Binary Superlattices of Gold Nanoparticles in Two Dimensions
Journal Article
·
· Journal of Physical Chemistry Letters
- Ames Lab., and Iowa State Univ., Ames, IA (United States)
- Ames Lab., Ames, IA (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Ames Laboratory, and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, United States
Here, we have created two-dimensional (2D) binary superlattices by cocrystallizing gold nanoparticles (AuNPs) of two distinct sizes into √3 x √3 and 2 x 2 complex binary superlattices, derived from the hexagonal structures of the single components. The building blocks of these binary systems are AuNPs that are functionalized with different chain lengths of poly(ethylene glycol) (PEG). The assembly of these functionalized NPs at the air–water interface is driven by the presence of salt, causing PEG-AuNPs to migrate to the aqueous surface and assemble into a crystalline lattice. We have used liquid surface X-ray reflectivity (XR) and grazing incidence small-angle X-ray scattering (GISAXS) to examine the assembly and crystallization at the liquid interface.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
- Grant/Contract Number:
- AC02-07CH11358; SC0012704
- OSTI ID:
- 1868474
- Alternate ID(s):
- OSTI ID: 1887528
- Report Number(s):
- BNL-223292-2022-JAAM; IS-J-10,807
- Journal Information:
- Journal of Physical Chemistry Letters, Journal Name: Journal of Physical Chemistry Letters Journal Issue: 15 Vol. 13; ISSN 1948-7185
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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