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Title: Interfacial Self-Assembly of Polyelectrolyte-Capped Gold Nanoparticles

Journal Article · · Langmuir

Here, we report on pH- and salt-responsive assembly of nanoparticles capped with polyelectrolytes at vapor–liquid interfaces. Two types of alkylthiol-terminated poly(acrylic acid) (PAAs, varying in length) are synthesized and used to functionalize gold nanoparticles (AuNPs) to mimic similar assembly effects of single-stranded DNA-capped AuNPs using synthetic polyelectrolytes. Using surface-sensitive X-ray scattering techniques, including grazing incidence small-angle X-ray scattering (GISAXS) and X-ray reflectivity (XRR), we demonstrate that PAA-AuNPs spontaneously migrate to the vapor–liquid interfaces and form Gibbs monolayers by decreasing the pH of the suspension. The Gibbs monoalyers show chainlike structures of monoparticle thickness. The pH-induced self-assembly is attributed to the protonation of carboxyl groups and to hydrogen bonding between the neighboring PAA-AuNPs. In addition, we show that adding MgCl2 to PAA-AuNP suspensions also induces adsorption at the interface and that the high affinity between magnesium ions and carboxyl groups leads to two- and three-dimensional clusters that yield partial surface coverage and poorer ordering of NPs at the interface. We also examine the assembly of PAA-AuNPs in the presence of a positively charged Langmuir monolayer that promotes the attraction of the negatively charged capped NPs by electrostatic forces. Our results show that synthetic polyelectrolyte-functionalized nanoparticles exhibit interfacial self-assembly behavior similar to that of DNA-functionalized nanoparticles, providing a pathway for nanoparticle assembly in general.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1409368
Report Number(s):
IS-J-9499
Journal Information:
Langmuir, Vol. 33, Issue 43; ISSN 0743-7463
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

References (62)

Fuzzy Nanoassemblies: Toward Layered Polymeric Multicomposites journal August 1997
Nanoengineering of Inorganic and Hybrid Hollow Spheres by Colloidal Templating journal November 1998
Technology-driven layer-by-layer assembly of nanofilms journal April 2015
Reversibly erasable nanoporous anti-reflection coatings from polyelectrolyte multilayers journal September 2002
Catalytic Activity of Palladium Nanoparticles Encapsulated in Spherical Polyelectrolyte Brushes and Core−Shell Microgels journal March 2007
Nanocellulose Aerogels Functionalized by Rapid Layer-by-Layer Assembly for High Charge Storage and Beyond journal September 2013
Nanocoatings onto Arteries via Layer-by-Layer Deposition:  Toward the in Vivo Repair of Damaged Blood Vessels journal June 2003
Cell Surface Engineering with Polyelectrolyte Multilayer Thin Films journal May 2011
Buildup of ultrathin multilayer films by a self-assembly process: III. Consecutively alternating adsorption of anionic and cationic polyelectrolytes on charged surfaces journal April 1992
Multilayered Polymer Nanocapsules Derived from Gold Nanoparticle Templates journal December 2000
From Functional Core/Shell Nanoparticles Prepared via Layer-by-Layer Deposition to Empty Nanospheres journal September 2004
Reversible Tuning of Silver Quantum Dot Monolayers Through the Metal-Insulator Transition journal September 1997
Nanoparticle Assembly and Transport at Liquid-Liquid Interfaces journal January 2003
Large-Scale Synthesis of Nearly Monodisperse CdSe/CdS Core/Shell Nanocrystals Using Air-Stable Reagents via Successive Ion Layer Adsorption and Reaction journal October 2003
Tunable plasmonic lattices of silver nanocrystals journal July 2007
On the origin of the remarkable stability of aqueous foams stabilised by nanoparticles: link with microscopic surface properties journal January 2008
Responsive Plasmonic Assemblies of Amphiphilic Nanocrystals at Oil−Water Interfaces journal September 2010
Nanoparticles at fluid interfaces: Exploiting capping ligands to control adsorption, stability and dynamics journal December 2012
A DNA-based method for rationally assembling nanoparticles into macroscopic materials journal August 1996
Organization of 'nanocrystal molecules' using DNA journal August 1996
A Simple Method for Kinetic Control of DNA-Induced Nanoparticle Assembly journal November 2006
Directed Self-Assembly of Nanoparticles into Macroscopic Materials Using Antibody-Antigen Recognition journal April 1999
Ordered nanoparticle arrays formed on engineered chaperonin protein templates journal November 2002
Core-controlled polymorphism in virus-like particles journal January 2007
DNA-guided crystallization of colloidal nanoparticles journal January 2008
DNA-programmable nanoparticle crystallization journal January 2008
Free-standing nanoparticle superlattice sheets controlled by DNA journal May 2009
DNA-nanoparticle superlattices formed from anisotropic building blocks journal October 2010
Nanoparticle Superlattice Engineering with DNA journal October 2011
A general strategy for the DNA-mediated self-assembly of functional nanoparticles into heterogeneous systems journal October 2013
Importance of the DNA “bond” in programmable nanoparticle crystallization journal October 2014
Prescribed nanoparticle cluster architectures and low-dimensional arrays built using octahedral DNA origami frames journal May 2015
Self-organized architectures from assorted DNA-framed nanoparticles journal June 2016
Diamond family of nanoparticle superlattices journal February 2016
Lattice engineering through nanoparticle–DNA frameworks journal February 2016
Crystalline Gibbs Monolayers of DNA-Capped Nanoparticles at the Air–Liquid Interface journal September 2011
Crystallization of DNA-Capped Gold Nanoparticles in High-Concentration, Divalent Salt Environments journal December 2013
Self-Assembly of DNA Functionalized Gold Nanoparticles at the Liquid-Vapor Interface journal May 2016
Two-Dimensional DNA-Programmable Assembly of Nanoparticles at Liquid Interfaces journal May 2014
Tunable Nanoparticle Arrays at Charged Interfaces journal September 2014
Assembling Bare Au Nanoparticles at Positively Charged Templates journal May 2016
Dynamical Self-Assembly of Nanocrystal Superlattices during Colloidal Droplet Evaporation by in situ Small Angle X-Ray Scattering journal September 2004
Kinetically driven self assembly of highly ordered nanoparticle monolayers journal March 2006
In situ study of the formation mechanism of two-dimensional superlattices from PbSe nanocrystals journal September 2016
Macroscopic and tunable nanoparticle superlattices journal January 2017
Ion-Specific Interfacial Crystallization of Polymer-Grafted Nanoparticles journal July 2017
Using Atom Transfer Radical Polymerization To Amplify Monolayers of Initiators Patterned by Microcontact Printing into Polymer Brushes for Pattern Transfer journal January 2000
Synthesis and Characterization of Ionic Block Copolymer Templated Calcium Phosphate Nanocomposites journal August 2008
Maximizing DNA Loading on a Range of Gold Nanoparticle Sizes journal December 2006
Assembling and ordering polymer-grafted nanoparticles in three dimensions journal January 2017
How does the chain extension of poly (acrylic acid) scale in aqueous solution? A combined study with light scattering and computer simulation journal May 2002
Elements of Modern X-ray Physics book March 2011
Role of Hydrogen Bonding in the pH-Dependent Aggregation of Colloidal Gold Particles Bearing Solution-Facing Carboxylic Acid Groups journal July 2009
pH-Controlled Reversible Assembly of Peptide-Functionalized Gold Nanoparticles journal January 2007
The pH-responsive behaviour of poly(acrylic acid) in aqueous solution is dependent on molar mass journal January 2016
Novel Interparticle Spatial Properties of Hydrogen-Bonding Mediated Nanoparticle Assembly journal January 2003
Nanoparticle Shape Anisotropy Dictates the Collective Behavior of Surface-Bound Ligands journal November 2011
Specificity and Variation of Length Scale over Which Monovalent Halide Ions Neutralize a Charged Interface journal March 2015
Solubility of highly charged anionic polyelectrolytes in presence of multivalent cations: Specific interaction effect journal January 2000
Understanding the self-assembly of charged nanoparticles at the water/oil interface journal January 2006
Interfacial Localization and Voltage-Tunable Arrays of Charged Nanoparticles journal November 2014
Reversible Partitioning of Nanoparticles at an Oil–Water Interface journal September 2016

Cited By (3)

Gold-Aryl nanoparticles coated with polyelectrolytes for adsorption and protection of DNA against nuclease degradation: NANO-GOLD ORGANOMETALLICS FOR ADSORPTION AND PROTECTION OF DNA journal January 2019
Self-Assembled Metal-Phenolic Networks on Emulsions as Low-Fouling and pH-Responsive Particles journal August 2018
Polyethylene-Glycol-Mediated Self-Assembly of Magnetite Nanoparticles at the Liquid/Vapor Interface journal January 2018