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)

Share

COinS