Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Plasmon interactions between gold nanoparticles in aqueous solution with controlled spatial separation. / Sendroiu, I.E.; Mertens, S.F.L.; Schiffrin, D.J.
In: Physical Chemistry Chemical Physics, Vol. 8, No. 12, 2006, p. 1430-1436.Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Plasmon interactions between gold nanoparticles in aqueous solution with controlled spatial separation
AU - Sendroiu, I.E.
AU - Mertens, S.F.L.
AU - Schiffrin, D.J.
PY - 2006
Y1 - 2006
N2 - The effects of interparticle distance on the UV-visible absorption spectrum of gold nanocrystals aggregates in aqueous solution have been investigated. The aggregates were produced by ion-templated chelation of ω- mercaptocarboxylic acid ligands covalently attached to the nanoparticles surface. Variation of the ligand chain length provides control over the interparticle separation in the aggregates. The UV-visible spectra consist typically of a single particle band and a secondary band at higher wavelengths associated with the formation of aggregates in solution. The position of the latter depends on interparticle separation up to distances of ∼8 nm, in accordance with existing models. Potential applications therefore include distance sensitive labels or proximity probes. Conversely, variation of the ligand length allows the preparation of nanostuctured materials with tuned optical properties. © the Owner Societies 2006.
AB - The effects of interparticle distance on the UV-visible absorption spectrum of gold nanocrystals aggregates in aqueous solution have been investigated. The aggregates were produced by ion-templated chelation of ω- mercaptocarboxylic acid ligands covalently attached to the nanoparticles surface. Variation of the ligand chain length provides control over the interparticle separation in the aggregates. The UV-visible spectra consist typically of a single particle band and a secondary band at higher wavelengths associated with the formation of aggregates in solution. The position of the latter depends on interparticle separation up to distances of ∼8 nm, in accordance with existing models. Potential applications therefore include distance sensitive labels or proximity probes. Conversely, variation of the ligand length allows the preparation of nanostuctured materials with tuned optical properties. © the Owner Societies 2006.
KW - gold
KW - nanomaterial
KW - thiol derivative
KW - article
KW - chemical structure
KW - chemistry
KW - crystallization
KW - electron microscopy
KW - Raman spectrometry
KW - Crystallization
KW - Gold
KW - Microscopy, Electron
KW - Models, Molecular
KW - Nanostructures
KW - Spectrum Analysis, Raman
KW - Sulfhydryl Compounds
U2 - 10.1039/b518112g
DO - 10.1039/b518112g
M3 - Journal article
VL - 8
SP - 1430
EP - 1436
JO - Physical Chemistry Chemical Physics
JF - Physical Chemistry Chemical Physics
SN - 1463-9076
IS - 12
ER -