AI Article Synopsis
- Surface-curvature effects on the disorder of alkyl capping ligands become significant when the sizes of nanoparticles approach the length of the ligands.
- Sum frequency generation studies of oleic-acid-capped nanoplates reveal that even with much larger facets, there are still noticeable molecular disorders due to the presence of gauche defects.
- The study investigates the facet-edge effect and how increasing facet sizes or arranging nanofacets together can reduce molecular disorder, providing insights into nanoplates' self-assembly behavior.
Article Abstract
Surface-curvature-amplified conformational disorder in alkyl capping ligands has been observed previously when the nanoparticle radii approach the ligand length. Herein, sum frequency generation studies on oleic-acid-capped nanoplates show that even on faceted surfaces with dimensions tens of times greater than the ligand length a significant proportion of gauche defects exist in the capping layer. The molecular disorder on the nanosized facets is attributed to a facet-edge effect, which is diminished when increasing the facet size or assembling the nanofacets side to side. This feature is further explored to probe the self-assembly dynamics of nanoplates.
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| http://dx.doi.org/10.1021/acs.jpclett.5b00717 | DOI Listing |
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