Language selection

Government of Canada / Gouvernement du Canada

Search

The effect of molecular weight on the supramolecular interaction between a conjugated polymer and single-walled carbon nanotubes

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1039/c1py00023c
AuthorSearch for: ; Search for: 1; Search for:
Affiliation
  1. National Research Council of Canada. NRC Steacie Institute for Molecular Sciences
FormatText, Article
Subject9 ,9-dioctylfluorene; Absorption and fluorescence spectroscopy; Nanotube concentration; Polymer samples; Supramolecular interactions; Tetra-hydrofuran; Absorption spectroscopy; Chromatographic analysis; Complexation; Conjugated polymers; Fluorescence spectroscopy; Gel permeation chromatography; Magnetic resonance; Molecular weight; Nuclear magnetic resonance spectroscopy; Size exclusion chromatography; Single-walled carbon nanotubes (SWCN)
Abstract
The synthesis and fractionation of poly[2,7-(9,9-dioctylfluorene)-alt-2,5- (3-dodecylthiophene)] resulted in the isolation of eight different molecular weight (M w) samples ranging from M n of 5 to 85 kg mol -1. These individual polymer samples were fully characterized by Gel Permeation Chromatography, Nuclear Magnetic Resonance, as well as absorption and fluorescence spectroscopy. Each sample was separately mixed and ultrasonicated with single-walled carbon nanotubes (SWNTs) in tetrahydrofuran, and the nanotube concentration within the resulting solutions was measured. It was found that the solubility of the polymer-SWNT complexes strongly depends on the M w of the conjugated polymer, with a maximum concentration reached when M w ranged between 10 and 35 kg mol -1. Higher and lower M ws resulted in substantially reduced nanotube concentrations. © 2011 The Royal Society of Chemistry.
Publication date
In
  • Polymer Chemistry 2, no. 6 (2011): 1404–1408.
LanguageEnglish
Peer reviewedYes
NPARC number21271176
Export citationExport as RIS
Report a correctionReport a correction (opens in a new tab)
Record identifier6594ef28-b855-414f-acfd-ff582c661e00
Record created2014-03-24
Record modified2020-04-21
Date modified: