Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Nanoparticle Superlattices with Negative Thermal Expansion (NTE) Coefficients

Journal Article · · Journal of Physical Chemistry. C
In this work, we report on the assembly of gold nanoparticles grafted with poly(ethylene glycol) (PEG–AuNPs) in aqueous solutions into the face-centered cubic superlattice by synchrotron X-ray scattering. At sufficiently high salt concentrations, the lattice constant decreases with increasing temperature, i.e., it exhibits a negative thermal expansion (NTE) coefficient that is 2–4 orders (in magnitude) larger than previously reported in NTE materials. The generality of the effect is demonstrated with different salts and different PEG chain lengths. Theoretical calculations show that PEG–AuNP becomes more insoluble (with the Flory–Huggins parameter χ > (1/2)) as temperature increases through water dehydration, with a decrease in the volume of the superlattice and an increase in the entropy of the system. Implications on the formation of nanoparticle superlattices and NTE properties are also discussed.
Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
AC02-06CH11357; AC02-07CH11358
OSTI ID:
1809248
Alternate ID(s):
OSTI ID: 1806334
OSTI ID: 1787747
Report Number(s):
IS--J 10,498
Journal Information:
Journal of Physical Chemistry. C, Journal Name: Journal of Physical Chemistry. C Journal Issue: 18 Vol. 125; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (41)

Polymeric gels and hydrogels for biomedical and pharmaceutical applications: POLYMERIC GELS AND HYDROGELS journal September 2009
Upper and lower critical solution temperatures in poly (ethylene glycol) solutions journal August 1976
PEGylation, successful approach to drug delivery journal November 2005
Self-Assembly of Colloidal Nanocrystals: From Intricate Structures to Functional Materials journal August 2016
Ion-Specific Interfacial Crystallization of Polymer-Grafted Nanoparticles journal July 2017
Stability and Free Energy of Nanocrystal Chains and Superlattices journal July 2018
Interpolymer Complexation as a Strategy for Nanoparticle Assembly and Crystallization journal December 2018
The Effects of Temperature on the Assembly of Gold Nanoparticle by Interpolymer Complexation journal February 2021
Pressure-Stimulated Supercrystal Formation in Nanoparticle Suspensions journal August 2018
Effect of (Poly)electrolytes on the Interfacial Assembly of Poly(ethylene glycol)-Functionalized Gold Nanoparticles journal January 2019
Unusual Effect of Iodine Ions on the Self-Assembly of Poly(ethylene glycol)-Capped Gold Nanoparticles journal December 2019
Superlattices of Nanocrystals with Polystyrene Ligands: From the Colloidal to Polymer Limit journal October 2019
Assembling Ordered Crystals with Disperse Building Blocks journal July 2019
Interfacial and Bulk Assembly of Anisotropic Gold Nanostructures: Implications for Photonics and Plasmonics journal July 2020
Temperature-Induced Tunable Assembly of Columnar Phases of Nanorods journal April 2020
Pronounced Negative Thermal Expansion from a Simple Structure: Cubic ScF 3 journal November 2010
Structural Transitions in Nanoparticle Assemblies Governed by Competing Nanoscale Forces journal May 2013
Self-Assembling Nanocomposite Tectons journal December 2016
Polymer Stereocomplexation as a Scalable Platform for Nanoparticle Assembly journal December 2019
Phase Diagram Data for Several PEG + Salt Aqueous Biphasic Systems at 25 °C journal September 2003
Preparation of Compact Nanoparticle Clusters from Polyethylene Glycol-Coated Gold Nanoparticles by Fine-Tuning Colloidal Interactions journal February 2015
Polymer brushes at curved surfaces journal December 1993
Role of Competitive PEO−Water and Water−Water Hydrogen Bonding in Aqueous Solution PEO Behavior journal January 2002
Poly( N -isopropylacrylamide) Surfactant-Functionalized Responsive Silver Nanoparticles and Superlattices journal April 2014
Salt Mediated Self-Assembly of Poly(ethylene glycol)-Functionalized Gold Nanorods journal December 2019
Macroscopic and tunable nanoparticle superlattices journal January 2017
Assembling and ordering polymer-grafted nanoparticles in three dimensions journal January 2017
Polymer-guided assembly of inorganic nanoparticles journal January 2020
Small is different: energetic, structural, thermal, and mechanical properties of passivated nanocluster assemblies journal January 2004
PNIPAM microgels for biomedical applications: from dispersed particles to 3D assemblies journal January 2011
The hard sphere diameter of nanocrystals (nanoparticles) journal March 2020
Design principles for photonic crystals based on plasmonic nanoparticle superlattices journal June 2018
Negative thermal expansion and associated anomalous physical properties: review of the lattice dynamics theoretical foundation journal May 2016
Phase Behavior of Nanoparticles Assembled by DNA Linkers journal January 2009
Theory of solvation-induced reentrant phase separation in polymer solutions journal July 1990
Ionic depletion at the crystalline Gibbs layer of PEG-capped gold nanoparticle brushes at aqueous surfaces journal December 2017
Entropic elasticity and negative thermal expansion in a simple cubic crystal journal November 2019
Self-Assembled Plasmonic Nanoparticle Clusters journal May 2010
Negative Thermal Expansion from 0.3 to 1050 Kelvin in ZrW2O8 journal April 1996
Theoretical Study of Molecular Association and Thermoreversible Gelation in Polymers journal July 2002
Two Decades of Negative Thermal Expansion Research: Where Do We Stand? journal June 2012

Similar Records

Effect of Polymer Chain Length on the Superlattice Assembly of Functionalized Gold Nanoparticles
Journal Article · Sun Aug 08 20:00:00 EDT 2021 · Langmuir · OSTI ID:1823631

The Effects of Temperature on the Assembly of Gold Nanoparticle by Interpolymer Complexation
Journal Article · Mon Feb 01 19:00:00 EST 2021 · Journal of Physical Chemistry Letters · OSTI ID:1771105

Binary Superlattices of Gold Nanoparticles in Two Dimensions
Journal Article · Mon Apr 11 20:00:00 EDT 2022 · Journal of Physical Chemistry Letters · OSTI ID:1868474