Ordering Polymer‐Grafted Nanoparticles at Oil–Air Interfaces under Magnetic Fields

Liu, Siqi; Wang, Haoyu; Akcora, Pinar

doi:10.1002/macp.201800012

Title: Ordering Polymer‐Grafted Nanoparticles at Oil–Air Interfaces under Magnetic Fields

Abstract

Abstract Polymer‐grafted magnetic nanoparticles at oil–air interfaces are examined to reveal the role of chain length and anisotropy on particle packing order in thin films. It is found that particles grafted with intermediate chain lengths and sparse grafting densities exhibit enhanced packing order with increasing magnetic field strength. Voronoi tessellation results present an increase in the cell area distribution of these samples, suggesting that chain conformations are affected. For the longest graft length, particles become more disordered under magnetic fields. It is proposed that fluctuations in the bridged chains rearrange particles into less ordered packing with field application and the mechanism of packing order differs for varying graft chain lengths. Grafting anisotropy is found to determine the spatial nanoparticle organization in assembled monolayers.

Authors:

Liu, Siqi ^[1]; Wang, Haoyu ^[1];

^[1]

Department of Chemical Engineering and Materials Science Castle Point on Hudson Stevens Institute of Technology Hoboken NJ 07030 USA

Publication Date:: Thu Apr 19 00:00:00 EDT 2018

Sponsoring Org.:: USDOE

OSTI Identifier:: 1433766

Grant/Contract Number:: DE‐SC0012704

Resource Type:: Publisher's Accepted Manuscript

Journal Name:: Macromolecular Chemistry and Physics

Additional Journal Information:: Journal Name: Macromolecular Chemistry and Physics Journal Volume: 219 Journal Issue: 11; Journal ID: ISSN 1022-1352

Publisher:: Wiley Blackwell (John Wiley & Sons)

Country of Publication:: Germany

Language:: English

Citation Formats


                    Liu, Siqi, Wang, Haoyu, and Akcora, Pinar. Ordering Polymer‐Grafted Nanoparticles at Oil–Air Interfaces under Magnetic Fields.  Germany: N. p., 2018. 
Web.  doi:10.1002/macp.201800012.

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                    Liu, Siqi, Wang, Haoyu, & Akcora, Pinar. Ordering Polymer‐Grafted Nanoparticles at Oil–Air Interfaces under Magnetic Fields.  Germany.  https://doi.org/10.1002/macp.201800012

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                    Liu, Siqi, Wang, Haoyu, and Akcora, Pinar. Thu .  
"Ordering Polymer‐Grafted Nanoparticles at Oil–Air Interfaces under Magnetic Fields".  Germany.  https://doi.org/10.1002/macp.201800012.

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@article{osti_1433766,

  title        = {Ordering Polymer‐Grafted Nanoparticles at Oil–Air Interfaces under Magnetic Fields},

  author       = {Liu, Siqi and Wang, Haoyu and Akcora, Pinar},

  abstractNote = {Abstract Polymer‐grafted magnetic nanoparticles at oil–air interfaces are examined to reveal the role of chain length and anisotropy on particle packing order in thin films. It is found that particles grafted with intermediate chain lengths and sparse grafting densities exhibit enhanced packing order with increasing magnetic field strength. Voronoi tessellation results present an increase in the cell area distribution of these samples, suggesting that chain conformations are affected. For the longest graft length, particles become more disordered under magnetic fields. It is proposed that fluctuations in the bridged chains rearrange particles into less ordered packing with field application and the mechanism of packing order differs for varying graft chain lengths. Grafting anisotropy is found to determine the spatial nanoparticle organization in assembled monolayers.},

  doi          = {10.1002/macp.201800012},

  journal      = {Macromolecular Chemistry and Physics},

  number       = 11,

  volume       = 219,

  place        = {Germany},

  year         = {Thu Apr 19 00:00:00 EDT 2018},

  month        = {Thu Apr 19 00:00:00 EDT 2018}

}

Copy to clipboard

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Title: Ordering Polymer‐Grafted Nanoparticles at Oil–Air Interfaces under Magnetic Fields

Abstract

Citation Formats

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Assembly of Polymer-Grafted Magnetic Nanoparticles in Polymer Melts journal, April 2012

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Effect of Ionic Groups on Polymer-Grafted Magnetic Nanoparticle Assemblies journal, March 2014

Effect of Polymer-Graft Modification on the Order Formation in Particle Assembly Structures journal, May 2013

Computational modeling and simulation of nanoparticle self-assembly in polymeric systems: Structures, properties and external field effects journal, February 2013

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Plasmonic Ruler at the Liquid–Liquid Interface journal, August 2012

Isostructural solid–solid phase transition in monolayers of soft core–shell particles at fluid interfaces: structure and mechanics journal, January 2016

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Stability of Polymer Grafted Nanoparticle Monolayers: Impact of Architecture and Polymer–Substrate Interactions on Dewetting journal, November 2016

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Tolerance to structural disorder and tunable mechanical behavior in self-assembled superlattices of polymer-grafted nanocrystals journal, February 2017

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Core–shell nanoparticle monolayers at planar liquid–liquid interfaces: effects of polymer architecture on the interface microstructure journal, January 2013

Preparation of Ordered Monolayers of Polymer Grafted Nanoparticles: Impact of Architecture, Concentration, and Substrate Surface Energy journal, February 2016

Capillarity-induced directed self-assembly of patchy hexagram particles at the air–water interface journal, January 2016

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Compression of hard core–soft shell nanoparticles at liquid–liquid interfaces: influence of the shell thickness journal, January 2017

Structure and Entanglement Factors on Dynamics of Polymer-Grafted Nanoparticles journal, April 2016

Assembly of Nanoparticles at Liquid Interfaces: Crowding and Ordering
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Assembly of Polymer-Grafted Magnetic Nanoparticles in Polymer Melts
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Tolerance to structural disorder and tunable mechanical behavior in self-assembled superlattices of polymer-grafted nanocrystals
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