Sorting and decoration of semiconducting single-walled carbon nanotubes via the quaternization reaction

Photocatalysis-induced selective decoration of semiconducting single walled carbon nanotubes: hole-doping effect.

We have examined the time-dependent effect of the titanium oxide photocatalysis on N-methyl-2-pyrrolidone individually dispersed single walled carbon nanotube (SWNT) suspensions. From optical spectroscopic studies, we found a selective decoration of the semiconducting tubes. Such selectivity is attributed to the preferential attack of the photogenerated active species on the hole-doped semicond...

Sorting centimetre-long single-walled carbon nanotubes

While several approaches have been developed for sorting metallic (m) or semiconducting (s) single-walled carbon nanotubes (SWCNTs), the length of SWCNTs is limited within a micrometer, which restricts excellent electrical performances of SWCNTs for macro-scale applications. Here, we demonstrate a simple sorting method of centimetre-long aligned m- and s-SWCNTs. Ni particles were selectively an...

Designing large-plane conjugated copolymers for the high-yield sorting of semiconducting single-walled carbon nanotubes.

Semiconducting single-walled carbon nanotubes could be selectively dispersed with a novel fluorene-peri-xanthenoxanthene conjugated copolymer. The fabricated thin-film field effect transistors show excellent and uniform performances with on/off ratios of >10(7) and mobilities of 4-6.1 cm(2) V(-1) s(-1).

Controlled Decoration of Single-Walled Carbon Nanotubes with Pd Nanocubes

Femtosecond photon echo spectroscopy of semiconducting single-walled carbon nanotubes.

Three-pulse photon echo peak shift measurements were performed on semiconducting single-walled carbon nanotubes embedded in polymer matrix at room temperature. Simultaneous modeling of the peak shift data in the limit of zero-intensity and the linear absorption spectrum enable us to extract an intrinsic homogeneous line width of 178 cm(-1), an inhomogeneous width of 698 cm(-1), and a Huang-Rhys...