Attachment of Gold Nanoparticles to Glassy Carbon Electrodes via a Mercaptobenzene Film

Harnisch, Jennifer A.; Pris, and Andrew D.; Porter, Marc D.

doi:10.1021/ja010564i

Cited by 92 publications

(61 citation statements)

References 30 publications

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“…[449][450][451] The formation of a chemical • Accumulation of Cu(II) with no interference of Pb (II) in tap waters; detection of uranium 431,432 • Detection of Pb(II) 433 • Detection of levetiracetam (antiepileptic drug) 434 • Detection of NADH 435,436 bond has been proved between the surface and the polymer. The electrografting mechanism has been rationalized according to a first flat adsorption of the vinylic monomer 452-457 on the surface followed by an electron transfer process which leads to a radical anion responsible of the formation of the covalent bond.…”

Section: Electrografting By Reduction Of Vinylicsmentioning

confidence: 99%

Electrode Materials (Bulk Materials and Modification)

Walcarius

Etienne

Herzog

et al. 2014

Environmental Analysis by Electrochemical Sensors and Biosensors

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Section: Electrografting By Reduction Of Vinylicsmentioning

confidence: 99%

Electrode Materials (Bulk Materials and Modification)

Walcarius

Etienne

Herzog

et al. 2014

Environmental Analysis by Electrochemical Sensors and Biosensors

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“…9 Another typical method to attach AuNPs to GC surfaces would be to use bridging reagents. [10][11][12][13] In Ref. 10, by using 4-mercaptobenzenediazonium tetrafluoroborate, benzothiol was bonded to GC via electro-reductive attachment, 14 and then AuNPs were successfully attached to the terminal thiols.…”

Section: -9 Because Aucl4mentioning

confidence: 99%

“…[10][11][12][13] In Ref. 10, by using 4-mercaptobenzenediazonium tetrafluoroborate, benzothiol was bonded to GC via electro-reductive attachment, 14 and then AuNPs were successfully attached to the terminal thiols. Alternatively, 4-aminobenzoic acid was covalently bonded to GC via electro-oxidation, and then 4-aminothiophenol was reacted to form peptide bonding while keeping the thiol terminals.…”

Section: -9 Because Aucl4mentioning

confidence: 99%

Surface Observation for Seed-mediated Growth Attachment of Gold Nanoparticles on a Glassy Carbon Substrate

2009

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A seed-mediated growth method for surface modification was applied to the attachment of gold nanoparticles (AuNPs) to glassy carbon (GC) surfaces. By simply immersing a GC plate at first into a seed solution containing 4 nm Au nano-seed particles and then into a growth solution containing HAuCl4, ascorbic acid and cetyltrimethyammonium bromide, AuNPs could be successfully attached to the GC surface via the growth of nanoparticles. A possible control of the size and density of AuNPs on GC was examined by observing surface images with a field-emission scanning electron microscope (FE-SEM) after several preparations with different immersion times. Compared with previous results on the growth of AuNPs on indium tin oxide (ITO) surfaces, it was characteristic that the AuNPs attached to GC surfaces exhibited smaller size and higher density as well as a flatter and non-crystal-like morphology. In addition, for performing the dense attachment of regular nano-sized AuNPs on GC surfaces, immersion for 2 h into the growth solution was sufficient. Longer immersion for 24 h caused an irregular growth of bold Au micro-crystals, while 24 h was necessary in the case of AuNPs on ITO surfaces. Shorter seeding and growth times were found to be effective for a sparse attachment of smaller Au nanoparticles whose size was ca. 20 nm. It was clarified that the seed-mediated growth method for surface modification was valid for fabricating a nanointerface composed of AuNPs on GC surfaces.

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“…[12][13][14][15][16][17][18][19] Monolayerprotected cluster (MPC) molecules, which have the advantages of easy isolation, solubility in common organic solvents without aggregation, and versatile functionalization and derivatization, have been extensively studied and their electrochemical properties were reported. 20 The preparation of MPCs suggested by Schiffrin and coworkers includes the formation of thiol-derivatized gold nanoparticles in a two phase liquid-liquid system.…”

Section: Introductionmentioning

confidence: 99%

Monitoring of the Transfer of Tetrachloroaurate(III) Ions by Thin-layer Electrochemistry and Electrochemical Deposition of Metallic Gold over a Graphite Electrode

Song¹,

Shin²,

Kang

2008

Bulletin of the Korean Chemical Society

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This study demonstrates the electrochemical conversion of the synthetic procedure of monolayer-protected clusters using a thin toluene layer over an edge plane pyrolytic graphite electrode. A thin toluene layer with a thickness of 0.31 mm was coated over the electrode and an immiscible liquid/liquid water/toluene interface was introduced. The transfer of the tetrachloroaurate (AuCl 4 − ) ions into the toluene layer interposed between the aqueous solution and the electrode surface was electrochemically monitored. The AuCl 4 − ions initially could not move through into the toluene layer, showing no reduction wave, but, in the presence of the phase transfer reagent, tetraoctylammonium bromide (TOABr), a cathodic wave at 0.23 V vs. Ag/AgCl was observed, indicating the reduction of the transferred AuCl 4 − ions in the toluene layer. In the presence of dodecanethiol together with TOABr, a self-assembled monolayer was formed over the electro-deposited metallic gold surface. The FE-SEM image of the surface indicates the formation of a highly porous metallic gold surface, rather than individual nanoparticles, over the EPG electrode.

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Attachment of Gold Nanoparticles to Glassy Carbon Electrodes via a Mercaptobenzene Film

Cited by 92 publications

References 30 publications

Electrode Materials (Bulk Materials and Modification)

Electrode Materials (Bulk Materials and Modification)

Surface Observation for Seed-mediated Growth Attachment of Gold Nanoparticles on a Glassy Carbon Substrate

Monitoring of the Transfer of Tetrachloroaurate(III) Ions by Thin-layer Electrochemistry and Electrochemical Deposition of Metallic Gold over a Graphite Electrode

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