Publication
Title
Separation of specific single enantiomer single-wall carbon nanotubes in the large diameter regime
Author
Abstract
Enantiomer level isolation of single-wall carbon nanotubes (SWCNTs) in high concentration and purity for nanotubes greater than 1.1 nm in diameter is demonstrated using a two-stage aqueous two-phase extraction (ATPE) technique. In total 5 different nanotube species of ≈ 1.41 nm diameter are isolated, including both metallics and semiconductors. We characterize these populations by absorbance spectroscopy, circular dichroism spectroscopy, resonance Raman spectroscopy and photoluminescence mapping, revealing and substantiating mod-dependent optical dependencies. Using knowledge of the competitive adsorption of surfactants to the SWCNTs that controls partitioning within the ATPE separation we describe an advanced acid addition methodology that enables the fine control of the separation for these select nanotubes. Furthermore, we show that endohedral filling is a previously unrecognized but important factor to ensure a homogenous starting-material and further enhance separation yield, with best results for alkane-filled SWCNTs, followed by empty SWCNTs with the intrinsic inhomogeneity of water-filled SWCNTs causing them to be worst for separations. Lastly, we demonstrate the potential use of these nanotubes in field-effect transistors.
Language
English
Source (journal)
ACS nano. - -
Publication
2020
ISSN
1936-0851
DOI
10.1021/ACSNANO.9B08244
Volume/pages
14 :1 (2020) , p. 948-963
ISI
000510531500084
Pubmed ID
31742998
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Project info
Order in one dimension: Functional hybrids of chiralitysorted carbon nanotubes (ORDERin1D).
Separation and high-resolution spectroscopic characterisation of carbon nanotubes and nanocomposites.
Nonlinear Optics of Bistable Molecules and One-Dimensional Arrays.
Functional Carbon Nanotube Nanohybrids: from Synthesis to Advanced Spectroscopic Characterization
Carbon nanomaterial enhanced optical fibres for biomedical imaging and sensing (CHARMING).
Functional Hybrids of Carbon Nanotubes
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identifier
Creation 29.11.2019
Last edited 02.10.2024
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