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Title: Structural diversity in binary superlattices self-assembled from polymer-grafted nanocrystals

Abstract

Multicomponent nanocrystal superlattices represent an interesting class of material that derives emergent properties from mesoscale structure, yet their programmability can be limited by the alkyl-chain-based ligands decorating the surfaces of the constituent nanocrystals. Polymeric ligands offer distinct advantages, as they allow for more precise tuning of the effective size and ‘interaction softness’ through changes to the polymer’s molecular weight, chemical nature, architecture, persistence length and surrounding solvent. Here we show the formation of 10 different binary nanocrystal superlattices (BNSLs) with both two- and three-dimensional order through independent adjustment of the core size of spherical nanocrystals and the molecular weight of densely grafted polystyrene ligands. These polymer-brush-based ligands introduce new energetic contributions to the interparticle potential that stabilizes various BNSL phases across a range of length scales and interparticle spacings. In conclusion, our study opens the door for nanocrystals to become modular elements in the design of functional particle brush solids with controlled nanoscale interfaces and mesostructures.

Authors:
 [1];  [2]; ORCiD logo [3];  [4];  [3];  [1];  [1];  [3];  [4];  [5]
  1. Univ. of California, Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  5. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Kavli Energy NanoScience Institute, Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1255541
Alternate Identifier(s):
OSTI ID: 1378674
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats

Ye, Xingchen, Zhu, Chenhui, Ercius, Peter, Raja, Shilpa N., He, Bo, Jones, Matthew R., Hauwiller, Matthew R., Liu, Yi, Xu, Ting, and Alivisatos, A. Paul. Structural diversity in binary superlattices self-assembled from polymer-grafted nanocrystals. United States: N. p., 2015. Web. doi:10.1038/ncomms10052.
Ye, Xingchen, Zhu, Chenhui, Ercius, Peter, Raja, Shilpa N., He, Bo, Jones, Matthew R., Hauwiller, Matthew R., Liu, Yi, Xu, Ting, & Alivisatos, A. Paul. Structural diversity in binary superlattices self-assembled from polymer-grafted nanocrystals. United States. doi:10.1038/ncomms10052.
Ye, Xingchen, Zhu, Chenhui, Ercius, Peter, Raja, Shilpa N., He, Bo, Jones, Matthew R., Hauwiller, Matthew R., Liu, Yi, Xu, Ting, and Alivisatos, A. Paul. Wed . "Structural diversity in binary superlattices self-assembled from polymer-grafted nanocrystals". United States. doi:10.1038/ncomms10052. https://www.osti.gov/servlets/purl/1255541.
@article{osti_1255541,
title = {Structural diversity in binary superlattices self-assembled from polymer-grafted nanocrystals},
author = {Ye, Xingchen and Zhu, Chenhui and Ercius, Peter and Raja, Shilpa N. and He, Bo and Jones, Matthew R. and Hauwiller, Matthew R. and Liu, Yi and Xu, Ting and Alivisatos, A. Paul},
abstractNote = {Multicomponent nanocrystal superlattices represent an interesting class of material that derives emergent properties from mesoscale structure, yet their programmability can be limited by the alkyl-chain-based ligands decorating the surfaces of the constituent nanocrystals. Polymeric ligands offer distinct advantages, as they allow for more precise tuning of the effective size and ‘interaction softness’ through changes to the polymer’s molecular weight, chemical nature, architecture, persistence length and surrounding solvent. Here we show the formation of 10 different binary nanocrystal superlattices (BNSLs) with both two- and three-dimensional order through independent adjustment of the core size of spherical nanocrystals and the molecular weight of densely grafted polystyrene ligands. These polymer-brush-based ligands introduce new energetic contributions to the interparticle potential that stabilizes various BNSL phases across a range of length scales and interparticle spacings. In conclusion, our study opens the door for nanocrystals to become modular elements in the design of functional particle brush solids with controlled nanoscale interfaces and mesostructures.},
doi = {10.1038/ncomms10052},
journal = {Nature Communications},
number = ,
volume = 6,
place = {United States},
year = {2015},
month = {12}
}

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Works referenced in this record:

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