期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 6, 期 12, 页码 2170-2176出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.5b00717
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资金
- National Natural Science Foundation of China [21273271, 21173253]
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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