A method for producing a semiconducting SWCNT dispersion of the present invention comprises: a step A of preparing a to-be-separated SWCNT dispersion that includes a SWCNT mixture, an aqueous medium, and a polymer including a structural unit A derived from a monomer represented by Formula (1), and a step B of centrifuging the to-be-separated SWCNT dispersion and subsequently collecting a supernatant including the semiconducting SWCNT from the centrifuged to-be-separated SWCNT dispersion. The weight-average molecular weight of the polymer is 1,000 or more and 100,000 or less. ##STR00001##

A method for producing a semiconducting SWCNT dispersion of the present invention comprises: a step A of preparing a to-be-separated SWCNT dispersion that includes a SWCNT mixture, an aqueous medium, and a polymer including a structural unit A derived from a monomer represented by Formula (1), and a step B of centrifuging the to-be-separated SWCNT dispersion and subsequently collecting a supernatant including the semiconducting SWCNT from the centrifuged to-be-separated SWCNT dispersion. The weight-average molecular weight of the polymer is 1,000 or more and 100,000 or less. ##STR00001##

Methods for preparing a nanotube membrane for use in a pellicle membrane using dry printing are disclosed. Nanotube fibers are produced in a reaction vessel and dry sprayed onto a filter to form the nanotube membrane. The thickness of the nanotube membrane can be controlled by moving the reaction vessel and the filter relative to each other, or by further processing to reduce the thickness of the layer deposited onto the filter. This method reduces the number of process steps, reducing overall production time, and can also be used to produce larger membranes. The pellicle membrane can be formed with multiple layers and has a combination of high transmittance, low deflection, and small pore size. A conformal coating may applied to an outer surface of the pellicle membrane to protect the pellicle membrane from damage that can occur due to heat and hydrogen plasma created during EUV exposure.

The present invention relates to carbon nanostructure compositions such as single walled carbon nanotubes (SWCNT), and methods for purification thereof, such as separation by their electronic types (e.g., primarily semiconductor enrichment). The type separated, semiconducting SWCNTs, can be used in many downstream applications such as printed electronics, sensors, optoelectronics and solar energy conversion, among other applications.

The present invention relates to carbon nanostructure compositions such as single walled carbon nanotubes (SWCNT), and methods for purification thereof, such as separation by their electronic types (e.g., primarily semiconductor enrichment). The type separated, semiconducting SWCNTs, can be used in many downstream applications such as printed electronics, sensors, optoelectronics and solar energy conversion, among other applications.

A nanocarbon separation device includes a first porous structure configured to hold a solution containing a surfactant, a second porous structure configured to hold a dispersion medium, a holding part provided between the first porous structure and the second porous structure and configured to hold the dispersion liquid containing the nanocarbons and the surfactant and having a smaller content of the surfactant than that of the solution, a separation tank in which the first porous structure, the holding part and the second porous structure are disposed and accommodated in an order of the first porous structure, the holding part and the second porous structure, a first electrode provided on a lower section of the first porous structure, and a second electrode provided on an upper section of the second porous structure.

A nanocarbon separation device includes a first porous structure configured to hold a solution containing a surfactant, a second porous structure configured to hold a dispersion medium, a holding part provided between the first porous structure and the second porous structure and configured to hold the dispersion liquid containing the nanocarbons and the surfactant and having a smaller content of the surfactant than that of the solution, a separation tank in which the first porous structure, the holding part and the second porous structure are disposed and accommodated in an order of the first porous structure, the holding part and the second porous structure, a first electrode provided on a lower section of the first porous structure, and a second electrode provided on an upper section of the second porous structure.

In one aspect, provided is a method for producing a semiconducting single-walled carbon nanotube dispersion. This method allows semiconducting single-walled carbon nanotubes to be separated from a single-walled carbon nanotube mixture containing semiconducting single-walled carbon nanotubes and metallic single-walled carbon nanotubes in an aqueous medium, and yet requires only an easily available separation agent and a simple operation.

One aspect of the present disclosure relates to a method for producing a semiconducting single-walled carbon nanotube dispersion. The method includes (A) preparing a single-walled carbon nanotube dispersion to be separated that contains single-walled carbon nanotubes composed of semiconducting single-walled carbon nanotubes and metallic single-walled carbon nanotubes, an aqueous medium, and a copolymer containing a constitutional unit A derived from a monomer represented by the following formula (1) and a constitutional unit B derived from a monomer represented by the following formula (3), and (B) centrifuging the single-walled carbon nanotube dispersion to be separated and then collecting a supernatant containing the semiconducting single-walled carbon nanotubes from the centrifuged single-walled carbon nanotube dispersion.

CH.sub.2=CH−COOM  (1)

CH.sub.2=CR.sup.5−COO−(CH.sub.2CH.sub.2O).sub.q−H  (3)

In one aspect, provided is a method for producing a semiconducting single-walled carbon nanotube dispersion. This method allows semiconducting single-walled carbon nanotubes to be separated from a single-walled carbon nanotube mixture containing semiconducting single-walled carbon nanotubes and metallic single-walled carbon nanotubes in an aqueous medium, and yet requires only an easily available separation agent and a simple operation.

One aspect of the present disclosure relates to a method for producing a semiconducting single-walled carbon nanotube dispersion. The method includes (A) preparing a single-walled carbon nanotube dispersion to be separated that contains single-walled carbon nanotubes composed of semiconducting single-walled carbon nanotubes and metallic single-walled carbon nanotubes, an aqueous medium, and a copolymer containing a constitutional unit A derived from a monomer represented by the following formula (1) and a constitutional unit B derived from a monomer represented by the following formula (3), and (B) centrifuging the single-walled carbon nanotube dispersion to be separated and then collecting a supernatant containing the semiconducting single-walled carbon nanotubes from the centrifuged single-walled carbon nanotube dispersion.

CH.sub.2=CH−COOM  (1)

CH.sub.2=CR.sup.5−COO−(CH.sub.2CH.sub.2O).sub.q−H  (3)

In one aspect, provided is a method for producing a semiconducting single-walled carbon nanotube dispersion. This method allows semiconducting single-walled carbon nanotubes to be separated from a single-walled carbon nanotube mixture containing semiconducting single-walled carbon nanotubes and metallic single-walled carbon nanotubes in an aqueous medium, and yet requires only an easily available separation agent and a simple operation.

One aspect of the present disclosure relates to a method for producing a semiconducting single-walled carbon nanotube dispersion. The method includes (A) preparing a single-walled carbon nanotube dispersion to be separated that contains single-walled carbon nanotubes composed of semiconducting single-walled carbon nanotubes and metallic single-walled carbon nanotubes, an aqueous medium, and a nonionic polymer containing a constitutional unit A derived from a monomer represented by the following formula (1), and (B) centrifuging the single-walled carbon nanotube dispersion to be separated and then collecting a supernatant containing the semiconducting single-walled carbon nanotubes from the centrifuged single-walled carbon nanotube dispersion. A content of the constitutional unit A in all constitutional units of the polymer is 2 mol % or more. The polymer is water soluble.

CH.sub.2═CR.sup.1—COO—(EO).sub.p(PO).sub.q—R.sup.2   (1)