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639230 Aldrich

Carbon nanotube, single-walled, polyaminobenzene sulfonic acid functionalized

75-85% carbon basis, D × L 1.1 nm × 0.5-1.0 μm , bundle dimensions

Synonym: Carbon nanotube, single-walled, PABS functionalized, SWNT, PABS functionalized



Related Categories 3D Printing Materials for Research and Development, Carbon Nanomaterials, Carbon Nanotubes, Materials Science, Nanomaterials,
assay   75-85% carbon basis
form   powder
mol wt   average Mw 400-600 g/mol (PABS)
extent of labeling   65% (PABS, typical)
D × L   1.1 nm × 0.5-1.0 μm , bundle dimensions
impurities   4% metals
solubility   ethanol: 0.05 mg/mL
  DMF: 0.1 mg/mL
  H2O: 5.0 mg/mL (As determined by near-IR absorbance spectroscopy.)
functional group   Sulfonic acid


Analysis Note

Carbonaceous content

General description

Average diameter of individual SWCNT = 1.4nm ± 0.1nm

Single-walled carbon nanotube (SWNT) functionalized with a water soluble, conducting polymer (polyaminobenzene sulfonic acid, PABS) covalently bonded directly to the nanotube. Solubilities determined by NIR absorbance.


100 mg in glass insert

Packaged in glass bottles

Preparation Note

Electric Arc Discharge Method


Method for dispersing in water: In solid form SWNTs are highly entangled and associated in macroscopic particles. It requires significant effort to break such an association and bring the material in solution. Sonicate 50 mg of material in 2 ml water for 30 min. Add 8 ml of water and sonicate for additional 90 min. Typically, after this procedure all material is completely dispersed according to visual observation. For quantitative measurement of the solubility, allow the dispersion to stand overnight at room temperature. Because of the high optical density of concentrated dispersion, dilute an aliquot from the upper layer of the studied dispersion by a factor of 100. The concentration of the diluted solution is estimated from the recorded NIR spectra using a plot of the absorbance at 9750 cm-1 compared to the concentration of a standard solution (see reference).

Safety & Documentation

Safety Information

GHS07  GHS07
Signal word 
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Protocols & Articles


3D Printable Conductive Nanocomposites of PLA and Multi-walled Carbon Nanotubes

Vincent Hughes, Ilyass Tabiai, Kambiz Chizari, Daniel Therriault* Laboratory for Multiscale Mechanics (LM2) École Polytechnique Montréal, QC H3T1J4, Canada *Email: daniel.therriault@polymtl.ca
Vincent Hughes, Ilyass Tabiai, Kambiz Chizari, Daniel Therriault*
Material Matters, 2016, 11.2
Keywords: Degradations, Deposition, Electronics, Evaporation, Nanomaterials, Nanotubes, Optical microscopy

3D Printing of Carbon Fiber-Reinforced Composites

3D printing is a type of additive manufacturing that can be used to rapidly fabricate components with highly customizable geometries, most typically using a layer-by-layer fabrication process. 3D pri...
Zhenyu Bo* (Ph.D Candidate at Northwestern University) and Jia Choi*, PhD, Product Manager

*Materials Science Product Management Team, MilliporeSigma, Milwaukee, WI.
Keywords: Deposition, Nanomaterials, Nanotubes

Polymer-Sorted Semiconducting Carbon Nanotubes for Transistors and Solar Cells

Matthew J. Shea,1 Gerald J. Brady,1 Juan Zhao,1,2 Meng-Yin Wu,3 Harold T. Evensen,3 Michael S. Arnold1* 1Department of Materials Science and Engineering, University of Wisconsin-Madison, USA 2School ...
Keywords: Absorption, Chemical vapor deposition, Chromatography, Column chromatography, Deposition, Diffusion, Materials Science, Microscopy, Nanotubes, Renewable energy, Scanning electron microscopy, Semiconductor, Separation, Solar cells

Single Walled Carbon Nanotubes

Richard Jansen and Philip Wallis* SouthWest NanoTechnologies, Inc. 2501 Technology Place Norman, OK 73071 *Email: pwallis@swentnano.com
Keywords: Absorption, Catalysis, Centrifugation, Chemical vapor deposition, Diffraction, Indicators, Infrared spectroscopy, Nanotubes, Oxidations, Purification, Raman spectroscopy, Semiconductor, Solar cells, Sonication, Spectroscopy, Ultraviolet-Visible spectroscopy, X-Ray diffraction

Sorting Carbon Nanotubes and Their Biological Applications

Hyunkyu Oh and Sang-Yong Ju* Department of Chemistry, Yonsei University Seoul 120-749, Korea *Correspondence Email: syju@yonsei.ac.kr
Keywords: Absorption, Adsorption, Asymmetric synthesis, Cancer, Carboxylations, Chromatography, Electrophoresis, Filtration, Inflammation, Infrared spectroscopy, Ion Exchange, Ion exchange resins, Ligands, Materials Science, Nanomaterials, Nanotubes, Oxidations, Semiconductor, Separation, Titrations

Peer-Reviewed Papers


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