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This content will become publicly available on May 31, 2019

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

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.
Authors:
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
Publication Date:
Report Number(s):
BNL-208008-2018-JAAM
Journal ID: ISSN 2040-3364; NANOHL
Grant/Contract Number:
SC0012704; SC0002136
Type:
Accepted Manuscript
Journal Name:
Nanoscale
Additional Journal Information:
Journal Volume: 10; Journal Issue: 23; Journal ID: ISSN 2040-3364
Publisher:
Royal Society of Chemistry
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY
OSTI Identifier:
1466578
Alternate Identifier(s):
OSTI ID: 1440795