Self-assembly of gold nanoparticles at the oil-vapor interface: from mono- to multilayers

Alkylthiol-coated gold nanoparticles spontaneously segregate from dispersion in toluene to the toluene-vapor interface. We show that surface tension drops during segregation with a rate that depends on particle concentration. Mono- and multilayers of particles form depending on particle concentration, time, and temperature. X-ray reflectometry indicates fast monolayer formation and slow multilayer formation. A model that combines diffusion-limited segregation driven by surface energy and heterogeneous agglomeration driven by dispersive van der Waals particle interactions is proposed to describe film formation.

URI

https://doi.org/10.34657/1645
https://oa.tib.eu/renate/handle/123456789/4219

Citation

Born, P., Schön, V., Blum, S., Gerstner, D., Huber, P., & Kraus, T. (2014). Self-assembly of gold nanoparticles at the oil-vapor interface: from mono- to multilayers (Washington D.C. : American Chemical Society). Washington D.C. : American Chemical Society. https://doi.org//10.1021/la503551d

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Physik

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