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Title: One-Dimensional Anomalous Diffusion of Gold Nanoparticles in a Polymer Melt

Abstract

We investigated the dynamics of polymer-grafted gold nanoparticles loaded into polymer melts using x-ray photon correlation spectroscopy. For low molecular weight host matrix polymer chains, normal isotropic diffusion of the gold nanoparticles is observed. For larger molecular weights, anomalous diffusion of the nanoparticles is observed that can be described by ballistic motion and generalized Levy walks, similar to those often used to discuss the dynamics of jammed systems. Under certain annealing conditions, the diffusion is one-dimensional and related to the direction of heat flow during annealing and is associated with an dynamic alignment of the host polymer chains. Molecular dynamics simulations of a single gold nanoparticle diffusing in a partially aligned polymer network semiquantitatively reproduce the experimental results to a remarkable degree. Here, the results help to showcase how nanoparticles can under certain circumstances move rapidly in polymer networks.

Authors:
 [1];  [1];  [2];  [2];  [1];  [3];  [1];  [1];  [4];  [2];  [2];  [1];  [4];  [1]
  1. Univ. of California San Diego, La Jolla, CA (United States)
  2. Univ. of Massachusetts, Amherst, MA (United States)
  3. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
  4. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1542155
Alternate Identifier(s):
OSTI ID: 1500136
Grant/Contract Number:  
AC02-06CH11357; SC0018086
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 122; Journal Issue: 10; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English

Citation Formats

Song, Jing -Jin, Bhattacharya, Rupak, Kim, Hyunki, Chang, Jooyoung, Tang, Tsung -Yeh, Guo, Hongyu, Ghosh, Sajal K., Yang, Yi, Jiang, Zhang, Kim, Hyeyoung, Russell, Thomas P., Arya, Gaurav, Narayanan, Suresh, and Sinha, Sunil K. One-Dimensional Anomalous Diffusion of Gold Nanoparticles in a Polymer Melt. United States: N. p., 2019. Web. doi:10.1103/PhysRevLett.122.107802.
Song, Jing -Jin, Bhattacharya, Rupak, Kim, Hyunki, Chang, Jooyoung, Tang, Tsung -Yeh, Guo, Hongyu, Ghosh, Sajal K., Yang, Yi, Jiang, Zhang, Kim, Hyeyoung, Russell, Thomas P., Arya, Gaurav, Narayanan, Suresh, & Sinha, Sunil K. One-Dimensional Anomalous Diffusion of Gold Nanoparticles in a Polymer Melt. United States. doi:10.1103/PhysRevLett.122.107802.
Song, Jing -Jin, Bhattacharya, Rupak, Kim, Hyunki, Chang, Jooyoung, Tang, Tsung -Yeh, Guo, Hongyu, Ghosh, Sajal K., Yang, Yi, Jiang, Zhang, Kim, Hyeyoung, Russell, Thomas P., Arya, Gaurav, Narayanan, Suresh, and Sinha, Sunil K. Fri . "One-Dimensional Anomalous Diffusion of Gold Nanoparticles in a Polymer Melt". United States. doi:10.1103/PhysRevLett.122.107802.
@article{osti_1542155,
title = {One-Dimensional Anomalous Diffusion of Gold Nanoparticles in a Polymer Melt},
author = {Song, Jing -Jin and Bhattacharya, Rupak and Kim, Hyunki and Chang, Jooyoung and Tang, Tsung -Yeh and Guo, Hongyu and Ghosh, Sajal K. and Yang, Yi and Jiang, Zhang and Kim, Hyeyoung and Russell, Thomas P. and Arya, Gaurav and Narayanan, Suresh and Sinha, Sunil K.},
abstractNote = {We investigated the dynamics of polymer-grafted gold nanoparticles loaded into polymer melts using x-ray photon correlation spectroscopy. For low molecular weight host matrix polymer chains, normal isotropic diffusion of the gold nanoparticles is observed. For larger molecular weights, anomalous diffusion of the nanoparticles is observed that can be described by ballistic motion and generalized Levy walks, similar to those often used to discuss the dynamics of jammed systems. Under certain annealing conditions, the diffusion is one-dimensional and related to the direction of heat flow during annealing and is associated with an dynamic alignment of the host polymer chains. Molecular dynamics simulations of a single gold nanoparticle diffusing in a partially aligned polymer network semiquantitatively reproduce the experimental results to a remarkable degree. Here, the results help to showcase how nanoparticles can under certain circumstances move rapidly in polymer networks.},
doi = {10.1103/PhysRevLett.122.107802},
journal = {Physical Review Letters},
number = 10,
volume = 122,
place = {United States},
year = {2019},
month = {3}
}

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Works referenced in this record:

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