Chiral plasmonics of self-assembled nanorod dimers

Chiral plasmonics of self-assembled nanorod dimers

Chiral nanoscale photonic systems typically follow either tetrahedral or helical geometries that require four or more different constituent nanoparticles. Smaller number of particles and different chiral geometries taking advantage of the self-organization capabilities of nanomaterials will advance...

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Main Authors: Ma, Wei, Kuang, Hua, Wang, Libing, Xu, Liguang, Chang, Wei-Shun, Zhang, Huanan, Sun, Maozhong, Zhu, Yinyue, Zhao, Yuan, Liu, Liqiang, Xu, Chuanlai, Link, Stephan, Kotov, Nicholas A.
Format: Online
Language:English
Published: Nature Publishing Group 2013
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3678134/
id pubmed-3678134
recordtype oai_dc
spelling pubmed-36781342013-06-11 Chiral plasmonics of self-assembled nanorod dimers Ma, Wei Kuang, Hua Wang, Libing Xu, Liguang Chang, Wei-Shun Zhang, Huanan Sun, Maozhong Zhu, Yinyue Zhao, Yuan Liu, Liqiang Xu, Chuanlai Link, Stephan Kotov, Nicholas A. Article Chiral nanoscale photonic systems typically follow either tetrahedral or helical geometries that require four or more different constituent nanoparticles. Smaller number of particles and different chiral geometries taking advantage of the self-organization capabilities of nanomaterials will advance understanding of chiral plasmonic effects, facilitate development of their theory, and stimulate practical applications of chiroplasmonics. Here we show that gold nanorods self-assemble into side-by-side orientated pairs and “ladders” in which chiral properties originate from the small dihedral angle between them. Spontaneous twisting of one nanorod versus the other one breaks the centrosymmetric nature of the parallel assemblies. Two possible enantiomeric conformations with positive and negative dihedral angles were obtained with different assembly triggers. The chiral nature of the angled nanorod pairs was confirmed by 4π full space simulations and the first example of single-particle CD spectroscopy. Self-assembled nanorod pairs and “ladders” enable the development of chiral metamaterials, (bio)sensors, and new catalytic processes. Nature Publishing Group 2013-06-11 /pmc/articles/PMC3678134/ /pubmed/23752317 http://dx.doi.org/10.1038/srep01934 Text en Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
repository_type Open Access Journal
institution_category Foreign Institution
institution US National Center for Biotechnology Information
building NCBI PubMed
collection Online Access
language English
format Online
author Ma, Wei
Kuang, Hua
Wang, Libing
Xu, Liguang
Chang, Wei-Shun
Zhang, Huanan
Sun, Maozhong
Zhu, Yinyue
Zhao, Yuan
Liu, Liqiang
Xu, Chuanlai
Link, Stephan
Kotov, Nicholas A.
spellingShingle Ma, Wei
Kuang, Hua
Wang, Libing
Xu, Liguang
Chang, Wei-Shun
Zhang, Huanan
Sun, Maozhong
Zhu, Yinyue
Zhao, Yuan
Liu, Liqiang
Xu, Chuanlai
Link, Stephan
Kotov, Nicholas A.
Chiral plasmonics of self-assembled nanorod dimers
author_facet Ma, Wei
Kuang, Hua
Wang, Libing
Xu, Liguang
Chang, Wei-Shun
Zhang, Huanan
Sun, Maozhong
Zhu, Yinyue
Zhao, Yuan
Liu, Liqiang
Xu, Chuanlai
Link, Stephan
Kotov, Nicholas A.
author_sort Ma, Wei
title Chiral plasmonics of self-assembled nanorod dimers
title_short Chiral plasmonics of self-assembled nanorod dimers
title_full Chiral plasmonics of self-assembled nanorod dimers
title_fullStr Chiral plasmonics of self-assembled nanorod dimers
title_full_unstemmed Chiral plasmonics of self-assembled nanorod dimers
title_sort chiral plasmonics of self-assembled nanorod dimers
description Chiral nanoscale photonic systems typically follow either tetrahedral or helical geometries that require four or more different constituent nanoparticles. Smaller number of particles and different chiral geometries taking advantage of the self-organization capabilities of nanomaterials will advance understanding of chiral plasmonic effects, facilitate development of their theory, and stimulate practical applications of chiroplasmonics. Here we show that gold nanorods self-assemble into side-by-side orientated pairs and “ladders” in which chiral properties originate from the small dihedral angle between them. Spontaneous twisting of one nanorod versus the other one breaks the centrosymmetric nature of the parallel assemblies. Two possible enantiomeric conformations with positive and negative dihedral angles were obtained with different assembly triggers. The chiral nature of the angled nanorod pairs was confirmed by 4π full space simulations and the first example of single-particle CD spectroscopy. Self-assembled nanorod pairs and “ladders” enable the development of chiral metamaterials, (bio)sensors, and new catalytic processes.
publisher Nature Publishing Group
publishDate 2013
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3678134/
_version_ 1611985142463594496

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