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Title: Facile synthesis of gold trisoctahedral nanocrystals with controllable sizes and dihedral angles

Journal Article · · Nanoscale
DOI:https://doi.org/10.1039/C8NR02949K· OSTI ID:1466578
ORCiD logo [1];  [2]; ORCiD logo [3];  [4]; ORCiD logo [4]; ORCiD logo [2]; ORCiD logo [5]
  1. Georgia Inst. of Technology, Atlanta, GA (United States). The Wallace H. Coulter Dept. of Biomedical Engineering
  2. Soochow Univ., Suzhou (China). Center for Soft Condensed Matter Physics and Interdisciplinary Research
  3. Georgia Inst. of Technology, Atlanta, GA (United States). School of Chemistry and Biochemistry
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
  5. Georgia Inst. of Technology, Atlanta, GA (United States). The Wallace H. Coulter Dept. of Biomedical Engineering, and School of Chemistry and Biochemistry

Shape-controlled synthesis of Au nanocrystals is of paramount importance to their applications in plasmonics, catalysis, and nanomedicine. While the synthesis of Au nanocrystals enclosed by low-index facets has been greatly advanced over the past two decades, only limited progress has been made for their high-index counterparts. Here in this paper we report a robust route to the facile synthesis of Au trisoctahedral nanocrystals enclosed by high-index facets. Unlike the previously reported methods, our synthesis was conducted at room temperature, together with the introduction a new Au(III) precursor that was much harder to reduce than AuCl4–. In the setting of seed-mediated growth, the trisoctahedral nanocrystals could be readily prepared with sizes controllable from 20–80 nm and dihedral angles tunable in the range of 120–180 degrees. We further used computational modeling to demonstrate that the surface-functionalized Au trisoctahedral nanocrystal could outperform its spherical counterpart in terms of endocytic efficacy under identical conditions.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
Grant/Contract Number:
SC0012704; SC0002136
OSTI ID:
1466578
Alternate ID(s):
OSTI ID: 1440795
Report Number(s):
BNL-208008-2018-JAAM; NANOHL
Journal Information:
Nanoscale, Vol. 10, Issue 23; ISSN 2040-3364
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

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Tailoring the Size and Shape of Colloidal Noble Metal Nanocrystals as a Valuable Tool in Catalysis journal April 2019

Figures / Tables (7)