Electroless deposition of gold thin films on silicon for surface-enhanced infrared spectroelectrochemistry

Miyake, Hiroto; Ye, Shen; Osawa, Masatoshi

doi:10.1016/s1388-2481(02)00510-6

Cited by 358 publications

(383 citation statements)

References 21 publications

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“…A more detailed description of this flow-cell configuration was previously given in [31]. In brief, the central cell Au film was prepared by electroless deposition following the procedure reported previously [32][33][34]. It has to be thin enough to allow the IR radiation to pass to the nanoparticles, but thick enough to be sufficiently conductive for obtaining a good electrochemical response.…”

Section: Methodsmentioning

confidence: 99%

Ethanol oxidation on shape-controlled platinum nanoparticles at different pHs: A combined in situ IR spectroscopy and online mass spectrometry study

Busó-Rogero

Brimaud

Sollá-Gullón

et al. 2016

Journal of Electroanalytical Chemistry

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Ethanol oxidation on different shape-controlled platinum nanoparticles at different pHs was studied using electrochemical, Attenuated Total Reflection -Fourier Transform Infrared Spectroscopy (ATR-FTIR) and, especially, Differential Electrochemical Mass Spectrometry (DEMS) techniques, which gives interesting quantitative information about the products of ethanol oxidation. Two Pt nanoparticle samples were used for this purpose: (100) and (111) preferentially oriented Pt nanoparticles. The results are in agreement with previous findings that the preferred decomposition product depends on surface structure, with COads formation on (100) domains and acetaldehyde/acetic acid formation on (111) domains. However, new information has been obtained about the changes in CHx and CO formation at lower potentials when the pH is changed, showing that CHx formation is favored against the decrease in CO adsorption on (100) domains. At higher potentials, complete oxidation to CO2 occurs from both CHx and CO fragments. In (111) Pt nanoparticles, the splitting of C-C bond is hindered, favoring acetaldehyde and acetate formation even in 0.5 M H2SO4. C1 fragments become even less when the pH increases, being nearly negligible in the highest pH studied.

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Section: Methodsmentioning

confidence: 99%

Ethanol oxidation on shape-controlled platinum nanoparticles at different pHs: A combined in situ IR spectroscopy and online mass spectrometry study

Busó-Rogero

Brimaud

Sollá-Gullón

et al. 2016

Journal of Electroanalytical Chemistry

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“…A nanostructured gold film was chemically deposited on an ATR Silicon prism and electrochemically cleaned as previously described in (Miyake et al, 2002). This treatment resulted in island like structures on the gold surface.…”

Section: Seirasmentioning

confidence: 99%

Electrosynthesized MIPs for transferrin: Plastibodies or nano-filters?

Zhang

Yarman

Erdőssy

et al. 2018

Biosensors and Bioelectronics

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Molecularly imprinted polymer (MIP) nanofilms for transferrin (Trf) have been synthesized on gold surfaces by electro-polymerizing the functional monomer scopoletin in the presence of the protein target or around pre-adsorbed Trf. As determined by atomic force microscopy (AFM) the film thickness was comparable with the molecular dimension of the target. The target (re)binding properties of the electro-synthesized MIP films was evaluated by cyclic voltammetry (CV) and square wave voltammetry (SWV) through the target-binding induced permeability changes of the MIP nanofilms to the ferricyanide redox marker, as well as by surface plasmon resonance (SPR) and surface enhanced infrared absorption spectroscopy (SEIRAS) of the immobilized protein molecules. For Trf a linear concentration dependence in the lower micromolar range and an imprinting factor of ~5 was obtained by 2 SWV and SPR. Furthermore, non-target proteins including the iron-free apo-Trf were discriminated by pronounced size and shape specificity. Whilst it is generally assumed that the rebinding of the target or of cross-reacting proteins exclusively takes place at the polymer here we considered also the interaction of the protein molecules with the underlying gold transducers. We demonstrate by SWV that adsorption of proteins suppresses the signal of the redox marker even at the bare gold surface and by SEIRAS that the treatment of the MIP with proteinase K or NaOH only partially removes the target protein. Therefore, we conclude that when interpreting binding of proteins to directly MIP-covered gold electrodes the interactions between the protein and the gold surface should also be considered.

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“…Dependent on the use of electrochemical workstation or not, chemical methods are divided into electroless deposition and electrochemical deposition. In electroless deposition, chemical reactions between solutes and prisms take place on the prism surface, forming large area of metal films with islands or gaps [48,49]. A derivate method is to disperse nanocrystal seeds on the prism surface and control the chemical deposition extending from the seeds [21,50].…”

Section: Substrates Fabricationmentioning

confidence: 99%

Attenuated Total Reflection Surface-Enhanced Infrared Absorption Spectroscopy: a Powerful Technique for Bioanalysis

Zhang

et al. 2017

J. Anal. Test.

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Attenuated total reflection surface-enhanced infrared absorption spectroscopy (ATR-SEIRAS) has recently been proven to be a powerful tool for bioanalysis. It enables in situ and in real-time observation of dynamic processes occurring on specific interface, revealing rich structural and functional information of biomolecules at sub monolayer level. The aim of this general review was to give an overview of the cutting edge applications of ATR-SEIRAS. We start with description of the basic configuration of the standard ATR-SEIRAS platform. The enhanced mechanisms and methods to fabricate enhanced substrates are then presented. We discuss the recent developments, challenges and applications of ATR-SEIRAS in bioanalysis, mainly focusing on DNA analysis, protein behavior and cell properties. Finally, further development of the ATR-SEIRAS technique with enhanced sensitivity, improved time and spatial resolutions will be prospected.

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Electroless deposition of gold thin films on silicon for surface-enhanced infrared spectroelectrochemistry

Cited by 358 publications

References 21 publications

Ethanol oxidation on shape-controlled platinum nanoparticles at different pHs: A combined in situ IR spectroscopy and online mass spectrometry study

Ethanol oxidation on shape-controlled platinum nanoparticles at different pHs: A combined in situ IR spectroscopy and online mass spectrometry study

Electrosynthesized MIPs for transferrin: Plastibodies or nano-filters?

Attenuated Total Reflection Surface-Enhanced Infrared Absorption Spectroscopy: a Powerful Technique for Bioanalysis

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