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Self-assembly of isotropic colloids into colloidal strings, Bernal spiral-like, and tubular clusters
- Guo, Yong, van Ravensteijn, Bas G. P., Kegel, Willem K.
- Chemical communications 2020 v.56 no.46 pp. 6309-6312
- centrifugation, chemical compounds, chemical reactions, colloids, electrostatic interactions, hydrophobicity, isotropy
- We report the (spontaneous) formation of colloidal strings, Bernal spiral-like, and tubular clusters comprising spherical, isotropically functionalized colloidal particles in an aqueous environment. The formation of colloidal strings and Bernal spiral-like clusters is guided by an interplay between short-ranged hydrophobic attraction and relatively longer-ranged electrostatic repulsion acting between the colloids. When a dispersion of these colloids is densified via centrifugation, well-defined tubular aggregates were observed.