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Publication

Synthesis and Characterization of Janus Gold Nanoparticles

Francesco Stellacci, Randy Patrick Carney, Quy Ong Khac, Javier Reguera Gomez
2012
Journal Articles

Abstract

When gold nanoparticles are coated with binary mixtures of dislike ligand molecules, separation in the ligand shell occurs; if the particles are smaller than a threshold size the separation is solely enthalpy driven leading to the spontaneous formation of Janus particles.

Official source

https://infoscience.epfl.ch/entities/publication/a798bb9a-dfc2-4fde-9a95-1442fa4c343c

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Francesco Stellacci, Randy Patrick Carney, Quy Ong Khac, Javier Reguera Gomez
2012
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/a798bb9a-dfc2-4fde-9a95-1442fa4c343c

About this result

Related concepts (3)

Nanoparticle

A nanoparticle or ultrafine particle is usually defined as a particle of matter that is between 1 and 100 nanometres (nm) in diameter. The term is sometimes used for larger particles, up to 500 nm, or fibers and tubes that are less than 100 nm in only two directions. At the lowest range, metal particles smaller than 1 nm are usually called atom clusters instead.

Colloidal gold

Colloidal gold is a sol or colloidal suspension of nanoparticles of gold in a fluid, usually water. The colloid is coloured usually either wine red (for spherical particles less than 100 nm) or blue-purple (for larger spherical particles or nanorods). Due to their optical, electronic, and molecular-recognition properties, gold nanoparticles are the subject of substantial research, with many potential or promised applications in a wide variety of areas, including electron microscopy, electronics, nanotechnology, materials science, and biomedicine.

Silver nanoparticle

Silver nanoparticles are nanoparticles of silver of between 1 nm and 100 nm in size. While frequently described as being 'silver' some are composed of a large percentage of silver oxide due to their large ratio of surface to bulk silver atoms. Numerous shapes of nanoparticles can be constructed depending on the application at hand. Commonly used silver nanoparticles are spherical, but diamond, octagonal, and thin sheets are also common. Their extremely large surface area permits the coordination of a vast number of ligands.

Related publications (12)

Synthesis and Characterization of Janus Gold Nanoparticles

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Molecular insights into the electrical double layer of colloidal oxide particles obtained through second harmonic scattering

Surface Potential and Interfacial Water Order at the Amorphous TiO2 Nanoparticle/Aqueous Interface

Multidimensional Characterization of Mixed Ligand Nanoparticles Using Small Angle Neutron Scattering