Title
Interpolymer Complexation as a Strategy for Nanoparticle Assembly and Crystallization
Publication Date
12-7-2018
Department
Ames Laboratory; Physics and Astronomy; Materials Science and Engineering; Chemical and Biological Engineering, Neuroscience
Campus Units
Chemical and Biological Engineering, Materials Science and Engineering, Physics and Astronomy, Neuroscience, Ames Laboratory
OSTI ID+
1492299
Report Number
IS-J 9858
DOI
10.1021/acs.jpcc.8b09647
Journal Title
Journal of Physical Chemistry C
Volume Number
123
Issue Number
1
First Page
836
Last Page
840
Abstract
Controlled self-assembly of nanoparticles into ordered structures is a major step to fabricating nanotechnology-based devices. Here, we report on the self-assembly of high quality superlattices of nanoparticles in aqueous suspensions induced via interpolymer complexation. Using small-angle X-ray scattering, we demonstrate that the NPs crystallize into superlattices of face-centered-cubic symmetry, initially driven by hydrogen bonding and subsequently by van der Waals forces between the complexed coronas of hydrogen-bonded polymers. We show that the lattice constant and crystal quality can be tuned by polymer concentration, suspension pH, and the length of polymer chains. Interpolymer complexation to assemble nanoparticles is scalable, inexpensive, versatile, and general.
DOE Contract Number(s)
AC02-07CH11358
Language
en
Department of Energy Subject Categories
42 ENGINEERING
Publisher
Iowa State University Digital Repository, Ames IA (United States)
