Tolerance to structural disorder and tunable mechanical behavior in self-assembled superlattices of polymer-grafted nanocrystals
Abstract
Large, freestanding membranes with remarkably high elastic modulus ( > 10 GPa) have been fabricated through the self-Assembly of ligand-stabilized inorganic nanocrystals, even though these nanocrystals are connected only by soft organic ligands (e.g., dodecanethiol or DNA) that are not cross-linked or entangled. Recent developments in the synthesis of polymer-grafted nanocrystals have greatly expanded the library of accessible superlattice architectures,which allows superlattice mechanical behavior to be linked to specific structural features. Here, colloidal self-Assembly is used to organize polystyrene-grafted Au nanocrystals at a fluid interface to form ordered solids with sub-10-nm periodic features. We used thin-film buckling and nanoindentation to evaluate the mechanical behavior of polymer-grafted nanocrystal superlattices while exploring the role of polymer structural conformation, nanocrystal packing, and superlattice dimensions. Superlattices containing 3-20 vol % Au are found to have an elastic modulus of ~6-19 GPa, and hardness of ~120-170 MPa. We also found that rapidly self-Assembled superlattices have the highest elastic modulus, despite containing significant structural defects. Polymer extension, interdigitation, and grafting density are determined to be critical parameters that govern superlattice elastic and plastic deformation.
- Authors:
-
- Department of Chemistry, University of California, Berkeley, CA 94720,
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720,
- Hysitron Inc., Minneapolis, MN 55344,
- Department of Nuclear Engineering, University of California, Berkeley, CA 94720,
- Department of Chemistry, University of California, Berkeley, CA 94720,, Department of Materials Science and Engineering, University of California, Berkeley, CA 94720,, Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720,, Kavli Energy NanoScience Institute, University of California, Berkeley and Lawrence Berkeley National Laboratory, Berkeley, CA 94720
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1345069
- Alternate Identifier(s):
- OSTI ID: 1413721
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Published Article
- Journal Name:
- Proceedings of the National Academy of Sciences of the United States of America
- Additional Journal Information:
- Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Volume: 114 Journal Issue: 11; Journal ID: ISSN 0027-8424
- Publisher:
- Proceedings of the National Academy of Sciences
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; elasticity; buckling; nanocomposite; thin film; nanoindentation
Citation Formats
Gu, X. Wendy, Ye, Xingchen, Koshy, David M., Vachhani, Shraddha, Hosemann, Peter, and Alivisatos, A. Paul. Tolerance to structural disorder and tunable mechanical behavior in self-assembled superlattices of polymer-grafted nanocrystals. United States: N. p., 2017.
Web. doi:10.1073/pnas.1618508114.
Gu, X. Wendy, Ye, Xingchen, Koshy, David M., Vachhani, Shraddha, Hosemann, Peter, & Alivisatos, A. Paul. Tolerance to structural disorder and tunable mechanical behavior in self-assembled superlattices of polymer-grafted nanocrystals. United States. https://doi.org/10.1073/pnas.1618508114
Gu, X. Wendy, Ye, Xingchen, Koshy, David M., Vachhani, Shraddha, Hosemann, Peter, and Alivisatos, A. Paul. Mon .
"Tolerance to structural disorder and tunable mechanical behavior in self-assembled superlattices of polymer-grafted nanocrystals". United States. https://doi.org/10.1073/pnas.1618508114.
@article{osti_1345069,
title = {Tolerance to structural disorder and tunable mechanical behavior in self-assembled superlattices of polymer-grafted nanocrystals},
author = {Gu, X. Wendy and Ye, Xingchen and Koshy, David M. and Vachhani, Shraddha and Hosemann, Peter and Alivisatos, A. Paul},
abstractNote = {Large, freestanding membranes with remarkably high elastic modulus ( > 10 GPa) have been fabricated through the self-Assembly of ligand-stabilized inorganic nanocrystals, even though these nanocrystals are connected only by soft organic ligands (e.g., dodecanethiol or DNA) that are not cross-linked or entangled. Recent developments in the synthesis of polymer-grafted nanocrystals have greatly expanded the library of accessible superlattice architectures,which allows superlattice mechanical behavior to be linked to specific structural features. Here, colloidal self-Assembly is used to organize polystyrene-grafted Au nanocrystals at a fluid interface to form ordered solids with sub-10-nm periodic features. We used thin-film buckling and nanoindentation to evaluate the mechanical behavior of polymer-grafted nanocrystal superlattices while exploring the role of polymer structural conformation, nanocrystal packing, and superlattice dimensions. Superlattices containing 3-20 vol % Au are found to have an elastic modulus of ~6-19 GPa, and hardness of ~120-170 MPa. We also found that rapidly self-Assembled superlattices have the highest elastic modulus, despite containing significant structural defects. Polymer extension, interdigitation, and grafting density are determined to be critical parameters that govern superlattice elastic and plastic deformation.},
doi = {10.1073/pnas.1618508114},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 11,
volume = 114,
place = {United States},
year = {Mon Feb 27 00:00:00 EST 2017},
month = {Mon Feb 27 00:00:00 EST 2017}
}
https://doi.org/10.1073/pnas.1618508114
Web of Science
Works referenced in this record:
Freely suspended nanocomposite membranes as highly sensitive sensors
journal, September 2004
- Jiang, Chaoyang; Markutsya, Sergiy; Pikus, Yuri
- Nature Materials, Vol. 3, Issue 10
Polymer nanotechnology: Nanocomposites
journal, July 2008
- Paul, D. R.; Robeson, L. M.
- Polymer, Vol. 49, Issue 15
Anisotropic self-assembly of spherical polymer-grafted nanoparticles
journal, March 2009
- Akcora, Pinar; Liu, Hongjun; Kumar, Sanat K.
- Nature Materials, Vol. 8, Issue 4
Elastic Moduli Inheritance and the Weakest Link in Bulk Metallic Glasses
journal, February 2012
- Ma, D.; Stoica, A. D.; Wang, X. -L.
- Physical Review Letters, Vol. 108, Issue 8
The Halpin-Tsai equations: A review
journal, May 1976
- Affdl, J. C. Halpin; Kardos, J. L.
- Polymer Engineering and Science, Vol. 16, Issue 5
Surface chemistry mediates thermal transport in three-dimensional nanocrystal arrays
journal, March 2013
- Ong, Wee-Liat; Rupich, Sara M.; Talapin, Dmitri V.
- Nature Materials, Vol. 12, Issue 5
Toughening fragile matter: mechanical properties of particle solids assembled from polymer-grafted hybrid particles synthesized by ATRP
journal, January 2012
- Choi, Jihoon; Hui, Chin Ming; Pietrasik, Joanna
- Soft Matter, Vol. 8, Issue 15
Glass Transition Temperatures of High-Density Poly(methyl methacrylate) Brushes
journal, July 2002
- Yamamoto, Shinpei; Tsujii, Yoshinobu; Fukuda, Takeshi
- Macromolecules, Vol. 35, Issue 16
Star shaped polymers : a model for the conformation and its concentration dependence
journal, January 1982
- Daoud, M.; Cotton, J. P.
- Journal de Physique, Vol. 43, Issue 3
Structural diversity in binary superlattices self-assembled from polymer-grafted nanocrystals
journal, December 2015
- Ye, Xingchen; Zhu, Chenhui; Ercius, Peter
- Nature Communications, Vol. 6, Issue 1
A Universal Criterion for Plastic Yielding of Metallic Glasses with a Temperature Dependence
journal, November 2005
- Johnson, W. L.; Samwer, K.
- Physical Review Letters, Vol. 95, Issue 19
Deposition of Wafer-Scale Single-Component and Binary Nanocrystal Superlattice Thin Films Via Dip-Coating
journal, March 2015
- Gaulding, E. Ashley; Diroll, Benjamin T.; Goodwin, E. D.
- Advanced Materials, Vol. 27, Issue 18
Length Scales at which Classical Elasticity Breaks Down for Various Materials
journal, May 2007
- Maranganti, R.; Sharma, P.
- Physical Review Letters, Vol. 98, Issue 19
Mechanically Robust and Self-Healable Superlattice Nanocomposites by Self-Assembly of Single-Component “Sticky” Polymer-Grafted Nanoparticles
journal, May 2015
- Williams, Gregory A.; Ishige, Ryohei; Cromwell, Olivia R.
- Advanced Materials, Vol. 27, Issue 26
Fabrication and Mechanical Properties of Large-Scale Freestanding Nanoparticle Membranes
journal, June 2010
- He, Jinbo; Kanjanaboos, Pongsakorn; Frazer, N. Laszlo
- Small, Vol. 6, Issue 13
Strong Resistance to Bending Observed for Nanoparticle Membranes
journal, September 2015
- Wang, Yifan; Liao, Jianhui; McBride, Sean P.
- Nano Letters, Vol. 15, Issue 10
Polymer brushes at curved surfaces
journal, December 1993
- Wijmans, C. M.; Zhulina, E. B.
- Macromolecules, Vol. 26, Issue 26
Bernoulli–Euler beam model based on a modified couple stress theory
journal, September 2006
- Park, S. K.; Gao, X-L
- Journal of Micromechanics and Microengineering, Vol. 16, Issue 11
Suspensions of Silica Particles Grafted with Concentrated Polymer Brush: Effects of Graft Chain Length on Brush Layer Thickness and Colloidal Crystallization
journal, December 2007
- Ohno, Kohji; Morinaga, Takashi; Takeno, Satoshi
- Macromolecules, Vol. 40, Issue 25
Impact of molecular mass on the elastic modulus of thin polystyrene films
journal, August 2010
- Torres, Jessica M.; Stafford, Christopher M.; Vogt, Bryan D.
- Polymer, Vol. 51, Issue 18
Small is different: energetic, structural, thermal, and mechanical properties of passivated nanocluster assemblies
journal, January 2004
- Landman, Uzi; Luedtke, W. D.
- Faraday Discussions, Vol. 125
Role of material microstructure in plate stiffness with relevance to microcantilever sensors
journal, April 2005
- McFarland, Andrew W.; Colton, Jonathan S.
- Journal of Micromechanics and Microengineering, Vol. 15, Issue 5
Nonisotropic Self-Organization of Single-Component Hairy Nanoparticle Assemblies
journal, July 2013
- Koerner, Hilmar; Drummy, Lawrence F.; Benicewicz, Brian
- ACS Macro Letters, Vol. 2, Issue 8
Enhanced Thermopower in PbSe Nanocrystal Quantum Dot Superlattices
journal, August 2008
- Wang, Robert Y.; Feser, Joseph P.; Lee, Jong-Soo
- Nano Letters, Vol. 8, Issue 8, p. 2283-2288
Ultrathin Cross-Linked Nanoparticle Membranes
journal, October 2003
- Lin, Yao; Skaff, Habib; Böker, Alexander
- Journal of the American Chemical Society, Vol. 125, Issue 42
Tailoring structure formation and mechanical properties of particle brush solids via homopolymer addition
journal, January 2016
- Schmitt, Michael; Hui, Chin Ming; Urbach, Zachary
- Faraday Discussions, Vol. 186
Organically linked iron oxide nanoparticle supercrystals with exceptional isotropic mechanical properties
journal, February 2016
- Dreyer, Axel; Feld, Artur; Kornowski, Andreas
- Nature Materials, Vol. 15, Issue 5
The Role of Order, Nanocrystal Size, and Capping Ligands in the Collective Mechanical Response of Three-Dimensional Nanocrystal Solids
journal, July 2010
- Podsiadlo, Paul; Krylova, Galyna; Lee, Byeongdu
- Journal of the American Chemical Society, Vol. 132, Issue 26
The elastic properties, elastic models and elastic perspectives of metallic glasses
journal, April 2012
- Wang, Wei Hua
- Progress in Materials Science, Vol. 57, Issue 3
Synthesis and Characterization of Monodisperse Nanocrystals and Close-Packed Nanocrystal Assemblies
journal, August 2000
- Murray, C. B.; Kagan, C. R.; Bawendi, M. G.
- Annual Review of Materials Science, Vol. 30, Issue 1, p. 545-610
Elastic membranes of close-packed nanoparticle arrays
journal, July 2007
- Mueggenburg, Klara E.; Lin, Xiao-Min; Goldsmith, Rodney H.
- Nature Materials, Vol. 6, Issue 9
Self-Assembled Nanoparticle Drumhead Resonators
journal, April 2013
- Kanjanaboos, Pongsakorn; Lin, Xiao-Min; Sader, John E.
- Nano Letters, Vol. 13, Issue 5
Viscoplastic and Granular Behavior in Films of Colloidal Nanocrystals
journal, January 2007
- Lee, Dongyun; Jia, Shengguo; Banerjee, Sarbajit
- Physical Review Letters, Vol. 98, Issue 2
Synergism in binary nanocrystal superlattices leads to enhanced p-type conductivity in self-assembled PbTe/Ag2Te thin films
journal, January 2007
- Urban, Jeffrey J.; Talapin, Dmitri V.; Shevchenko, Elena V.
- Nature Materials, Vol. 6, Issue 2, p. 115-121
Mechanical Properties of Face-Centered Cubic Supercrystals of Nanocrystals
journal, July 2010
- Tam, Enrico; Podsiadlo, Paul; Shevchenko, Elena
- Nano Letters, Vol. 10, Issue 7
Flexible Particle Array Structures by Controlling Polymer Graft Architecture
journal, September 2010
- Choi, Jihoon; Dong, Hongchen; Matyjaszewski, Krzysztof
- Journal of the American Chemical Society, Vol. 132, Issue 36
Effects of the substrate on the determination of thin film mechanical properties by nanoindentation
journal, January 2002
- Saha, Ranjana; Nix, William D.
- Acta Materialia, Vol. 50, Issue 1
Free-standing nanoparticle superlattice sheets controlled by DNA
journal, May 2009
- Cheng, Wenlong; Campolongo, Michael J.; Cha, Judy J.
- Nature Materials, Vol. 8, Issue 6
Subnanometre ligand-shell asymmetry leads to Janus-like nanoparticle membranes
journal, June 2015
- Jiang, Zhang; He, Jinbo; Deshmukh, Sanket A.
- Nature Materials, Vol. 14, Issue 9
A buckling-based metrology for measuring the elastic moduli of polymeric thin films
journal, July 2004
- Stafford, Christopher M.; Harrison, Christopher; Beers, Kathryn L.
- Nature Materials, Vol. 3, Issue 8, p. 545-550
Tunable Plasmonic Coupling in Self-Assembled Binary Nanocrystal Superlattices Studied by Correlated Optical Microspectrophotometry and Electron Microscopy
journal, February 2013
- Ye, Xingchen; Chen, Jun; Diroll, Benjamin T.
- Nano Letters, Vol. 13, Issue 3
High Strength, Molecularly Thin Nanoparticle Membranes
journal, December 2014
- Salerno, K. Michael; Bolintineanu, Dan S.; Lane, J. Matthew D.
- Physical Review Letters, Vol. 113, Issue 25
Self-Assembled Binary Superlattices of CdSe and Au Nanocrystals and Their Fluorescence Properties
journal, March 2008
- Shevchenko, Elena V.; Ringler, Moritz; Schwemer, Alexander
- Journal of the American Chemical Society, Vol. 130, Issue 11
Conformational Transitions of Spherical Polymer Brushes: Synthesis, Characterization, and Theory
journal, February 2010
- Dukes, Douglas; Li, Yu; Lewis, Sarah
- Macromolecules, Vol. 43, Issue 3