Journal
LANGMUIR
Volume 25, Issue 13, Pages 7193-7195Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la900650d
Keywords
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Funding
- Department of Energy Basic Energy Science [ER46517]
- Cornell Center for Materials Research [DMR-0520404]
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The synthesis and assembly of mildly fused asymmetric polystyrene/silica dimers confined to gap heights intermediate to an in-plane monolayer and an out-of-plane monolayer are explored. Using real-space confocal microscopy, we show that structures evolve from an oblique two-dimensional (2D) phase to a quasi-2D rotator, and finally to an upright hexagonally close-packed monolayer. The existence of the novel quasi-2D state, where out-of-plane motion is allowed, highlights the critical role that confinement dimensionality plays on the nature of ordering in complex colloidal systems.
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