COSMOSIL® Index

COSMOSIL CNT

COSMOSIL CNT series are ideal for separation of soluble carbon nanotubes based on sizes. COSMOSIL CNT series are packed with hydrophilic group-bonded silica packing material. The columns are specially designed to avoid adsorption of carbon nanotubes to silica support and thus ensure high resolution and maximum recovery of carbon nanatubes. COSMOSIL CNT series are available in three different pore sizes, 300 A, 1000 A and 2000 A, respectively.

Features of COSMOSIL CNT

  • Size-based separation of soluble carbon nanotubes
  • Hydrophilic group coating silica packing material
  • Three types of pore sizes (300 A, 1000 A, 2000 A)
  • High durability

Image courtesy of Dr. Y. Ito, Univ. of Oxford

Size-based separation of carbon nanotubes

COSMOSIL CNT columns offered improved separation for DNA wrapped carbon nanotubes by connecting three columns with different pore sizes.

data1

Condition
Column COSMOSIL CNT-300 7.5 mm I.D. x 300 mm
COSMOSIL CNT-1000 7.5 mm I.D. x 300 mm
COSMOSIL CNT-2000 7.5 mm I.D. x 300 mm
Mobile phase 0.5 mmol/l EDTA, 200 mmol/l NaCl, 40 mmol/l Tris-Tris HCl(pH 7.0)
Flow rate 1.0 ml/min
Temperature 40 oC
Detection UV 260 nm (x 1), 350 nm (x 20)
Sample DNA-wrapped CNT (CNT-DNA)
Injection vol. 500 μl
Pressure 8.1 MPa

Sample courtesy of Prof. H. Shinohara, Department of Chemistry & Institute for Advanced Research, Nagoya University

AFM (Atomic Force Microscope) Analysis

The data below show analysis by AFM of CNT length of each fraction from the sample on the previous page.

data2

Data courtesy of Y. Asada and Prof. H. Shinohara, Department of Chemistry & Institute for Advanced Research, Nagoya University

Material characteristics

Packing material CNT-300 CNT-1000 CNT-2000
Silica gel high purity porous spherical silica
Average particle size 5 µm
Average pore size approx. 300 Å approx. 1000 Å approx. 2000 Å
Stationary phase hydrophilic group (neutral)
pH Range 2 - 7.5
Pressure 15 MPa and below

Ordering information

COSMOSIL CNT
Product name Size Product No.
COSMOSIL CNT-300 Guard Column 7.5 mm I.D. x 50 mm 09194-81
COSMOSIL CNT-300 Packed Column 7.5 mm I.D. x 300 mm 09195-71
COSMOSIL CNT-1000 Guard Column 7.5 mm I.D. x 50 mm 09196-61
COSMOSIL CNT-1000 Packed Column 7.5 mm I.D. x 300 mm 09197-51
COSMOSIL CNT-2000 Guard Column 7.5 mm I.D. x 50 mm 09198-41
COSMOSIL CNT-2000 Packed Column 7.5 mm I.D. x 300 mm 09199-31

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