Immobilizing Au nanoparticles on SiO2 surfaces using octadecylsiloxane monolayers

Roland Resch; Sheffer Meltzer; Thomas Vallant; Helmuth Hoffmann; Bruce E. Koel; Anupam Madhukar; Aristides A.G. Requicha; Peter Will

doi:10.1021/la001296p

Immobilizing Au nanoparticles on SiO₂ surfaces using octadecylsiloxane monolayers

Roland Resch, Sheffer Meltzer, Thomas Vallant, Helmuth Hoffmann, Bruce E. Koel, Anupam Madhukar, Aristides A.G. Requicha, Peter Will

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

Gold nanoparticles were immobilized on silicon dioxide (SiO₂) surfaces by embedding them in a layer of octadecylsiloxane (ODS) and also in SiO₂ layers created by deposition and oxidation of ODS layers. The ODS and the SiO₂ layers form selectively around the nanoparticles. Analysis of the particles after several deposition/oxidation cycles showed a decrease in measured height in accordance with the number of deposited layers. Following one embedding cycle, the nanoparticles could not be moved with the tip of a scanning force microscope operated in dynamic mode, whereas they moved in a controlled fashion prior to the deposition of any layer. Depositing a second set of particles onto an ODS layer in contact with the substrate allowed us to construct a two-particle column by placing one particle directly on top of another one.

Original language	English (US)
Pages (from-to)	5666-5670
Number of pages	5
Journal	Langmuir
Volume	17
Issue number	18
DOIs	https://doi.org/10.1021/la001296p
State	Published - Sep 4 2001
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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10.1021/la001296p

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title = "Immobilizing Au nanoparticles on SiO2 surfaces using octadecylsiloxane monolayers",

abstract = "Gold nanoparticles were immobilized on silicon dioxide (SiO2) surfaces by embedding them in a layer of octadecylsiloxane (ODS) and also in SiO2 layers created by deposition and oxidation of ODS layers. The ODS and the SiO2 layers form selectively around the nanoparticles. Analysis of the particles after several deposition/oxidation cycles showed a decrease in measured height in accordance with the number of deposited layers. Following one embedding cycle, the nanoparticles could not be moved with the tip of a scanning force microscope operated in dynamic mode, whereas they moved in a controlled fashion prior to the deposition of any layer. Depositing a second set of particles onto an ODS layer in contact with the substrate allowed us to construct a two-particle column by placing one particle directly on top of another one.",

author = "Roland Resch and Sheffer Meltzer and Thomas Vallant and Helmuth Hoffmann and Koel, {Bruce E.} and Anupam Madhukar and Requicha, {Aristides A.G.} and Peter Will",

note = "Funding Information: ★ Both authors are supported by ERDF and the Spanish grants TIN2009-14460-C03 and TIN2010-17193.",

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doi = "10.1021/la001296p",

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T1 - Immobilizing Au nanoparticles on SiO2 surfaces using octadecylsiloxane monolayers

AU - Resch, Roland

AU - Meltzer, Sheffer

AU - Vallant, Thomas

AU - Hoffmann, Helmuth

AU - Koel, Bruce E.

AU - Madhukar, Anupam

AU - Requicha, Aristides A.G.

AU - Will, Peter

N1 - Funding Information: ★ Both authors are supported by ERDF and the Spanish grants TIN2009-14460-C03 and TIN2010-17193.

PY - 2001/9/4

Y1 - 2001/9/4

N2 - Gold nanoparticles were immobilized on silicon dioxide (SiO2) surfaces by embedding them in a layer of octadecylsiloxane (ODS) and also in SiO2 layers created by deposition and oxidation of ODS layers. The ODS and the SiO2 layers form selectively around the nanoparticles. Analysis of the particles after several deposition/oxidation cycles showed a decrease in measured height in accordance with the number of deposited layers. Following one embedding cycle, the nanoparticles could not be moved with the tip of a scanning force microscope operated in dynamic mode, whereas they moved in a controlled fashion prior to the deposition of any layer. Depositing a second set of particles onto an ODS layer in contact with the substrate allowed us to construct a two-particle column by placing one particle directly on top of another one.

AB - Gold nanoparticles were immobilized on silicon dioxide (SiO2) surfaces by embedding them in a layer of octadecylsiloxane (ODS) and also in SiO2 layers created by deposition and oxidation of ODS layers. The ODS and the SiO2 layers form selectively around the nanoparticles. Analysis of the particles after several deposition/oxidation cycles showed a decrease in measured height in accordance with the number of deposited layers. Following one embedding cycle, the nanoparticles could not be moved with the tip of a scanning force microscope operated in dynamic mode, whereas they moved in a controlled fashion prior to the deposition of any layer. Depositing a second set of particles onto an ODS layer in contact with the substrate allowed us to construct a two-particle column by placing one particle directly on top of another one.

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ER -

Immobilizing Au nanoparticles on SiO₂ surfaces using octadecylsiloxane monolayers

Abstract

All Science Journal Classification (ASJC) codes

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