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Carbon nanotube, single-walled

(6,5) chirality, ≥95% carbon basis (≥95% as carbon nanotubes), 0.78 nm average diameter

SWCNT, SWNT, CHASM, CNT, Signis SG65i, Single wall carbon nanotube
CAS Number:

Quality Level


G/D Ratio: ≥20 (Raman 633 nm)
Median length: 1 μm


≥95% carbon basis (≥95% as carbon nanotubes)


powder (freeze-dried)


Signis® SG65i


≤5 wt. % Moisture content

average diameter

0.78 nm

surface area

spec. surface area ≥700 m2/g


3652-3697 °C (lit.)


1.7-1.9 g/cm3 at 25 °C (lit.)

bulk density

0.1 g/cm3

SMILES string


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General description

Produced using CHASM′s patented CoMoCAT synthesis technology, Signis® SG65i is a single-wall carbon nanotube (CNT) product uniquely enriched in semiconducting tubes, with (6,5) chirality being most abundant. Approximately 95% of the CNTs in SG65i are semiconducting, with approximately 41% of those tubes being (6,5) chirality.


Suitable for use in printed semiconductors, photovoltaic devices, sensors, medical research, etc.


1 g in glass bottle
250 mg in glass bottle

Preparation Note

CoMoCAT Catalytic Chemical Vapor Deposition (CVD) Method

Legal Information

CHASM is a trademark of Chasm Advanced Materials
CoMoCAT is a trademark of Chasm Advanced Materials
Signis is a registered trademark of Chasm Advanced Materials

Storage Class Code

11 - Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Robert Nißler et al.
Nanoscale, 11(23), 11159-11166 (2019-06-01)
Single-walled carbon nanotubes (SWCNTs) have unique photophysical properties and serve as building blocks for biosensors, functional materials and devices. For many applications it is crucial to use chirality-pure SWCNTs, which requires sophisticated processes. Purification procedures such as wrapping by certain
Tsukasa Takeuchi et al.
Bioconjugate chemistry, 30(5), 1323-1330 (2019-03-09)
Single-walled carbon nanotubes (SWCNTs) show strong fluorescence in the 1000-1700 nm second near-infrared (NIR-II) wavelength range and are considered promising candidates for angiographic imaging probes. Oxygen-doped SWCNTs coated with phospholipid-polyethylene glycol (o-SWCNT-PEG) show exceptional potential, as they emit fluorescence at
Anton V Naumov et al.
Nano letters, 9(9), 3203-3208 (2009-07-31)
A new method was used to measure the fraction of semiconducting nanotubes in various as-grown or processed single-walled carbon nanotube (SWCNT) samples. SWCNT number densities were compared in images from near-IR photoluminescence (semiconducting species) and AFM (all species) to compute
Gabriele Selvaggio et al.
Nature communications, 11(1), 1495-1495 (2020-03-22)
Imaging of complex (biological) samples in the near-infrared (NIR) is beneficial due to reduced light scattering, absorption, phototoxicity, and autofluorescence. However, there are few NIR fluorescent materials known and suitable for biomedical applications. Here we exfoliate the layered pigment CaCuSi4O10
Yuhao Li et al.
Science advances, 6(38) (2020-09-18)
Carbon nanotube (CNT) pores, which mimic the structure of the aquaporin channels, support extremely high water transport rates that make them strong candidates for building artificial water channels and high-performance membranes. Here, we measure water and ion permeation through 0.8-nm-diameter


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