The Effects of Temperature on the Assembly of Gold Nanoparticle by Interpolymer Complexation

Kim, Hyeong Jin; Wang, Wenjie; Mallapragada, Surya K.; Vaknin, David

doi:10.1021/acs.jpclett.0c03749

Title: The Effects of Temperature on the Assembly of Gold Nanoparticle by Interpolymer Complexation

Abstract

Using synchrotron-based small-angle X-ray scattering techniques, we demonstrate that poly(ethylene glycol)-functionalized gold nanoparticles (PEG-AuNPs) are assembled into close-packed structures that include short-range order with face-centered cubic structure, where crystalline qualities are varied by controlling the electrolyte concentration, pH, and temperature of the suspensions. Here, we show that interpolymer complexation with poly(acrylic acid) (PAA) is induced by lowering the pH level of the PEG-AuNPs suspensions, and furthermore, increasing the temperature of the suspension strengthens interparticle attraction, leading to improved supercrystal structures. Our results indicate that this strategy creates robust nanoparticle superlattices with high thermal stability. The effects of PAA and PEG chain lengths on the assemblies are also investigated, and their optimal conditions for creating improved superlattices are discussed.

Authors:

^[1];

^[2];

^[1];

^[1]

Ames Lab., and Iowa State Univ., Ames, IA (United States)
Ames Lab., Ames, IA (United States)

Publication Date:: Tue Feb 02 00:00:00 EST 2021

Research Org.:: Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1771105

Report Number(s):: IS-J-10,438
Journal ID: ISSN 1948-7185

Grant/Contract Number:: AC02-07CH11358; AC02-06CH11357

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Physical Chemistry Letters

Additional Journal Information:: Journal Volume: 12; Journal Issue: 5; Journal ID: ISSN 1948-7185

Publisher:: American Chemical Society

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Metal nanoparticles; Nanoparticles; Lattices; X-ray scattering; Suspensions

Citation Formats


                    Kim, Hyeong Jin, Wang, Wenjie, Mallapragada, Surya K., and Vaknin, David. The Effects of Temperature on the Assembly of Gold Nanoparticle by Interpolymer Complexation.  United States: N. p., 2021. 
Web.  doi:10.1021/acs.jpclett.0c03749.

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                    Kim, Hyeong Jin, Wang, Wenjie, Mallapragada, Surya K., & Vaknin, David. The Effects of Temperature on the Assembly of Gold Nanoparticle by Interpolymer Complexation.  United States.  https://doi.org/10.1021/acs.jpclett.0c03749

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                    Kim, Hyeong Jin, Wang, Wenjie, Mallapragada, Surya K., and Vaknin, David. Tue .  
"The Effects of Temperature on the Assembly of Gold Nanoparticle by Interpolymer Complexation".  United States.  https://doi.org/10.1021/acs.jpclett.0c03749.  https://www.osti.gov/servlets/purl/1771105.

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@article{osti_1771105,

  title        = {The Effects of Temperature on the Assembly of Gold Nanoparticle by Interpolymer Complexation},

  author       = {Kim, Hyeong Jin and Wang, Wenjie and Mallapragada, Surya K. and Vaknin, David},

  abstractNote = {Using synchrotron-based small-angle X-ray scattering techniques, we demonstrate that poly(ethylene glycol)-functionalized gold nanoparticles (PEG-AuNPs) are assembled into close-packed structures that include short-range order with face-centered cubic structure, where crystalline qualities are varied by controlling the electrolyte concentration, pH, and temperature of the suspensions. Here, we show that interpolymer complexation with poly(acrylic acid) (PAA) is induced by lowering the pH level of the PEG-AuNPs suspensions, and furthermore, increasing the temperature of the suspension strengthens interparticle attraction, leading to improved supercrystal structures. Our results indicate that this strategy creates robust nanoparticle superlattices with high thermal stability. The effects of PAA and PEG chain lengths on the assemblies are also investigated, and their optimal conditions for creating improved superlattices are discussed.},

  doi          = {10.1021/acs.jpclett.0c03749},

  journal      = {Journal of Physical Chemistry Letters},

  number       = 5,

  volume       = 12,

  place        = {United States},

  year         = {Tue Feb 02 00:00:00 EST 2021},

  month        = {Tue Feb 02 00:00:00 EST 2021}

}

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Title: The Effects of Temperature on the Assembly of Gold Nanoparticle by Interpolymer Complexation

Abstract

Citation Formats

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