Radical mechanism of a place-exchange reaction of Au nanoparticles

P. Ionita; V. Chechik; B.C. Gilbert

doi:10.1002/anie.200500518

Radical mechanism of a place-exchange reaction of Au nanoparticles

P. Ionita, V. Chechik, B.C. Gilbert

Chemistry

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

Abstract

Spin-trapping experiments show the formation of sulfur-centered radicals during a ligand-exchange reaction between Ph3P-protected Au nanoparticles and alkanethiols in air (see picture). Oxidation of the alkanethiols by molecular O2 adsorbed on the nanoparticles is proposed as the key step. The feasibility of such a process is demonstrated by the Au-nanoparticle-catalyzed oxidation of BH4- and tBuOOH with air.

Original language	English
Pages (from-to)	3720-3722
Number of pages	2
Journal	Angewandte Chemie International Edition
Volume	44
Issue number	24
DOIs	https://doi.org/10.1002/anie.200500518
Publication status	Published - 4 May 2005

Keywords

GOLD NANOPARTICLES
LIGAND-EXCHANGE
AU NANOPARTICLES
CLUSTERS
DYNAMICS
DISULFIDE
REDUCTION
OXIDATION
SULFUR
OXYGEN

Access to Document

10.1002/anie.200500518

http://dx.doi.org/10.1002/anie.200500518

Cite this

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title = "Radical mechanism of a place-exchange reaction of Au nanoparticles",

abstract = "Spin-trapping experiments show the formation of sulfur-centered radicals during a ligand-exchange reaction between Ph3P-protected Au nanoparticles and alkanethiols in air (see picture). Oxidation of the alkanethiols by molecular O2 adsorbed on the nanoparticles is proposed as the key step. The feasibility of such a process is demonstrated by the Au-nanoparticle-catalyzed oxidation of BH4- and tBuOOH with air.",

keywords = "GOLD NANOPARTICLES, LIGAND-EXCHANGE, AU NANOPARTICLES, CLUSTERS, DYNAMICS, DISULFIDE, REDUCTION, OXIDATION, SULFUR, OXYGEN",

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AU - Chechik, V.

AU - Gilbert, B.C.

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N2 - Spin-trapping experiments show the formation of sulfur-centered radicals during a ligand-exchange reaction between Ph3P-protected Au nanoparticles and alkanethiols in air (see picture). Oxidation of the alkanethiols by molecular O2 adsorbed on the nanoparticles is proposed as the key step. The feasibility of such a process is demonstrated by the Au-nanoparticle-catalyzed oxidation of BH4- and tBuOOH with air.

AB - Spin-trapping experiments show the formation of sulfur-centered radicals during a ligand-exchange reaction between Ph3P-protected Au nanoparticles and alkanethiols in air (see picture). Oxidation of the alkanethiols by molecular O2 adsorbed on the nanoparticles is proposed as the key step. The feasibility of such a process is demonstrated by the Au-nanoparticle-catalyzed oxidation of BH4- and tBuOOH with air.

KW - GOLD NANOPARTICLES

KW - LIGAND-EXCHANGE

KW - AU NANOPARTICLES

KW - CLUSTERS

KW - DYNAMICS

KW - DISULFIDE

KW - REDUCTION

KW - OXIDATION

KW - SULFUR

KW - OXYGEN

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DO - 10.1002/anie.200500518

M3 - Article

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JO - Angewandte Chemie International Edition

JF - Angewandte Chemie International Edition

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