protein Adsorption and Conformational Changes on Dielectric-Coated Nanoplasmonic Sensing Arrays

Optical and electrochemical properties of tunable host–guest complexes linked to plasmonic interfaces

Ressonância de plasmon de superfície localizado e aplicação em biossensores e células solares

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