Selective extraction of semiconducting single-walled carbon nanotubes with a thermoresponsive polymer

2018 ◽  
Vol 54 (24) ◽  
pp. 3026-3029 ◽  
Author(s):  
Eriko Shimura ◽  
Toshiki Sugai ◽  
Shota Kuwahara
Keyword(s):  
Phase Transition ◽  
Carbon Nanotubes ◽  
Electronic Properties ◽  
Single Walled Carbon Nanotubes ◽  
Selective Extraction ◽  
Thermoresponsive Polymer ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

The extraction of single-walled carbon nanotubes by exploiting the phase transition of poly(N-isopropylacrylamide) was performed to obtain homogenous electronic properties.

Effects of the Molecular Weight of PCz on Selective Extraction of Large-Diameter Semiconducting Single-Walled Carbon Nanotubes

2021 ◽  
Vol 69 ◽  
pp. 11-21
Author(s):  
Ping Zhang ◽  
Wen Hui Yi ◽  
Bai Lei ◽  
Jin Feng Zhou ◽  
Yi Long Tian ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Molecular Weight ◽  
Arc Discharge ◽  
Large Diameter ◽  
Single Walled Carbon Nanotubes ◽  
Selective Extraction ◽  
High Yield ◽  
Extraction Technology ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Due to the difficulty in the selective synthesis of semiconductor (s-) and metal (m-) single-walled carbon nanotubes (SWCNTs), we still need to explore the selective extraction technology of s-SWCNTs. Using Poly[9-(1-octylonoyl)-9H-carbazole-2,7-diyl] (PCz) extraction of s-SWCNTs has attracted extensive attention in recent years, because it can selective extraction of large-diameter s-SWCNTs with high purity. However, influence of the molecular weight of this polymer on the s-SWCNTs selective extraction properties remains unclear. In this study, we used PCz with different average molecular weights to study the ability of selective extraction s-SWCNTs from pristine arc discharge carbon nanotubes. Spectra studies indicate that compared to the PCz with lower molecular weight, the PCz with higher molecular weight has better selective extraction ability, and can help to obtain s-SWCNTs with higher purity (>99%) and high yield. FETs devices have been prepared by s-SWCNTs obtained via PCz with higher molecular weight exhibit higher on/off ratio, lower off current and lower subthreshold swing. This work offers a reference of the design and synthesis of PCz polymer that performs sufficient selective ability in extracting s-SWCNTs with promising applications.

scholarly journals Role of constituents for the chirality isolation of single-walled carbon nanotubes by the reversible phase transition of a thermoresponsive polymer

RSC Advances ◽  
2020 ◽  
Vol 10 (41) ◽  
pp. 24570-24576
Author(s):  
Eriko Shimura ◽  
Tomomi Tanaka ◽  
Yuki Kuwahara ◽  
Takeshi Saito ◽  
Toshiki Sugai ◽  
...  
Keyword(s):  
Phase Transition ◽  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Sodium Borate ◽  
Thermoresponsive Polymer ◽  
Experimental Conditions ◽  
Reversible Phase Transition ◽  
Walled Carbon Nanotubes ◽  
Reversible Phase

Optimized experimental conditions in the presence of sodium borate achieved the selective release of (6,4) nanotubes into the liquid phase.

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