CO2-Expanded Liquid Deposition of Ligand-Stabilized Nanoparticles as Uniform, Wide-Area Nanoparticle Films

Deposition of nanoparticles into uniform, wide-area thin films using CO2 as an antisolvent is presented. Ligand-stabilized silver particles are controllably precipitated from organic solvents by pressurizing and expanding the solution with carbon dioxide. Subsequent addition of carbon dioxide as a d...

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Veröffentlicht in:	Langmuir 2005-03, Vol.21 (6), p.2414-2418
Hauptverfasser:	McLeod, M. Chandler, Kitchens, Christopher L, Roberts, Christopher B
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemistry Colloidal state and disperse state Exact sciences and technology General and physical chemistry Physical and chemical studies. Granulometry. Electrokinetic phenomena
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description	Deposition of nanoparticles into uniform, wide-area thin films using CO2 as an antisolvent is presented. Ligand-stabilized silver particles are controllably precipitated from organic solvents by pressurizing and expanding the solution with carbon dioxide. Subsequent addition of carbon dioxide as a dense supercritical fluid provides for removal of the organic solvent while avoiding the surface tensions common to evaporating solvents that are detrimental to nanoscale assemblies and structures. This brand new CO2-expanded liquid particle deposition technique allows for the targeted deposition of particles and results in more uniform and lower defect metal nanoparticle thin films than are provided by conventional solvent evaporation techniques.
doi_str_mv	10.1021/la047576c
format	Article
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subjects	Chemistry Colloidal state and disperse state Exact sciences and technology General and physical chemistry Physical and chemical studies. Granulometry. Electrokinetic phenomena
title	CO2-Expanded Liquid Deposition of Ligand-Stabilized Nanoparticles as Uniform, Wide-Area Nanoparticle Films
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