Research ArticleNANOMATERIALS

Structural patterns at all scales in a nonmetallic chiral Au133(SR)52 nanoparticle

Science Advances  20 Mar 2015:
Vol. 1, no. 2, e1500045
DOI: 10.1126/sciadv.1500045

You are currently viewing the abstract.

View Full Text

Abstract

Structural ordering is widely present in molecules and materials. However, the organization of molecules on the curved surface of nanoparticles is still the least understood owing to the major limitations of the current surface characterization tools. By the merits of x-ray crystallography, we reveal the structural ordering at all scales in a super robust 133–gold atom nanoparticle protected by 52 thiolate ligands, which is manifested in self-assembled hierarchical patterns starting from the metal core to the interfacial –S–Au–S– ladder-like helical “stripes” and further to the “swirls” of carbon tails. These complex surface patterns have not been observed in the smaller nanoparticles. We further demonstrate that the Au133(SR)52 nanoparticle exhibits nonmetallic features in optical and electron dynamics measurements. Our work uncovers the elegant self-organization strategies in assembling a highly robust nanoparticle and provides a conceptual advance in scientific understanding of pattern structures.

Keywords
  • Structural patterns
  • gold nanoparticle
  • crystal structure
  • shell by shell
  • icosahedron
  • helical stripes
  • swirls
  • non-metallic state
  • chirality

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.

View Full Text

More Like This