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Title: Diversifying Nanoparticle Assemblies in Supramolecule Nanocomposites Via Cylindrical Confinement

Abstract

Many macroscopic properties such as collective chiral responses enhanced by coupled plasmonic nanoparticles require complex nanostructures. However, a key challenge is to directly assemble nanosized building blocks into functional entities with designed morphologies. For example, the DNA templated nanoparticle assembly has low scalability and requires aqueous conditions, while other approaches such as controlled drying and polymer templating access only simple 1-D, 2-D, and 3-D structures with limited assembly patterns. In this paper, we demonstrate a new self-assembly strategy that expands the diversity of 3-D nanoparticle assemblies. By subjecting supramolecular nanocomposites to cylindrical confinement, a range of new nanoparticle assemblies such as stacked rings and single and double helices can be readily obtained with a precisely defined morphology. Circular dichroism dark field scattering measurements on the single nanowire with Au helical ribbon-like assembly show chiral plasmonic response several orders of magnitude higher than that of natural chiral materials. The phase behavior of supramolecular nanocomposite under geometric constraints is quite different from that of block copolymer. Finally, it depends on the complex interplay among nanoparticle packing and phase behavior of parent block copolymers under confinement and can be governed by nanoparticle diffusion.

Authors:
 [1];  [2];  [3];  [1];  [1]; ORCiD logo [3];  [4]; ORCiD logo [5]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering
  2. Univ. of California, Berkeley, CA (United States). Dept. of Mechanical Engineering
  3. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
  4. Univ. of California, Berkeley, CA (United States). Dept. of Mechanical Engineering; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
  5. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering. Dept. of Chemistry; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
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:
1461122
Grant/Contract Number:  
[AC02-05CH11231]
Resource Type:
Accepted Manuscript
Journal Name:
Nano Letters
Additional Journal Information:
[ Journal Volume: 17; Journal Issue: 11]; Journal ID: ISSN 1530-6984
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; cylindrical confinement; helical nanoparticle ribbon; infrared chirality; supramolecular nanocomposite

Citation Formats

Bai, Peter, Yang, Sui, Bao, Wei, Kao, Joseph, Thorkelsson, Kari, Salmeron, Miquel, Zhang, Xiang, and Xu, Ting. Diversifying Nanoparticle Assemblies in Supramolecule Nanocomposites Via Cylindrical Confinement. United States: N. p., 2017. Web. doi:10.1021/acs.nanolett.7b03131.
Bai, Peter, Yang, Sui, Bao, Wei, Kao, Joseph, Thorkelsson, Kari, Salmeron, Miquel, Zhang, Xiang, & Xu, Ting. Diversifying Nanoparticle Assemblies in Supramolecule Nanocomposites Via Cylindrical Confinement. United States. doi:10.1021/acs.nanolett.7b03131.
Bai, Peter, Yang, Sui, Bao, Wei, Kao, Joseph, Thorkelsson, Kari, Salmeron, Miquel, Zhang, Xiang, and Xu, Ting. Mon . "Diversifying Nanoparticle Assemblies in Supramolecule Nanocomposites Via Cylindrical Confinement". United States. doi:10.1021/acs.nanolett.7b03131. https://www.osti.gov/servlets/purl/1461122.
@article{osti_1461122,
title = {Diversifying Nanoparticle Assemblies in Supramolecule Nanocomposites Via Cylindrical Confinement},
author = {Bai, Peter and Yang, Sui and Bao, Wei and Kao, Joseph and Thorkelsson, Kari and Salmeron, Miquel and Zhang, Xiang and Xu, Ting},
abstractNote = {Many macroscopic properties such as collective chiral responses enhanced by coupled plasmonic nanoparticles require complex nanostructures. However, a key challenge is to directly assemble nanosized building blocks into functional entities with designed morphologies. For example, the DNA templated nanoparticle assembly has low scalability and requires aqueous conditions, while other approaches such as controlled drying and polymer templating access only simple 1-D, 2-D, and 3-D structures with limited assembly patterns. In this paper, we demonstrate a new self-assembly strategy that expands the diversity of 3-D nanoparticle assemblies. By subjecting supramolecular nanocomposites to cylindrical confinement, a range of new nanoparticle assemblies such as stacked rings and single and double helices can be readily obtained with a precisely defined morphology. Circular dichroism dark field scattering measurements on the single nanowire with Au helical ribbon-like assembly show chiral plasmonic response several orders of magnitude higher than that of natural chiral materials. The phase behavior of supramolecular nanocomposite under geometric constraints is quite different from that of block copolymer. Finally, it depends on the complex interplay among nanoparticle packing and phase behavior of parent block copolymers under confinement and can be governed by nanoparticle diffusion.},
doi = {10.1021/acs.nanolett.7b03131},
journal = {Nano Letters},
number = [11],
volume = [17],
place = {United States},
year = {2017},
month = {10}
}

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