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Gold nanoparticle membranes as large-area surface monolayers

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2010

Autor:innen

Ciesa, Flavio

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https://doi.org/10.1016/j.jcis.2010.02.030
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Journal of Colloid and Interface Science. Elsevier. 2010, 346(1), pp. 1-7. ISSN 0021-9797. eISSN 1095-7103. Available under: doi: 10.1016/j.jcis.2010.02.030

Zusammenfassung

An aqueous suspension of gold nanoparticles of sizes from 20 to 90 nm can be conjugated with mercaptosuccinic acid and exposed to a second phase of toluene containing an electrostatic coupler, tetraoctylammonium bromide, to organize the gold particles at the interface between water and toluene. The particles have an amphiphilic character similarly to Janus beads. The thus formed membrane can be transferred to a solid surface to yield centimeter-sized densely packed particle layers. We show that by changing the coupler concentration, the particle distances can be tailored, which modifies the optical properties.

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Fachgebiet (DDC)
530 Physik

Schlagwörter

Gold nanoparticles; Phase transfer; Langmuir layer; Plasmon resonance; SERS

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ISO 690CIESA, Flavio, Anton PLECH, 2010. Gold nanoparticle membranes as large-area surface monolayers. In: Journal of Colloid and Interface Science. Elsevier. 2010, 346(1), pp. 1-7. ISSN 0021-9797. eISSN 1095-7103. Available under: doi: 10.1016/j.jcis.2010.02.030
BibTex
@article{Ciesa2010-06-01nanop-51591,
  year={2010},
  doi={10.1016/j.jcis.2010.02.030},
  title={Gold nanoparticle membranes as large-area surface monolayers},
  number={1},
  volume={346},
  issn={0021-9797},
  journal={Journal of Colloid and Interface Science},
  pages={1--7},
  author={Ciesa, Flavio and Plech, Anton}
}
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    <dcterms:abstract xml:lang="eng">An aqueous suspension of gold nanoparticles of sizes from 20 to 90 nm can be conjugated with mercaptosuccinic acid and exposed to a second phase of toluene containing an electrostatic coupler, tetraoctylammonium bromide, to organize the gold particles at the interface between water and toluene. The particles have an amphiphilic character similarly to Janus beads. The thus formed membrane can be transferred to a solid surface to yield centimeter-sized densely packed particle layers. We show that by changing the coupler concentration, the particle distances can be tailored, which modifies the optical properties.</dcterms:abstract>
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