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Title: Gelation of plasmonic metal oxide nanocrystals by polymer-induced depletion attractions

Abstract

Significance Self-supported gelation of optically active nanocrystals offers a modular pathway to harness optoelectronic functionality in multiscale materials by directly controlling volume fraction, bonding, and structure during assembly. We combine depletion attractions that emerge from the incorporation of small polymer chains and electrostatic repulsions to induce the gelation of isotropic metal oxide nanocrystals. We develop a theoretical model to assess our experimental fluid-to-gel-phase progression observations. By preventing nanocrystal fusion during network assembly, we achieve gels with a strong near-infrared absorption, reminiscent of the inherent near-infrared localized surface plasmon resonance of the nanocrystal building blocks.

Authors:
 [1];  [2];  [1];  [1];  [1]; ORCiD logo [3]; ORCiD logo [1]
  1. McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712,
  2. McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712,, Department of Materials Science and Engineering, University of California, Berkeley, CA 94720,
  3. McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712,, Department of Physics, The University of Texas at Austin, Austin, TX 78712
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1465254
Grant/Contract Number:  
AC02CH11231
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: 115 Journal Issue: 36; Journal ID: ISSN 0027-8424
Publisher:
Proceedings of the National Academy of Sciences
Country of Publication:
United States
Language:
English

Citation Formats

Saez Cabezas, Camila A., Ong, Gary K., Jadrich, Ryan B., Lindquist, Beth A., Agrawal, Ankit, Truskett, Thomas M., and Milliron, Delia J. Gelation of plasmonic metal oxide nanocrystals by polymer-induced depletion attractions. United States: N. p., 2018. Web. doi:10.1073/pnas.1806927115.
Saez Cabezas, Camila A., Ong, Gary K., Jadrich, Ryan B., Lindquist, Beth A., Agrawal, Ankit, Truskett, Thomas M., & Milliron, Delia J. Gelation of plasmonic metal oxide nanocrystals by polymer-induced depletion attractions. United States. https://doi.org/10.1073/pnas.1806927115
Saez Cabezas, Camila A., Ong, Gary K., Jadrich, Ryan B., Lindquist, Beth A., Agrawal, Ankit, Truskett, Thomas M., and Milliron, Delia J. Mon . "Gelation of plasmonic metal oxide nanocrystals by polymer-induced depletion attractions". United States. https://doi.org/10.1073/pnas.1806927115.
@article{osti_1465254,
title = {Gelation of plasmonic metal oxide nanocrystals by polymer-induced depletion attractions},
author = {Saez Cabezas, Camila A. and Ong, Gary K. and Jadrich, Ryan B. and Lindquist, Beth A. and Agrawal, Ankit and Truskett, Thomas M. and Milliron, Delia J.},
abstractNote = {Significance Self-supported gelation of optically active nanocrystals offers a modular pathway to harness optoelectronic functionality in multiscale materials by directly controlling volume fraction, bonding, and structure during assembly. We combine depletion attractions that emerge from the incorporation of small polymer chains and electrostatic repulsions to induce the gelation of isotropic metal oxide nanocrystals. We develop a theoretical model to assess our experimental fluid-to-gel-phase progression observations. By preventing nanocrystal fusion during network assembly, we achieve gels with a strong near-infrared absorption, reminiscent of the inherent near-infrared localized surface plasmon resonance of the nanocrystal building blocks.},
doi = {10.1073/pnas.1806927115},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 36,
volume = 115,
place = {United States},
year = {Mon Aug 20 00:00:00 EDT 2018},
month = {Mon Aug 20 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1073/pnas.1806927115

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Cited by: 31 works
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