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652490 Sigma-Aldrich

Carbon nanotube, single-walled, carboxylic acid functionalized

>90% carbon basis, D × L 4-5 nm × 0.5-1.5 μm , bundle dimensions

Synonym: SWNT, carboxylic acid functionalized

  •  NACRES NA.23



Related Categories 3D Printing Materials for Research and Development, Carbon Nanomaterials, Carbon Nanotubes, Materials Science, Nanomaterials,
Quality Level   100
assay   >90% carbon basis
form   powder
extent of labeling   1.0-3.0 atom% carboxylic acid
D × L   4-5 nm × 0.5-1.5 μm , bundle dimensions
impurities   5-8% metals
solubility   H2O: dispersible 0.1 mg/mL
  DMF: dispersible 1.0 mg/mL
functional group   carboxyl


General description

Single walled nanotubes were prepared by the electric arc discharge method. The SWNTs were functionalized by purifying them in nitric acid. The carboxylic acid (-COOH) functionality along the length of the nanotube can be derivatized with a variety of functional groups. The average diameter of the nanotubes is 1.4nm ± 0.1nm. Transport properties of the SWNTs in soil was studied.


Carboxylated SWNTs were used to modify an indium tin oxide (ITO) electrode towards the fabrication of a novel electrochemical immunosensor. Carboxylated SWNTs was further multifunctionalized and were used in studying the influence of attached chemical group on the sorption of pyrene conjugates of oligonucleotides. An electrochemical DNA biosensor was reportedly designed using functionalized SWNTs. It was used in the preparation of the chlorocarbonyl-functionalized SWNT. It was used to fabricate SWNTs/(Pb, Zn)-phosphate glass composite structure for the dual use as light sensor and photocurrent converter. Interaction of carboxylated SWNT with Caco-2 was investigated in detail.


1 g in glass bottle

250 mg in glass insert

Packaged in glass bottles

Physical properties

The type of carboxylic group is: -COOH.

Preparation Note

Electric Arc Discharge Method

Analysis Note

Carbonaceous content

Safety & Documentation

Safety Information

GHS07  GHS07
Signal word 
Hazard statements 
Precautionary statements 
Target organs 
Respiratory system
Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
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, Nanomaterials, Nanotubes, Oxidations, Semiconductor, Separation, Titrations

Synthesis and Applications of Graphene Nanoribbons Synthesized

1 Department of Chemistry, 2 Smalley-Curl Institute and The NanoCarbon Center, 3 Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street MS 222, Houston, Texas 77005, U...
Keywords: Building blocks, Capillary electrophoresis, Mass spectrometry, Materials Science, Nanotubes, Nucleic acid hybridization, Oxidations, Phase transitions, Polymerization reactions, Sequencing, Solvents

Peer-Reviewed Papers


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