Hydrophobic interactions modulate self-assembly of nanoparticles.
basic_science · Level V
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- Record sourced from PubMed, PMID 23186074.
- Also identified by DOI 10.1021/nn3047605.
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Abstract
Hydrophobic interactions constitute one of the most important types of nonspecific interactions in biological systems, which emerge when water molecules rearrange as two hydrophobic species come close to each other. The prediction of hydrophobic interactions at the level of nanoparticles (Brownian objects) remains challenging because of uncontrolled diffusive motion of the particles. We describe here a general methodology for solvent-induced, reversible self-assembly of gold nanoparticles into 3D clusters with well-controlled sizes. A theoretical description of the process confirmed that hydrophobic interactions are the main driving force behind nanoparticle aggregation.
Medical subject headings
- Hydrophobic and Hydrophilic Interactions
- Nanoparticles